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Can I use a larger HP Variable Speed Drive to run a smaller HP motor?

Issue: Motor is smaller than the available drive. Product Line: All Altivar (ATV) drives Environment: All Environments Cause: Motor and drive sizing does not match. Motor is smaller HP than Drive. Resolution: YES. In most cases a drive can control a motor with lower HP (and current) rating. The...

What can cause the ATV312 drive to trip on an OLF fault?

Issue: ATV312 trips on an OLF fault Product line: Altivar 312 Environment: All range All serial number Cause: The motor is pulling too much current? Resolution: Motor overload (OLF) is triggered by the motor pulling current above the Motor Thermal Current (ItH) that is programmed into the...

What is the minimum opening time & closing time for the LF Circuit Breaker.

Schneider Make Circuit Breakers are designed on mean opening time or closing time. The value is same for LF1 or LF2 or LF3 Circuit Breakers. It is linked to the operating mechanism RI used for all the LF Circuit Breaker. Mean opening time at Un : 48 ms. Mean Closing time at Un: 65 ms. Where Un =...

What can cause an OC3 fault on the ATV21 and ATV212 drives?

Issue: Why does OC3 trips on the ATV21/ATV212 drives? Product Line: Altivar ATV21 ATV212 S-Flex Environment: All Cause: The drive is running and intermittently trips on the OC3 fault. Resolution: OC3 means overcurrent during constant speed operation. Possible causes : Abrupt fluctuations in the...

How is a fault code cleared or reset, on ATS22?

Issue: Needs to clear a fault code, on the ATS22 soft start. Product Line: Altistart 22 Environment: All models Cause: The fault code must be cleared to make ATS22 functional. Resolution: After the condition that created the fault has been corrected, a fault reset can be accomplished several ways:...

What is the life expectancy of molded case circuit breakers?

Product Line: MCCB Resolution: Life expectancy for molded case circuit breakers in the industry is generally expected to be about 30 years, given favorable environment and regular maintenance. Required maintenance, especially for older breakers, includes annual exercising—OFF, ON, TRIP, RESET, ON....

What is the cause of the EF2 fault code on the ATV21 and ATV212 drives?

Issue: ATV212: EF2 Fault Product line: Altivar ATV212 Environment: All models, all serial numbers Cause: Ground Fault on the output of the drive. Resolution: EF2= Ground Fault Troubleshooting tips Check the motor ground connections. Make sure the ground is going to the chassis of the drive. Remove...

What would cause an ATV61/71 drive to display an OPF2 fault code?

Issue: ATV61/71 drive is displaying a OPF2 fault code. Product Line: Altivar 61, Altivar 71 Environment: All Cause: Motor is not connected, output contactor (if used) is not closing fast enough, or the motor current draw is too low. Resolution: Check all the output connections from the...

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What is the part number of the cable used for communication between TSXSCP114 PCMCIA card and other RS485 device.

TSXSCPCM4030 cable is required from TSXSCP114 PCMCIA card to the Modbus branching device TSXSCA50 for connecting other RS485 device on the Modbus Network. In case TSXSCA50 Modbus branching device is not used, you can connect this cable directly to Modbus RS 485 device. For this you have to...

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