Motor Contactor Delay Times
Motor Contactor Delay Times
The Elevator Core can control when the motor contactor opens and closes by sending signals to open or close the motor contactor. This can be done by connecting to an Output on the drive and then setting option 11: Contactor Control from the relevant output function select parameters.
Normally the Motor Contactor is connected to Relay 1.
The delay times shown below are important to get correct. If the motor contactor is in the wrong state then there is a chance both the drive and motor could be damaged.
Motor Contactor Monitoring Delay at
The drive can set a delay for the time taken to close the motor contactor before starting. It is important for this time to be correct as if the motor contactors are open the drive could be damaged.
This can be done with Parameter P3-01 Motor Contactor Closing Time.
The time in P3-01 should be set long enough for the motor contactor to safely close before the drive output turns on.
During the drive's starting sequence the motor contactors will always be the first action after the drive has been given a run command. This part of the travel sequence can be monitored using P0-35 (Travel Profile State) and while the time in P3-01 is active the state will show 5: Motor Contactor time Active.
Motor Contactor Monitoring Delay at Stop
After the stopping sequence has finished the as the last step the drive will signal to open the motor contactors.
The delay time is a fixed 100ms.
Parameter Number | Parameter Name | Units | Default | Available Settings | Access | Change During Run | Scaling | Size (Bytes) | CAN Register | CAN Sub Index | Modbus Register |
|---|---|---|---|---|---|---|---|---|---|---|---|
P3-01 | Motor Contactor Closing Time | sec | 0.2s | 0.0 ... 5.0s | RW | Y | 1 = 0.1s | 1 | 212Dh | 0 | 301 |
Sets a delay time between a Direction signal being applied to the drive and the drive energising the motor, this ensures that the motor contactor has had enough time to change state before current flows from the drive to the motor.
Typical values are 0.2 to 0.5 seconds.
During the delay time the drive will display “CC”. When the display shows CC this means the motor contactor is closing.