-
N O T I C E
The thermistor input is disabled by default, but activates automatically when a thermistor is detected. If thermistors have previ-
ously been connected to the MCD 600 but are no longer required, use the Thermistor Reset function to disable the thermistor.
Thermistor reset is accessed via Set-up Tools.
5.4.3 Start/Stop
The VLT® Soft StarterMCD 600 requires 2-wire control.
Illustration 8: Start/Stop Control Wiring
C A U T I O N
ATTEMPTED START
If the start input is closed when control voltage is applied, the soft starter attempts to start.
Check that the start/stop input is open before applying control voltage.
N O T I C E
The MCD 600 only accepts command from the control inputs if parameter 1-1 Command Source is set to Digital Input.
5.4.4 Reset/Starter Disable
The reset input (RESET, COM+) is normally closed by default. The soft starter does not start if the reset input is open. The display
then shows Not ready.
If the reset opens while the soft starter is running, the soft starter removes power and allows the motor to coast to stop.
N O T I C E
The reset input can be configured for normally open or normally closed operation. Make the selection in parameter 7-9 Reset/
Enable Logic.
5.4.5 Programmable Inputs
The programmable inputs (DI-A, COM+ and DI-V, COM+) allow external equipment to control the soft starter. The operation of the
programmable inputs is controlled by parameters 7-1 to 7-8.
5.4.6 USB Port
The USB port can be used to upload a configuration file or download parameter settings and event log information from the soft
starter. See 6.7 USB Save & Load for details.
AQ262141844215en-000401 / 175R1174 | 33Danfoss A/S © 2020.12
Installation
VLT® Soft Starter MCD 600
Operating Guide
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