Terminal Strip X1 - Bosch CRR 120 Repair Instructions

en 24 | CRR 120 | CRR 120 design
5.4

Terminal strip X1

Fig. 6: CRR 120 electrical connection, terminal strip X1
1 Row 1
2 Row 2
3 Row 3
4 Link
No. Row 1
1
2 Pressure switch, mechanical
3 Protective conductor, supply, back
of housing
4 Pressure switch, mechanical
5 Pressure switch, mechanical
6 Pressure switch, mechanical
7 Pressure sensor, electr. 24 V, Pin 1
8 Potentiometer P1, start (3)
9 Switch com
10 Protective conductor, cover
11 Pressure sensor, electr. 0 V, Pin 3
12 Potentiometer P1, end (1)
13
14 Potentiometer P1, wiper (1)
15 Switch NO
16 Pressure sensor, electr. signal, Pin 4 Black
17 Pressure sensor, electr. not used,
Pin 2
18 Pressure sensor, electr. protective
conductor
Fig. 7: CRR 120 terminal strip X1_terminal assignment
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1 689 975 254 2014-01-14
Cable color Row 2
Brown 24 V from fuse F1
Green/yellow
Blue
White
Black
Brown Display module +24 V
Potentiometer P2, start
(3)
Green/yellow
Blue Display module +0 V
Potentiometer P2, end
(1)
Display module signal -
Switch NC
Potentiometer P2, wip-
er (2)
Display module signal +
White
Green/yellow Protective conductor,
front panel
Link Row 3
24 V
24 V EDO2 24 V
EDO2 10 V off
EDO2 setpoint
EDO2 protective con-
ductor
0 V EDO2 0 V
0 V 0 V from negative con-
nection
0 V
Protective conductor,
base plate
Robert Bosch GmbH
Cable color
Brown
Black
White
Blue
Blue
Green/yel-
low