Emotron EMX-B, Инструкция по эксплуатации

Страница: 46 / 60

42 Troubleshooting
CG Drives & Automation 01-6048-01r3
Motor diagnosis:
1. Disconnect power supply to the EMX-B unit and remove all the
connections.
2. Measure the resistance of the motor using a digital multi-meter. Values
should match as provided in Chapter 5.1 page 46. Any deviations found
indicates damage to the motor.
3. Also check the connectivity between each motor phase and the PE cable.
There should ideally be no connectivity.
If the motor does not reach maximum speed or respond to the control signal,
check DIP switches. If the heat exchanger rotates in the wrong direction, change
the setting of DIP switch 5.
If the control unit is to be exchanged, the complete unit including circuit boards
must be exchanged.
WARNING!
Residual voltage remains for up to 5 minutes after
disconnection of the supply voltage. The test switch and the DIP
switches may only be adjusted when the supply voltage has
been disconnected.
NOTE: After changing dip settings the control unit must be power
cycled before the new settings become active.