Electrical installation
74
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Version: 2.1
eXtended Transport System
Control
Two-channel contactor switch-off
The figure below shows a wiring example of a two-channel contactor
switch-off:
3
3
3
3
4
4
4
1
1
1
2
2
2
4
4
4
3
3
1
1
1
2
2
2
Power Supply
Control cabinet earth
11
31
12 32
A1
1 R1 R3
3
A2
2
R2 R4
4
A1
1 R1 R3
3
A2
2
R2 R4
4
Power Supply
48V
X1
24V
A1
1 R1 R3
3
A2
2
R2 R4
4
A1
1 R1 R3
3
A2
2
R2 R4
4
B 16A
B 4A
2 x B 4A
24 V
DC
power supply unit
48 V
DC
power supply unit
Puls power supply unit
QS20.241 / QT20.241
QS40.481 / QT40.481
Primary fusing
See documentation on
See documentation on
Secondary fusing
2-pole 4 A circuit breaker
(5SL4204-6)
Output to module (with supply)
16 A "B" circuit breaker (Siemens 5SY6116-6)
Two-channel contactor switch-off
(Siemens 3RT2526-2BB40 + 3RT2926-1BB00)
(Self-locking of the movers according to the armature
short circuit principle)
Modules have no "Safe Torque Off" (STO) and no
"Safe Limited Speed" (SLS) function
