Frequently Asked Questions - Schneider Electric

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" landing-cards-prop="{"getGk":[{"Title":"What is the difference between the REFLEX mode and the POLARISED REFLEX mode on photo-electric sensors?","UrlName":"FA28055","LastModifiedDate":"02/03/2026","score":1.0037974683544304,"firstpublisheddate":"22/12/2010","answer":"

Note that we no longer sell these devices, this FAQ is for information only.

Both systems comprise a transmitter and receiver (usually within a single-body sensor), and a reflector. The transmitter sends a beam which is bounced back by the reflector and detected by the receiver. An object passing through the beam blocks the reflection and triggers the sensing signal.

REFLEX mode sensors may not be suitable for detecting reflective objects, as a shiny target may bounce the beam back to the sensor in the same way as the reflector. The sensor may not be able to tell the difference between the target and reflector and will therefore fail to detect the object. For maximum effectiveness the targets should be opaque or near opaque and should not be highly reflective in nature. However, the advantage of reflex mode sensors is that they give relatively long sensing distances.

POLARISED REFLEX mode sensors have polarising filters over both the transmitter and receiving sensor. The filters are at 90 deg to each other which means that the receiver cannot see the transmitted beam as it will be blocked by the receiver filter. The reflector turns the polarised light waves through 90 deg so that the receiver can see them. Light bouncing off other objects is not rotated so it will not trigger the sensor. This means that the polarised reflex can be used to detect very reflective surfaces, even mirrors, polished metal and semi transparent materials. However, the sensing distance is shorter than REFLEX.

"},{"Title":"How can I cable to the PNP and NPN type outputs for sensors / detectors, using the wiring diagram?","UrlName":"FA23633","LastModifiedDate":"02/07/2025","score":1.0012658227848101,"firstpublisheddate":"28/09/2010","answer":"

PNP and NPN type outputs are available as 3-wire sensors with a DC voltage power supply (the voltage limits are dependent on the specific sensor):

PNP type: switching on the positive voltage load

NPN type: switching on the negative voltage load

These outputs are typical of photoelectric detectors, inductive proximity and other types of sensors.

For a detailed explanation of PNP vs NPN, see the following FAQ: FA142566

PNP output

The load (relay coil, contactor relay input, PLC input) must be connected between the "-" negative terminal and the midpoint.

The corresponding PLC input is Sink.

NPN output

The load must be connected between the "+" positive terminal and the midpoint.

The corresponding PLC input is Source.

$\"PNP$

Some sensors have two PNP and NPN outputs (4-wire sensors) which are wired according to the diagram below.

$\"PNP$

Note that we no longer sell sensors. Telemecanique Sensors, who were previously part of the Schneider Electric brand, were sold in 2023. You can go to their website - www.telemecaniquesensors.com - for more information, including contact details.

"},{"Title":"What is the selection criterion of Circuit Breakers for the Capacitor bank application.","UrlName":"FAQ000193301","LastModifiedDate":"28/02/2026","score":1.0010849909584087,"firstpublisheddate":"23/04/2010","answer":"

The selection should be done after derating the Circuit Breaker taking into consideration voltage variation and capacitors tolerances that could increase nominal current up to 1.5In.

\n\n

The Derating factor of 1.5In

\n\n

Where In = Q/ ( Square root of 3 ) Un

\n\n

Q = Capacitor Power

\n\n

Un = Nominal Voltage

\n\n

Choose the Micrologic with delay time selection, so that the Circuit Breaker does not trip due to initial high inrush current.

\n\n

Also to be taken into account are the parameters like supply frequency, operating voltage & harmonics level of the power system for such application.

\n\n

Refer the attached sheet for further details for selection of Circuit Breaker for Capacitor duty application.

\n\n

Note: Use the phase barrier between the phases in Circuit Breaker to prevent flashover due to heavy inrush current.

