1
77
H
A
4
3
1
.1
1
M
3
F1
6/T3
2/T1
5/L3
3/L2
1/L1
13
14
4/T2
E
KM1
KM1
L1B
L2B
L3B
KM2
34
33
KM2
Illustration 4.7 MCD5-0360C ~ MCD5-1600C
KM1
Main contactor
KM2
Bypass contactor (external)
F1
Semiconductor fuses (optional)
Table 4.8
4.2.3 Inside Delta Installation
CAUTION
When connecting the MCD 500 in inside delta configu-
ration, always install a main contactor or shunt trip circuit
breaker.
NOTE
When connecting in inside delta, enter the motor full load
current (FLC) for
1-1 Motor FLC
. MCD 500 software
calculates inside delta currents from this.
15-7 Motor
Connection
is set to
Auto detect
as default and can be set
to force the soft starter inside delta or in-line.
4.2.3.1 Inside Delta Installation, Internally
Bypassed
Illustration 4.8
KM1
Main contactor
F1
Fuses (optional)
Table 4.9
4.2.3.2 Inside Delta Installation, Non-
bypassed
1
7
7
H
A
5
0
0
.1
1
M
3
6/T3
2/T1
5/L3
3/L2
1/L1
13
14
4/T2
KM1
KM1
F1
U1(1) U2(4)
V1(2)
V2(5)
W1(3)
W2(6)
L2B
L1B
L3B
E
Illustration 4.9
KM1
Main contactor
F1
Fuses (optional)
Table 4.10
4.2.3.3 Inside Delta Installation, Externally
Bypassed
Non-bypassed models have dedicated bypass terminals,
which allow the MCD 500 to continue providing protection
and monitoring functions even when bypassed via an
external bypass contactor. The bypass relay must be
connected to the bypass terminals and controlled by a
programmable output configured to Run (see parameters
4-1 through 4-9).
Electrical Installation
MCD 500 Operating Instruction
MG17K402 - VLT
®
is a registered Danfoss trademark
15
4
4