Pin Assignment (Parallel Operation) - Bosch Rexroth RA 10 Series Instruction Manual

32/48 Analog amplifier RA | Installation
Table 7: Pin assignment RA2-1
Signal Description
Outputs
PWM 1 out Proportional solenoid output outputs (solenoid 1)
PWM 1 Ground for proportional solenoid 1
Feedback
PWM 2 out Proportional solenoid output (solenoid 2)
PWM 2 Ground for proportional solenoid 2
Feedback
Notice:
The PWM solenoid return lines do not have to be returned to the analog amplifier.
Dig Out Switching output
ERR Ind Out Error output.
The output is active if:
• voltage supply at pin 19 and/or pin 20 falls below approx. 9 V
• the external sensor supplies (8.4 V and 4.0 V) are faulty
• the circuitry at pin 16 and pin 23 is faulty
V mid ext 1 Sensor or potentiometer supply voltage 4.0 V
V pos ext 1 Sensor or potentiometer supply voltage 8.4 V
V mid ext 2 Sensor or potentiometer supply voltage 4.0 V
V pos ext 2 Sensor or potentiometer supply voltage 8.4 V
Table 8: Pin assignment (parallel operation)
Signal Description
Inputs
Parallel operation Connected with +U
Notice:
If the connection is interrupted, only one output stage is controlled.
Potentiometer 1 Function of pins:
Potentiometer 2 16, 23:
3, 11:
2, 12:
Differential inputs:
17, 22:
4, 10:
The voltage difference is used to generate command values. In order to obtain a maximum
command value, a voltage difference of 4 V has to be applied at the inputs of the differential
amplifier.
Bosch Rexroth AG, RE 95230-B/2021-12-01
7�4�5 Pin assignment (parallel operation)
The following table shows the important pin assignments for parallel operation.
The other pins are to be wired according to Table 7 "Pin assignment" on page 31.
: parallel operation, independent control of both solenoids.
Bat
8.4 V internal voltage
4 V internal voltage
Signal ground
inverting input
non-inverting input
Pin
1
14
13
25
7
15
3
16
11
23
Pin
9
17, 16, 4, 3,
2, 23, 22, 12,
11, 10