"},{"Title":"PACTware® - How to update device catalog","UrlName":"FAQ000272656","LastModifiedDate":"09/12/2025","score":1.0001808318264014,"firstpublisheddate":"13/02/2025","answer":"

There are three ways to access the device Catalog in PACTware®:

1. By clicking on the Device Catalog icon:

$\"Device$

2. By going to the View menu and clicking on "Device catalog":

$\"View$

3. By pressing F3 on your keypad.

While using any of the methods explained above open the Device Catalog, which will be shown on the right of your PACTware® screen. Click on the Update device catalog button. A message will pop up asking if you want to Create new PACTware® device catalog. Say YES by pressing the Yes button:

$\"Update$

A new message like the one below will be displayed. WAIT until the process is finished.

$\"catalog$

Once the process is completed the pop-up window will automatically disappear, and the Device catalog database will be now be updated.

NOTE:

If the DTM you are looking for does not appear in the Device Catalog after updating the database, it may indicate that the DTM for your instrument type has not been installed on your computer. If that is the case,

- Download the DTM installer from se.com and unzip it to a local folder in your computer.
- Close PACTware (PACTware cannot be running while installing your DTM)
- Run the installer as an Admin (right click on the file and click on "run as administrator").

Once the DTM is installed, open PACTware and update the Database library with the steps explained in this knowledge article.

Questions: Help is available at FieldDevices-Support@se.com

"},{"Title":"How do you calculate the wear level of TeSys Giga contactor ? By calculating the on/off time ? Why is opening speed better than opening time ?","UrlName":"FAQ000220715","LastModifiedDate":"14/10/2021","products":"TeSys Giga contactors","score":1.0001808318264014,"firstpublisheddate":"17/09/2021","answer":"Contact tips wear rate of is linked to the opening speed and not the opening time. Our algorithm is based on this concept with a dedicated electronic circuit.
Arc Voltage is a function of contact separation speed. And Wear Rate is a function of Arc Energy.
"},{"Title":"What are the differences between snap-action and slow-break contacts in limit switches?","UrlName":"FA22871","LastModifiedDate":"29/06/2026","score":0.9879500246588854,"firstpublisheddate":"20/12/2010","answer":"

Note we no longer sell limit switches so the information given below is for information purposes only. You may still be able to buy Telemecanique limit switches (and some 9007 etc. ex-Schneider Electric ranges) but you'd need to go to them directly. This is their website for contact details and product information: www.telemecaniquesensors.com

Snap action

The speed of travel of snap-action contacts is not related to the speed of operation of the actuator. The actuator pretensions an "overcentre spring" mechanism and it is the spring tension which operates the contact once a certain tension has been achieved. This results in a very fast and assured operation of the contacts as the spring mechanisms "flicks" (or "snaps") over the trigger point and latches the contacts on. A similar action takes place on the release, i.e. as the actuator is released the spring tension reduces but the contacts do not move until the tension has dropped below a certain level, when the spring mechanism will snap the contacts open again.

Slow Break

A "slow break contact" is one where the physical movement of the actuator is directly linked to the physical movement of the contact. This can give very precise positioning and synchronization of both make and break points but is susceptible to arcing and intermittent signalling at the crucial make/break position, where actuator movement is slow and/or erratic.

Main differences between Snap Action and Slow Break

The snap action contact mechanism inevitably creates a hysteresis effect, where the closing and opening of the switch have considerable overlap. Please see attached timing diagram example. This does not occur with slow break, as the movement of the contacts is directly linked to the movement of the switch / object.

Slow break have a higher minimum actuation speed, to overcome the effect of sustain arcing on the contacts. Note that for applications that cause the switch to open a little and then re-close repeatedly / rapidly, this can reduce electrical durability over time.

Both types commonly have positive opening N/C contacts (always check your switch to confirm), but snap action provide an assured signal at slower speeds, whereas slow break rely on the minimum actuation speed. This is why there is potential for intermittent signalling on slow break, if that minimum speed is not adhered to.

Slow break can often switch bigger loads and offer higher electrical reliability values compared to snap action but please check product tables / data to confirm this on a case-by-case basis.

Sequence of moving contacts

$\"Timing$
Timing Sequence for "Snap Action". Note overlap of switching positions for different directions of travel.

$\"Timing$

Timing sequence for "Slow Break". Note same position for make and break.

