Mcd5-0245C; Mcd5-0360C To Mcd5-1600C; Motor Connection; Testing The Installation - Danfoss vlt soft starter mcd 500 Operating Manual

Electrical Installation

4.2.2 MCD5-0245C

MCD5-0245C has dedicated bypass terminals at the bottom
of the unit. The bypass terminals are:
•
T1B.
•
T2B.
•
T3B.
4 4
Illustration 4.4 Bypass Terminals on MCD5-0245C

4.2.3 MCD5-0360C to MCD5-1600C

MCD5-0360C to MCD5-1600C have dedicated bypass
terminals on the input busbars. The bypass terminals are:
•
L1B
•
L2B
•
L3B
The busbars on non-bypassed models MCD5-0360C to
MCD5-1600C can be adjusted for top or bottom input and
output as required. See chapter 12 Busbar Adjustment
Procedure (MCD5-0360C to MCD5-1600C) for step-by-step
instructions. The soft starters are manufactured top-in/
bottom-out.
NOTICE
For models MCD5-0360C to MCD5-1600C to be UL-
compliant, mount them top-in, bottom-out, or top-out,
bottom-in. See chapter 11.1 UL-compliant Installation for
more information.
16
VLT
1/L1 3/L2 5/L3
T1B T2B T3B
2/T1 4/T2 6/T3
Danfoss A/S © 05/2016 All rights reserved.
®
Soft Starter MCD 500
2/T1 4/T2 6/T3
(L1B L2B L3B)
1/L1 3/L2 5/L3
Illustration 4.5 Location of Bypass Terminals, MCD5-0360C to
MCD5-1600C

4.3 Motor Connection

®
VLT Soft Starter MCD 500 soft starters can be connected
to the motor in-line or inside delta (also called 3-wire and
6-wire connection). When connecting in inside delta, enter
the motor full load current (FLC) for parameter 1-1 Motor
Full Load Current. The MCD 500 automatically calculates
inside delta current based on this data. Parameter 15-7
Motor Connection is set to Auto Detect as default and can
be set to force the soft starter in inside delta or in-line.

4.3.1 Testing the Installation

®
The VLT Soft Starter MCD 500 can be connected to a
small motor for testing. During this test, the control input
and relay output protection settings can be tested. This
test mode is not suitable for testing soft starting or soft
stopping performance.
The minimum FLC of the test motor is 2% of the minimum
FLC of the soft starter (see chapter 4.5 Minimum and
Maximum Current Settings).
NOTICE
When testing the soft starter with a small motor, set
parameter 1-1 Motor FLC to the minimum allowable
value.
Models which are internally bypassed do not require an
external bypass contactor.
1/L1 3/L2 5/L3
(L1B L2B L3B)
1/L1 3/L2 5/L3
(L1B L2B L3B)
2/T1 4/T2 6/T3
2/T1 4/T2 6/T3
(L1B L2B L3B)
1/L1 3/L2 5/L3
2/T1 4/T2 6/T3
MG17K602