177HA431.12
M
3
F1
6/T3
2/T1
5/L3
3/L2
1/L1
13
14
4/T2
E
K1
K1
L1B
L2B
L3B
K2
34
33
K2
K1 Main contactor
K2 Bypass contactor (external)
F1 Semiconductor fuses (optional)
Illustration 4.9 In-line Installation, Externally Bypassed,
MCD5-0360C to MCD5-1600C
4.3.3 Inside Delta Installation
NOTICE
When connecting the VLT
®
Soft Starter MCD 500 in
inside delta conguration, always install a main
contactor or shunt trip circuit breaker.
NOTICE
When connecting in inside delta, enter the motor full
load current (FLC) for parameter 1-1 Motor FLC. The MCD
500 automatically calculates inside delta currents 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.
4.3.3.1 Internally Bypassed
U1(1) U2(4)
V1(2)
V2(5)
W1(3) W2(6)
5/L3
3/L2
1/L1
E
K1 F1
M
3
K1 Main contactor
F1 Semiconductor fuses (optional)
Illustration 4.10 Inside Delta Installation, Internally Bypassed
4.3.3.2 Non-bypassed
K1 F
U1(1 U2(4
V1(2
V2(5
W1( W2(
L2
L1
L3
E
K1 Main contactor
F1 Semiconductor fuses (optional)
Illustration 4.11 Inside Delta Installation, Non-bypassed
Electrical Installation
VLT
®
Soft Starter MCD 500
18 Danfoss A/S © 05/2016 All rights reserved. MG17K602
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