Watson-Marlow MM420 - Manual (Page 66)

3 Functions Issue 10/06
MICROMASTER 420 Operating Instructions
66 6SE6400-5AA00-0BP0
In order to ensure a straightforward, successful commissioning, it is important that
the circuit connection in the motor terminal box (refer to Fig. 3-18) matches the
rated motor voltage entered in P0304 or the rated motor current P0305.
IEC Motor
e.g.: Volts 230 V (Delta connection) / 400 V (Star connection)
U1
V1
W1
Star connection
W2
U1
U2
V1
V2
W1
Delta connection
U1
V1
W1
W2
U1
U2
V1
V2
W1
NEMA Motor
T
1
T
4
T
7
T
3
T
6
T
9
T
8
T
5
T
2
Volts U V W
T
1
-T
7
T
2
-T
8
T
3
-T
9
low T
4
-T
5
-T
6
T
1
T
2
T
3
high
Connected
together
Connection
T
1
-T
7
T
2
-T
8
T
3
-T
9
Y Y
Y
U V W
T
1
-T
6
-T
7
T
2
-T
4
-T
8
T
3
-T
5
-T
9
-
T
1
T
2
T
3
T
4
-T
7
T
5
-T
8
T
6
-T
9
∆ ∆
∆
T
1
T
4
T
7
T
2 T
5
T
8
T
3
T
9
T
6
Volts
low
high
Connected
together
Connection
e.g.: Volts 230 V YY (low) / 460 V Y (high)
Fig. 3-18 Motor terminal box
The following must be noted when entering the rating plate data or the ESB data:
The rated motor voltage P0304, the rated motor current P0305 and the stator
resistance P0350 must always be entered in accordance with the motor circuit
configuration (either delta or star).
If the rated motor data that is available (P0304, P0305, P0350) does not match
the motor circuit configuration, then the appropriate conversion (refer to Fig.
3-19) must be made and then entered.
NOTE
The outer conductor voltage/phase-to-phase voltage (voltage U
12
between outer
conductors L1, L2) and the outer conductor current (phase current) I
1
are always
specified on the rating plate.