"},{"Title":"How does the \"Dead man's switch\" or \"Dead man's handle\" position work on a controller handle?","UrlName":"FA23925","LastModifiedDate":"27/11/2025","score":0.967845422275802,"firstpublisheddate":"24/11/2010","answer":"

Please note that we no longer sell joysticks, so this FAQ is for information only.

Technological description

The handle grip comprises a fixed part (lower section) and a moving part (upper section).
Action on the upper part of the handle grip (pressing down) drives a sliding rod inside the control lever.
This rod actuates a moving retainer which causes a change in electrical state of the contact element on the lower part of the mechanism, regardless of the position of the control lever.

Operation

In normal operation, the operator must maintain pressure on the handle grip to operate the machine.
If the operator releases pressure (e.g. feels ill and passes out), even if they are still holding on to it, the electrical contact at the base will change state.

$\"Dead$

"},{"Title":"What is the difference between PNP and NPN when describing 3 wire connection of a sensor?","UrlName":"FA142566","LastModifiedDate":"02/07/2025","products":"","score":0.9138800407831924,"firstpublisheddate":"03/05/2012","answer":"

Most industrial proximity sensors (inductive, capacitive, ultrasonic and photo electric) are solid state.

The term solid state refers to the type of components used within the sensor. Solid state electronic components such as transistors are used to switch the output of the sensor upon detection of an object.

Two specific types of 3 wire sensors are available; PNP and NPN. The difference is a result of the internal circuit design and type of transistors used. Refer to attached document for simple explanation of the two.

A key point to observe is that PNP and NPN has nothing to do with whether the sensor is normally open (N/O) or normally closed (N/C), i.e. a PNP sensor may be either N/O or N/C as can an NPN be either N/O or N/C.

Please note that the subject of this FAQ is specifically related to wiring PNP/NPN outputs for sensors, not to give a detailed understanding of transistor technology. However, for ease of understanding please see attached a page extracted from our Practical Aspects book, showing (in brief) transistor terminology and circuit diagrams. Further learning material regarding PNP and NPN transistors can be found online from several sources.

Why two types?

The selection of a PNP sensor verses an NPN sensor is determined by the nature of the circuit the device is to be used in. When used in a traditional relay type control circuit, it is normally possible to use either the PNP or the NPN type of sensor as shown below. PNP sensors tend to be more commonly used.

Wiring

Traditional relay type control circuit;

$\"3$ $\"3$

Use with a programmable logic controller (PLC).

When selecting a sensor to be used with a PLC, it is very important that the sensor matches the type of PLC input card to be used.
Two types of input cards exist, those that 'sink' current (also known as positive logic) and those that 'source' current (also known as negative logic). It is worth mentioning, that whilst the terms sinking / sourcing and positive / negative logic are well known in some industries, they are not always commonly used terms. It is therefore important to identify the type of sensor to be used with the PLC card based on the PLC manufacturer's documentation and / or wiring diagrams.

Most common in Europe is the 'sinking' type of input, these will be used with the PNP sensor as shown below. Less common nowadays are input cards that 'source', these were popular in Asia and require the NPN type of sensor in order to operate correctly. Many modern PLC input cards can be configured and wired to be either 'sinking' or 'sourcing' although it will usually necessitate all inputs on a particular input card being configured the same.

NOTE the dotted line in the following diagram is optional and may or may not be required, depending on your hardware/setup. The key wires to take note of are solid red, black and blue wires.

$\"PNP$ $\"NPN$

"}],"getPv":[{"Title":"Video: Does the ATV312 drive come with a remote keypad?","UrlName":"FA234997","LastModifiedDate":"11/12/2024","products":"Altivar 312","score":1.0041739130434784,"firstpublisheddate":"19/02/2016","answer":"

Issue:
Is a remote keypad come with the ATV312 drive as standard?

\n\n

Product Line:
ATV312

\n\n

Environment:
All models and serial numbers

\n\n

Cause:
None

\n\n

Resolution:
The ATV312 drive does not come with a remote keypad as a standard item. It must be ordered separately.
Remote Keypad Display
(IP54) ATV312, ATV12 VW3A1006
(IP65) ATV312, ATV12 VW3A1007
Mounting Kit, VW3A31101
Graphic Display (used also with ATV61 and ATV71) VW3A1101

\n"},{"Title":"Video: Can you use a standard CAT5 cable to connect the ATV630 process drive and the VW3A1111 remote keypad.","UrlName":"FA309499","LastModifiedDate":"16/12/2025","products":"Altivar Process ATV900, Altivar Process ATV600","score":1.0013913043478262,"firstpublisheddate":"28/02/2017","answer":"Issue:
Using a standard CAT5 cable to connect the ATV630 process drive and the VW3A1111 remote keypad.

