Danfoss VLT MCD 201 Design Guide

MCD 200 Design Guide
18 MG.17.C3.02 – VLT is a registered Danfoss trademark
MCD 202
Function:
Sets the allowable phase rotation sequence of the
incoming supply.
Description of choice:
The MCD 202 itself is phase rotation insensitive. This
function allows motor rotation to be limited to one
direction only. Set the protection according to
application requirements.
8 Auxiliary Relay Function (Terminals 23, 24)
Value:
Trip, Run
✭ Trip
Function:
Sets the functionality of the Auxiliary Relay (Terminals
23,24).
Description of choice:
Set as required, using the combined Phase
Rotation/Aux Relay adjustment.
U
e
RUN
Main
Contactor
■ Motor Thermistor Protection
Motor thermistor cut out value = 2.8 kΩ.
■
Indication
LED OFF ON FLASH
Ready No control
power
Ready Starter
tripped
Run Motor not
running
Motor
running at
full speed
Motor
starting or
stopping
■ Fault Finding
Ready LED Description
x 1
Power Circuit Fault:
Check mains supply L1, L2 & L3,
motor circuit T1, T2 & T3 and soft
starter SCRs.
x 2
Excess Start Time:
Check load, increase start current or
adjust Excess Start Time setting.
x 3
Motor Overload:
Allow motor to cool, reset soft starter
and restart. (MCD 202 cannot be reset
until motor has cooled adequately).
x 4
Motor Thermistor:
Check motor ventilation and thermistor
connection 05 & 06. Allow motor to
cool.
x 5
Phase Imbalance:
Check line current L1, L2 & L3.
x 6
Supply Frequency:
Check supply frequency is in range
x 7
Phase Rotation:
Check for correct phase rotation.
x 8
Network Comms Failure (between
accessory module and network):
Check network connections and
settings.
x 9
Starter Comms Failure (between starter
and accessory module): Remove and
refit accessory module.

Danfoss VLT MCD 201 Specifications

General

Brand	Danfoss
Model	VLT MCD 201
Category	Controller
Language	English