Browse FAQs

How to you connect ATV61 or ATV71, on a motor with PTC Probe?

Published date: 15 September 2019

Connecting ATV61 or ATV71 on a motor, with PTC Probe.

Product Line:  
ATV61, ATV71


PTC Probe connected but not working.

LI6 is a discrete input with which you can switch between two modes: PTC probe and 24V DC.  In this case, the switch "SW2" has to be adjusted to "PTC" .
Thermal monitoring via PTC probes is provided on ATV61 drives by specific inputs. Common characteristics of these inputs:
  • Nominal value < 1.5 kohms.
  • This corresponds to a maximum of 6 probes (250 ohms at 20°C) or to two sets of 3 (sometimes prewired in the motors).
  • Trip resistance: 3 kohms. Reset value: 1.8 kohms. Short-circuit protection < 50 ohms
Location of the inputs:
  - Input LI6 on the terminal block, wire the PTC probes between terminals LI6 and 0V.  This input is seen as a PTC Input if switch SW2 at top of Control Terminal Card is set to PTC.

Note: The parameter Overload Fault Mgmt MUST be set to something other than NO. You need to set it to freewheel.

Was this helpful?

What can we do to improve the information ?

Can't find what you are looking for?

Reach out to our customer care team to receive information on technical support, assistance for complaints and more.