Product Line:
ATV630 and ATV930 drive

Environment:
All

Cause:
Wants to connect a standard CAT5 cable to connect the VW3A1111 to the ATV61 drives HMI port.

Resolution:
Yes can you connect a standard CAT5 cable to the VW3A1111 keypad display.

You will need to remove the bottom rubber cover on the VW3A1111 keypad display. Once the rubber cover is pulled back you will see the RJ45 for attaching the CAT5 cable.

"},{"Title":"Video : Getting Started with Altivar Process ATV600","UrlName":"FA364431","LastModifiedDate":"22/04/2026","products":"Altivar Process ATV600, Altivar Process ATV900","score":1.0010434782608695,"firstpublisheddate":"25/02/2019","answer":"

Getting started with the Altivar Process ATV600
The main steps to start your variable speed drive.

For Chinese version please watch here = ATV600入门指南

"},{"Title":"Video: How to restore APC PowerChute device drivers on Windows?","UrlName":"FA164514","LastModifiedDate":"22/04/2026","products":"PowerChute Personal Edition, PowerChute Business Edition","score":1.0010434782608695,"firstpublisheddate":"15/11/2012","answer":"

Issue:
Missing APC UPS device drivers.

A USB driver for communications between the APC UPS and Windows OS is pre-installed in Windows OS. The drivers should load automatically once the APC UPS has been connected to the computer using the proper USB cable. If the driver does not load, please review Video: How to verify USB communications between UPS and Windows OS using UsbDeview.exe.

NOTE: The PowerChute APC UPS driver is bundled with the PowerChute installer. The APC UPS driver will be available when PowerChute has been installed. If the APC UPS driver is unavailable, run the PowerChute installer with a UPS connected via USB to install the driver.
Or, download the attached ApcUpsUsbDriver.zip. Uncompress the zip and follow the instructions provided in the Readme.pdf.

Product Line:
PowerChute Business Edition
PowerChute Personal Edition
PowerChute Serial Shutdown

Environment:
Windows 10, 11, Windows Server Core, Windows Server 2019, 2022

Cause:
Drivers did not load.

Solution:

To change from the HID UPS driver to APC UPS:

Go to the Windows Control Panel - Administrative Tools - Computer Management.
From the left-side panel in the Computer Management dialog, under System Tools, select Device Manager, then Batteries. You should see a driver called APC UPS or APC Battery BackUPS. If you don't see either of these drivers, you will need to install the driver by going with the steps below.
Double-click on "HID UPS Battery".
Click on the Driver Tab
Click on the "Update Driver..." button.
Choose the option to browse for the driver software or install the driver from a list. The option presented will depend on the operating system on which you are installing the driver.
When presented with Search for driver software in this location and Let me pick from a list of device drivers click on Let me pick from a list of device drivers.
Select APC UPS or APC Battery BackUPS from the list of drivers.
On some operating systems, a system reboot is required before the device will work properly. If requested, please reboot the system.

For Azure and Core user's to check the driver use pnputil.exe in PowerShell or the Command Prompt. See Microsoft Ignite linked article for instruction on using pnputil.exe. https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/pnputil-examples

"},{"Title":"How do I connect my wiring kit in PrismaSeT Active?","UrlName":"FAQ000209408","LastModifiedDate":"11/02/2026","products":"PrismaSeT P Active, PrismaSeT Active, PrismaSeT G Active","score":1.000695652173913,"firstpublisheddate":"12/07/2021","answer":"

We suggest that you proceed as follow:

Connect the fuses as close as possible to the power supply
Adjust the length of the wires downstream of the fuses according to your needs (the part of wires between the fuses and the connectors of the gateway)

