ABB PST30 Installation And Maintenance Manual page 26

N
L
Figure 7: Control voltage
5
Figure 8: Functional ground
Figure 9: Terminals 4, 5, 8, 9, 10, 11
5.4
1SXU 132 021 M0201
Chapter 5
Connection
5:2.2 Control voltage and control circuit
5:2.2.1 Control voltage, terminals 1 and 2
Connect the hot and neutral and phase to terminals 1 and 2.
Information!
Check that you have the correct control voltage U
5:2.2.2 Grounding, terminal 3
Connect the cable to a grounding point close to the softstarter. The cable should be as short as possible. A
suitable grounding point would be next to the softstarter on the mounting plate, see Figure 8. The mounting
plate should also be grounded.
Information!
This is not a protective ground, it is a functional ground. The grounding cable should be
as short as possible. Maximum length: 1.5 ft.
5:2.2.3 Start and Stop, terminals 4, 5, 8, 9, 10, 11
Internal control voltage
The softstarter has a built-in holding circuit which does not require any external power source for start and
stop, See Figure 10.
A conventional circuit with a HOA switch is also possible, see Figure 11.
Figure 10: Holding circuit (momentary start signal required)
1. . . . . . . . . . . . . . . . . . . . . . . . 20
.
s
Figure 11: Conventional circuit (maintained start signal required)
M3 3,5x0,6
?
0,5 Nm - 4,3 lb.in
Figure 12: Tightening torques and cable sizes
0,14 ... 2,5 mm 2
AWG 12 ... 22
0,14 ... 2,5 mm 2
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