Hi,
Setup:
S7-400 connected to Danfoss VLT2800 through profibus. (PPO2)
Drive is controlled through the PLC.
Issue:
Simple enough setup.
But I've noticed something. If you unplug the output connector, thus removing the power to the motor, and then start the motor, nothing happens.
Nothing telling me the motor is not connected anyways. The Danfoss ramps up and gets to its target speed.
Also telling the PLC it's driving the motor and everything is a-ok.
Question:
Is there any way to make the Danfoss tell the PLC it's not actually driving the motor, that it's output is not connected/no load on output/etc.?
Removing one phase will trip the drive, but removing them all and it's like the drive doesn't even notice.
Tried tinkering with low amps warning etc, but so far haven't been able to get this particular situation known in the PLC.
Due to the mechanical setup, it's not possible to add an external rotation sensor.
Thnx,
Jeebs
Setup:
S7-400 connected to Danfoss VLT2800 through profibus. (PPO2)
Drive is controlled through the PLC.
Issue:
Simple enough setup.
But I've noticed something. If you unplug the output connector, thus removing the power to the motor, and then start the motor, nothing happens.
Nothing telling me the motor is not connected anyways. The Danfoss ramps up and gets to its target speed.
Also telling the PLC it's driving the motor and everything is a-ok.
Question:
Is there any way to make the Danfoss tell the PLC it's not actually driving the motor, that it's output is not connected/no load on output/etc.?
Removing one phase will trip the drive, but removing them all and it's like the drive doesn't even notice.
Tried tinkering with low amps warning etc, but so far haven't been able to get this particular situation known in the PLC.
Due to the mechanical setup, it's not possible to add an external rotation sensor.
Thnx,
Jeebs