Connection
Chapter 5
45
1SFC132003M0201
5:2.1.1 External By-Pass contactor
An external by-pass contactor can be used for softstarters
size PST30...300 (built in for size PSTB370...1050).
Connect the contactor to terminals B1, B2, and B3 on the line
side and terminals 2T1, 4T2, and 6T3 on the motor side.
The terminal marking is printed on the front label.
If an external By-pass contactor is used an output relay
should be configured as TOR and be connected to the
contactor. The by-pass contactor is then activated when the
voltage reaches 100% and the current has been below 1.2 x I
e
continuously for 1 s or after a 3 s timeout.
Do not use terminals B1, B2 or B3 for the “Inside Delta”
connection. The current measurement will be wrong.
5:2.1.2 Protective earthing
Softstarters type PST85...PSTB1050 should be earthed
using the terminals as shown in Figure 5 (one connection is
sufficient).
Warning!
Do not operate machine with the grounding wire
disconnected.
1
100-250V
Stop
Start
In0
In1
Vc
50/60 Hz
2 3
4 5
6
7
8
9
10
Vp
Vp
11
K4
12
13
14
Vn
15
16
K5
17
18
19
K6
20
B1
B2
B3
1SFC132049F0001
Figure 4: Connection of external by-pass
contactor
Figure 5: Protective earthing
Содержание PST105
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Страница 10: ...Introduction 10 1SFC132003M0201 ...
Страница 14: ...Introduction Chapter 1 14 1SFC132003M0201 ...
Страница 15: ...15 1SFC132003M0201 Chapter 2 Quickstart Connection 17 Configuration 18 Start of the motor 18 Quickstart ...
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Страница 20: ...Description 20 1SFC132003M0201 ...
Страница 34: ...Description Chapter 3 34 1SFC132003M0201 ...
Страница 36: ...Mounting 36 1SFC132003M0201 ...
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Страница 42: ...Connection 42 1SFC132003M0201 ...
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Страница 120: ...Fieldbus communication option 120 1SFC132003M0201 ...
Страница 123: ...123 1SFC132003M0201 Chapter 9 Maintenance Regular maintenance 125 Service and repair 125 Maintenance ...
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Страница 189: ...189 1SFC132003M0201 Chapter 12 Diagrams Circuit diagram PST30 PST300 191 Circuit diagram PSTB370 PSTB1050 192 Diagrams ...
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