$\"How$

If your are looking for further information regarding the steps to follow when installing the wiring kit, watch this video:
https://www.youtube.com/watch?v=Du8xGHIu9M4

You can also access this instruction sheet:
https://download.schneider-electric.com/files?p_enDocType=Instruction+sheet&p_File_Name=NNZ50846-01.pdf&p_Doc_Ref=NNZ50846

And find here the assembly guide for PrismaSeT Active:

https://download.schneider-electric.com/files?p_Doc_Ref=DESW026EN&p_enDocType=Catalog (English)

https://www.se.com/ww/en/download/document/DOCA0204FR/ (French)

"},{"Title":"Video: What causes USF Undervoltage on an ATS22 Soft Starter?","UrlName":"FA234013","LastModifiedDate":"07/10/2025","products":"Altistart 22","score":0.9926534914361002,"firstpublisheddate":"29/08/2014","answer":"Issue:
Why is USF displayed on Altistart 22?

Product Line:
Altistart 22 ATS22

Environment:
All models, All serial numbers.

Cause:
USF is being triggered when the starter is supplied with proper power.

Resolution:
USF is an Undervoltage Fault. Basically, the incoming supply voltage is too low.

The following parameters affect the USF fault:
-In the ConF menu,\n

UIn should be set to the nominal incoming 3 phase voltage.

\n\n

The factory default is 480V for S6 and S6U ranges, and 400V for Q range.

\n-In the PrO menu,\n\n

USd ( Under Voltage Threshold ) sets the threshold as a percentage of parameter UIn.
USt (Under Voltage Time Delay ) sets the amount of time delay in seconds until a USF trip. The voltage must remain under the threshold for the entire delay to activate the fault.

\n
Note that the under voltage protection feature becomes operational only after a run command has been issued. When voltage drops to zero, the soft starter will trip immediately, overriding the time delay.
An isolation contactor that is not pulling in with run command applied can also cause USF as the main power to the soft start is not made.

Example:
Uln= 480V, USd = 70%, USt = 5 seconds. So, if after a run command is issued, the incoming voltage drops to less than 336 volts (480V * 70%) and stays there for more than 5 seconds, USF will be triggered.

"},{"Title":"Video: What is Modbus Tester and how do I use it?","UrlName":"FA180037","LastModifiedDate":"13/05/2026","products":"Integrated Power & Energy Management Software, Meter Configuration Utilities, Communications, Multi-circuit Power and Energy Meters, Basic Multifunction Power and Energy Meters, Advanced Power Quality Meters","score":0.972799253094667,"firstpublisheddate":"04/10/2012","answer":"

Issue
Need a simple tool that can read Modbus registers.

Product Line
Modbus Tester

Cause
Diagnosing communications or verifying values.

Resolution

Modbus Tester is a Windows-based tool designed for simple register reading and writing. The screenshot below highlights commonly used value blocks, and the accompanying video demonstrates how to read and write registers.
Note: Modbus Tester is hardcoded to use port 502.

$\"Modbus$

Attached is a copy of the program.

"},{"Title":"Video: How do I configure preset speed operation on Altivar 320 Drives?","UrlName":"FA308066","LastModifiedDate":"17/05/2021","products":"Altivar 320","score":0.9354168797953964,"firstpublisheddate":"06/02/2017","answer":"Issue:
Can I set up preset speed on Altivar 320 Drives?

Product Line:
ATV320, Altivar 320

Environment:
All ATV320 Drives

Cause:
How to program the ATV320 for preset speeds?

Resolution:

Preset speed function can be assigned two ways to Altivar 320.
1) Logic inputs
2) Communication networks

1) Through Logic inputs

To assign preset speeds to Altivar range of drives, follow below path while operating JOG dial.

RDY--> CONF --> FULL --> LAC -->Epr (Expert)
RDY--> CONF --> FULL --> Fun [Application Function]-->PSS- [Preset Speeds] -->PS2 [2 Preset speeds] = DIx. Here x refers to an available
logic input number.

When this particular DIx is ON, SP2 (preset speed 2) reference will be considered.

Similarly, PS4, PS8 and PS16 can also be assigned to DIx to activate 4 preset speeds, 8 preset speeds and 16 preset speeds
operation respectively.

