OMRON Sysdrive 3G3HV - Detector Cooling Section

inrush current will actuate the overcurrent protective circuit in the Inverter.
Installing a Thermal Relay
This Inverter has an electronic thermal protection function to protect the
motor from overheating. If, however, more than one motor is operated
with one Inverter or multi-polar motor is used, always install a thermal
relay (THR) between the Inverter and the motor and set n033 to 0 (no
thermal protection).
In this case, program the sequence so that the magnetic contactor on
the input side of the main circuit is turned off by the contact of the thermal
relay.
Installing a Noise Filter on Output Side
Connect a noise filter to the output side of the Inverter to reduce radio
noise and induction noise.
Power
supply
3G3HV
Noise filter
Signal line
Controller
Induction
noise
Radio noise
AM radio
Induction Noise:
Radio Noise:
Electromagnetic induction generates noise on the signal line, causing
the controller to malfunction.
Electromagnetic waves from the Inverter and cables cause the broadcasting
radio receiver to make noise.
Countermeasures Against Induction Noise
As described previously, a noise filter can be used to prevent induction
noise from being generated on the output side. Alternatively, cables can
be routed through a grounded metal pipe to prevent induction noise.
Keeping the metal pipe at least 30 cm away from the signal line considerably
reduces induction noise.
Power
supply
3G3HV
Metal pipe
30 cm min.
Signal line
Controller
Countermeasures Against Radio Interference
Radio noise is generated from the Inverter as well as the input and output
lines. To reduce radio noise, install noise filters on both input and out-