Cause:
- when the frequency inverter is switched on, the monitoring contact of the brake chopper or brake resistor is not closed
Remedial action:
- check the connection and function of the temperature monitoring of the brake chopper or brake resistor
- ensure that a voltage of 24 VDC is applied to terminal X-IN between +24V_IN and GND_IN (see manual chapter "Braking resistor" and "Digital inputs (X-IN)")
- check the parameter "BR_TYP" in menu "Encoder & BC"
- switch ZAdyn off and on again