2) Through communication networks

RDY-->CtL [Command Menu]-->LAC [Access Level]] = L3 [Level 3]

Assign any one bit from bit 11^th to 15^th of control word of particular communication network on which ATV320 is being used to
preset Speeds (PS2, PS4, PS8 or PS16). Communication network could be one out of Modbus, CANOpen, DeviceNet or Profibus.
When assigned bit of control word is HIGH, corresponding preset speed function (PS2, PS4, PS* or PS16) will be activated, and
accordingly SP2 to SP16 will come into effect.

Please refer to page 180 of the ATV320 Programming Manual for truth table of preset speeds."}],"getPa":[{"Title":"What is the meaning of the utilisation categories AC1 and AC3 for the Tesys contactors?","UrlName":"FA23926","LastModifiedDate":"05/02/2026","products":"TeSys Deca Advanced, TeSys k, TeSys Giga contactors","score":1.0243019669353826,"firstpublisheddate":"20/10/2010","answer":"

The standard utilisation categories defines the current making and breaking values for contactors.
They depend on the following:

\n\n

The type of load to be controlled (squirrel cage or slip ring motor, resistors etc.)
The operating cycle conditions (motor running, stalled or starting, reverse operation, counter-current braking etc.)

\n \n\n

AC-1 category

\n\n

This applies to all AC devices (loads) with a power factor of at least 0.95 (cos phi greater than or equal to 0.95).
Examples of use: resistive load, heating, distribution

\n\n

AC-3 category

\n\n

This applies to squirrel cage motors where breaking occurs while the motor is running.
Examples of use: all squirrel cage motors, lifts, escalators, conveyors, bucket elevators, compressors, pumps, mixers, air conditioning units

\n\n

Note concerning contactor part numbers

\n\n

The most common application of contactors is controlling squirrel cage asynchronous motors.
Hence, Schneider Electric contactor part numbers are based on the AC-3 rating.

\n\n

For example, the LC1D18xx contactor is designed to control motors with a nominal current rating of 18 A (AC-3).
This contactor is capable of withstanding current peaks (~ 100 A) on starting, such as are typical on inductive machines like motors, without sustaining any damage.
It can also control resistance heaters for current ratings up to 32 A (AC-1). This load is resistive, hence there are no current peaks.

Utilization categories are defined in full in regulation IEC 60947-1

"},{"Title":"What does light or dark switching mean when referring to photo electric sensors?","UrlName":"FA143615","LastModifiedDate":"17/03/2025","score":1.0188465887674332,"firstpublisheddate":"03/05/2012","answer":"

Please note - As of 01/09/23 the Telemecanique Sensors range is no longer part of Schneider Electric. This FAQ is now for reference only. For further information and contact details for Telemecanique Sensors, please visit their website; https://www.telemecaniquesensors.com/global/en.

There are 3 main types of photo electric sensor used for detecting an object;

Diffuse (sometimes also called proximity mode or direct detection). There is also a variation of diffuse called diffuse with background suppression (diffuse with BGS).
Retro reflective (sometimes also called reflex). There is also a variation of reflex called polarised reflex (or polarised retro reflective).
Through beam (sometimes also called thru' beam).

Determining normally open (N/O) or normally closed (N/C) operation?

Both the retro reflective and through beam sensors rely on the object 'breaking' the beam in order for it to be detected. Whereas the diffuse system requires the object itself to reflect the light beam.
Because of this fundamental difference in the way the sensors detect an object, retro reflective and through beam sensor outputs are the inverse of diffuse sensors. This leads to a lot of confusion.

Historically

Within the photo electric industry, to overcome the confusion of referring to N/O or N/C outputs, the term 'light switching' and 'dark switching' was introduced;

Light switching;

A sensor that is light switching switches it's output 'on' when the light beam is returned to the receiver. i.e. If N/O operation is required, a light switching diffuse sensor could be used.

$\"Light$

Dark switching;

A sensor that is dark switching switches it's output 'on' when the light beam blocked from returning the beam to the receiver. i.e. If N/O operation is required, a dark switching retro reflective or through beam sensor could be used.

