1 689 975 254 2014-01-14| Robert Bosch GmbH
CRR 120 design | CRR 120 | 21 en
5. CRR 120 design
5.1 Overview
Fig. 1: Front view of CRR 120
1 Pressure gage Po
2 Display module
3 Valve WST 5/2 with white actuator
4 Pressure connection A
5 Pressure connection B
6 Potentiometer P2
7 Selector switch P1 / P2
8 Potentiometer P1
9 Inlet valve WAP 3/2 with red actuator
Fig. 2: Rear view of CRR 120
1 Fuse 0.5 A, slow-blow
2 Positive connection 24 V
3 Negative connection 24 V
4 Protective conductor connection (PE)
5 Compressed air connection 6.5 bar – 7 bar
Fig. 3: CRR 120 open, top view
1 Pressure control valve (ED02)
2 Pressure switch (PM1)
3 Hose Vol (2 m) as control volume
4 Terminal strip X1
5 5/2-way valve (WST 5/2)
6 Potentiometer P2
7 Display module
8 Selector switch (under Pos. 7)
9 Potentiometer P1
10 Pressure gage (Po)
11 3/2-way valve (WAP 3/2)
12 Pressure sensor (P WIKA)
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