MCD 200 Design Guide
16 MG.17.C3.02 – VLT is a registered Danfoss trademark
MCD 202
3 Wire Control
380-440 VAC (CV3)
A3
A1
A2
N1
N2
START
STOP
*
A3
A1
A2
N1
N2
START
STOP
*
(+)
(-)
110-240 VAC (CV3)
OR
24 VAC/VDC (CV1)
177HA210.11
* Also resets the MCD 202
■ Functionality
User Adjustments
Trip
Run
Aux Relay
Motor Trip
Class
Phase
Rotation
Excess
Start Time
OFF
2
4
6
8
10
12
14
16
20
ANY
FWD
ANY
FWD
OFF
2
4
6
8
10
12
14
16
20
No
Soft Stop
2s
4s
6s
8s
10s
12s
14s
16s
20s
100%
70% 80%
60% 90%
50%
350%
450%
400%300%
250%
OFF
2s
5s
15s
15
2s
5s
15s
5s
2s
(% MCD202 FLC)(%FLC / Ramp Time)
(% Motor FLC )
Motor FLC
I
Current Ramp
I
Current Limit
Soft Stop
U
I
M
2
0
0
%
F
L
C
2
5
0
%
F
L
C
1
5
0
%
F
L
C
177HA255.11
1 Motor FLC
Value:
50% - 100% MCD 202 FLC
✭ 100%
Function:
Calibrates the MCD 202 for the Full Load Current of
the motor.
Description of choice:
95%
=
100 A
95 A
177HA233.12
2 Current Limit
Value:
250% - 475% Motor FLC
✭ 350%
Function:
Sets the desired starting current limit.
Description of choice:
The current limit should be set so that the motor
accelerates easily to full speed.
NB!:
Start current must be great enough to allow
the motor to produce sufficient torque to
accelerate the connected load. The minimum current
required to do this is dependent on motor design and
load torque requirements.
3 Current Ramp
Value:
150% Motor FLC (2, 5 or 15 seconds)
✭ Off
200% Motor FLC (2, 5 or 15 seconds)
250% Motor FLC (2, 5 or 15 seconds)
Off
Function:
Sets the initial starting current and ramp time for the
Current Ramp start mode.
Description of choice:
The Current Ramp start mode modifies the Current
Limit start mode by adding an extended ramp.
Typically the Current Ramp start mode would be used
in two circumstances.
1. For applications where start conditions vary
between starts the Current Ramp mode provides
an optimum soft start irrespective of motor
loading e.g. a conveyor that may start loaded or
unloaded.
To Next Page
Loading...
Need help?
General