$\"Dark$

Recent developments

To simplify product selection, Schneider Electric (under the Telemecanique brand) pioneered the concept (launched as Osiconcept) of 'object detection' with it's Osiris multimode range of sensors. With these products, irrespective of whether the sensor is configured for retro reflective, through beam or diffuse the output will default to N/O. Another feature of these multimode sensors is the ability to invert the output to achieve a N/C mode of operation.

"},{"Title":"What is the difference between isolated and non-isolated coaxial sockets? e.g. GUE7011W","UrlName":"FA166870","LastModifiedDate":"30/10/2024","products":"Lisse, Ultimate","score":1.0065993956733175,"firstpublisheddate":"10/01/2013","answer":"A non-isolated coax socket is a standard socket. If you wish to install a socket to connect your TV coax lead into, this is what is required. Also, this version must be used for satellite installation as a two way signal is required. The satellite box does not only receive a signal, it also sends a signal back to the satellite dish. An isolated coax socket will block the return signal.

An isolated socket lets the signal through from the aerial/satellite dish but does not allow any kind of return signal/current. This type of socket would be used where a communal dish or aerial is installed, such as in an apartment block. The isolated socket blocks interference from receivers (televisions, digital boxes, satellite boxes) which spoils the signal which the rest of the users receive."},{"Title":"How do I connect / wire a contactor and overload to create a Direct On Line (DOL) Starter?","UrlName":"FA139744","LastModifiedDate":"27/11/2025","products":"TeSys LE, TeSys Deca Advanced","score":1.0059716009584083,"firstpublisheddate":"12/12/2011","answer":"

Attached is a .pdf file with pictorial diagrams ⁽¹⁾ of how you would connect the four most common variants of a DOL starter.

They show diagrams for 240 and 415 VAC control. The most common for small Direct On-Line Starters (DOLs) is 415VAC, as this requires no neutral to be fed to the starter.

Options are also given for using either a remote stop switch or for using the stop button which is integral with the overload. In the latter case the stop button is not a switch, it is a plunger type device fitted into the lid/door of the enclosure, which will physically press the overload stop. This is the method that is used in the Schneider Electric TeSys enclosed motor starters, such as the TeSys LE range.

$\"Tesys$

Remote and Emergency stops⁽²⁾ are shown fitted between terminals A2 and 96, though they can also be fitted between 14 and 95, or even both if multiple stops are involved.

Warning
Particular care must be taken to accurately fit the stop button when using the plunger type stop without any additional remote stop, as if for any reason the plunger does not activate the stop button on the overload, there will be no way of stopping the motor without disconnecting the supply.

NOTES:
(1) These drawings are functional schematics. It remains the responsibility of the installer to ensure that the requirements of local directives and legislation are met and that appropriate circuit protection is provided.
(2) Inclusion of E stops in these circuits is purely for illustrative purposes and may be acceptable in simple relatively low risk safety systems. However, depending on the risk assessment carried out on the plant it may not be appropriate, other Emergency Stop facilities may be necessary, particularly in high risk applications. Consult you safety consultant.

NOTE regarding Terminal Numbering

The circuits are based upon TeSys D range contactors and overloads. Terminal numbering is to a common standard so most other contactors can be wired similarly. However, be aware that there are contactors that use different numbering systems.

NOTE if using TeSys K

The TeSys LR2K overloads (LR2K****) for use with TeSys K range contactors (LC1K****) have additional pins on their overloads to make direct connection to terminals 14 on contactor to 95 on overload and A2 on contactor to 96 on overload. The diagrams provided in the attached PDF file do not relate to such TeSys K systems unless the 2 right hand pins are first removed. These pins are specially weakened for this purpose and may easily be snapped off by bending backwards with a pair of pliers as shown for one pin on the diagram below

$\"Instructions$
However, doing this is just making extra work. It is better to wire in accordance with the K Series diagram.

