Danfoss vlt soft starter mcd 500 - 6 Operation; Control Methods

6 Operation
6.1 Control Methods
The VLT
®
Soft Starter MCD 500 can be controlled:
•
Via the control keys on the LCP (local control).
•
Via the remote inputs (remote control).
•
Via the serial communication network.
•
Local control is only available in hand-on mode.
•
Remote control is only available in auto-on mode.
•
Control via the serial communication network is always disabled in hand-on mode. Enable or disable start/stop
commands via the serial network in auto-on mode by changing the setting of 3-2 Comms in Remote.
The MCD 500 can also be congured to autostart or autostop. Auto-start/stop operation is only available in auto-on mode.
In hand-on mode, the soft starter ignores any auto start/stop setting. To congure auto start/stop operation, set parameters
5-1 to 5-4.
To switch between hand-on mode and auto-on mode, press the keys on the LCP.
•
[Hand On]: Start the motor and enter hand-on mode.
•
[O]: Stop the motor and enter hand-on mode.
•
[Auto On]: Set the soft starter to auto-on mode.
•
[Reset]: Reset a trip (hand-on mode only).
The MCD 500 can also be set to allow local control only or remote control only, using parameter 3-1 Local/Remote.
If parameter 3-1 Local/Remote is set to Remote Control Only, the
[O] key is disabled. Stop the motor by remote control or via
the serial communication network.
Hand-on mode Auto-on mode
To soft start the motor. Press [Hand On] on the LCP. Activate the Start remote input.
To stop the motor. Press [O] on the LCP. Activate the Stop remote input.
To reset a trip on the soft starter. Press [Reset] on the LCP. Activate the Reset remote input.
Autostart/stop operation. Disabled. Enabled.
Table 6.1 Start, Stop, and Reset in Hand-on Mode and Auto-on Mode
To stop the motor with a coast to stop, regardless of the setting in parameter 1-10 Stop Mode, press
[O] and [Reset] at the
same time. The soft starter removes power from the motor and opens the main contactor, and the motor coasts to stop.
NOTICE
Brake and jog functions operate only with in-line connected motors (see chapter 5.6 Inside Delta Operation).
Operation Operating Guide
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