Mounting 39/76
CytroPac, RE 51055-B/02.2021,
Bosch Rexroth AG
7.5.3 Mating connector pinout: Fill level/temperature sensor, filter clogging
sensors ("Basic" configuration)
For status monitoring, the hydraulic power unit is equipped with the following
sensors:
• Fill level and temperature sensor with two switching points each:
Pin 1: 24 VDC supply
Pin 2: 24 VDC output for fill level warning (normally open contact)
Warning in case of 24 VDC
Pin 3: 24 VDC output for fill level or thermal shutdown (normally closed
contact)
Pin 4: 24 VDC output for temperature warning (normally open contact)
• Filter clogging sensor 75 %:
Pin 1: 24 VDC supply
Pin 2: 24 VDC output for filter clogging warning (normally closed contact)
• Filter clogging sensor 100 %:
Pin 1: 24 VDC supply
Pin 3: 24 VDC output for filter clogging shutdown (normally closed contact)
In "Basic" configuration, the three sensors must be wired to the higher-level machine
control system for evaluation.
In case of shutdown, the enable signal of the hydraulic power unit must be canceled.
In the "Advanced" and "Premium" configuration, the warning and shutdown signals
are internally wired and evaluated via port 16X1.
Information on the meaning of the LED signals can be found in chapter 10.3
“Warning devices“ on page 52.
The status is visualized via the flashing sequence and color of the integrated LED
strip.
Fig. 21: Fill level/temperature sensor, filter clogging sensors
P
P
Thread M12x1
-16B1
1
3
4
2
1
B4
T1
60 °C
A2
T2
65 °C
2.2
bar
1.6
bar
Fill level /
temperature sensor
Clogging sensor
filter 100 %
Clogging sensor
filter 75 %
3
4
1
3
2
Thread M12x1
-16B2
M12x1 thread
-16B3