"},{"Title":"Will Vijeo Designer work on Windows 7 64 bit?","UrlName":"FA142617","LastModifiedDate":"05/05/2025","products":"Vijeo Designer","score":1.0052770448548813,"firstpublisheddate":"15/03/2012","answer":"

The compatibility depends on the version and Service Pack of Vijeo Designer.
The table below gives some information
\n

Version and Service Pack	Windows 7 32-bit	Windows 7 64-bit
Vijeo Designer V6.0 SP1.1 - 2.0	Yes	No
Vijeo Designer V6.2 SP6.0	Yes	Yes

For other Versions and Service Packs please read the Release Notes that a company the software to check compatibility.

Note: You can NOT install V6.0 on a Windows 7 64-bit PC, as it’s only suitable for 32-bit machines, this means you actually install SP1.1 directly, as in reality, this is a full version.

You then register the details of the new V6.0 CD, or V6.0 update CD serial number and part number.

Customers can download Vijeo Designer Service packs from the PRM Partner Portal as long as they have an active subscription, and can be found under patches.

https://partner.schneider-electric.com/partners/Menu/Login

Please note: The Eclipse portal is now closed, current accounts have been migrated into the PRM Partner Portal.

"},{"Title":"What is the cabling diagram for the SR1CBL01 cable?","UrlName":"FA27937","LastModifiedDate":"25/06/2026","products":"Zelio Logic","score":1.0041462495288354,"firstpublisheddate":"03/02/2011","answer":"

NOTE that SR1 relays are obsolete, replaced by SR2 and SR3. Click on the product link on the right for more information.

The SR1CBL01 is the programming cable to be used with the Zelio Relay SR1.

To be able to connect first generation Zelio programmable relays (part number SR 1xx) to a PC supporting the ZelioSoft programming software (part number SR1SFT01) you must have the SR1CBL01 programming cable.

The wiring diagram is as follows: Zelio connector end: brown: 2, yellow: 7, red: 3, orange: 5. PC SubD9 end: brown: 7, yellow: 2, red: 3, orange: 5.

$\"ImagePinOut\"$
Please Note: This cable and configuration is for the Zelio Logic First Generation - These items will not work with SR2 devices, Zelio Logic 2, or Zeliosoft2 Programing Software.

*********************************************************NOTE*******************************************************************
The Zelio SR1 software , devices and modules are discontinued. Please check the Zelio Smart Relay SR2 or SR3.
***********************************************************************************************************************************

"},{"Title":"What is the pin-out of the cable XBTZ915?","UrlName":"FA22680","LastModifiedDate":"15/08/2025","products":"Vijeo Designer, Magelis XBT GT, Magelis XBT N, R, RT, Magelis GTO, Magelis GTU, Magelis GK, EcoStruxure™ Operator Terminal Expert","score":1.0041462495288354,"firstpublisheddate":"08/12/2010","answer":"

Below is the pin-out of cable XBTZ915
$\"Pin$

"},{"Title":"In a star-delta starter, how can I incorporate a thermal overload relay as per Type 1 or Type 2 coordination?","UrlName":"FA86594","LastModifiedDate":"19/11/2024","products":"TeSys B, TeSys k, TeSys F, TeSys Deca Advanced, TeSys SK, TeSys Giga circuit-breakers, TeSys Giga protection relays, TeSys Giga contactors, TeSys Quickfit, TeSys GC, GY, GF16","score":1.0041462495288354,"firstpublisheddate":"09/02/2011","answer":"

Only tests carried out by accredited laboratories allow the announcement that a combination of equipment can protect the installation according to type 1, type 2 or total coordination.

These combinations are very clearly specified in tables by the manufacturer (Schneider Electric) and do not allow any exceptions. See the link to these tables at the end of the folder.

When using a star/delta starter, the required level of coordination for the installation determines:

The ratings and part numbers of the 3 contactors
The ratings and part numbers of the circuit-breakers or isolators
The rating, part number and position of the thermal overload relay in the sequence

Type 1 coordination
The thermal overload relay is placed in the delta circuit and must be set to 0.58 x motor In.
The relay is less expensive as it has a low rating.

Type 2 coordination
The thermal overload relay is placed under the line contactor and must be set to motor In. It is not possible to obtain type 2 coordination by placing the thermal relay in the delta circuit.
The product is protected irrespective of the operating phase.

Information on coordination: Coordination 1 and 2

For extra info see attached selection guide taken from section A6 of our Motor Control and Protection catalogue

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