Connection Of The Power Supply Unit; Connection Of The Pressure Reducing Valve - Bosch Rexroth VT-MRMA1-1 Operating Instructions Manual

7.6.2

Connection of the power supply unit

Whenever possible, system circuits should be engineered so that the analog
amplifier module and all connected components are always switched on
simultaneously.
From the operating voltage applied, the analog VT-MRMA1-1 amplifier module
generates the internally/externally required system voltages for
• logic
• output stage
• signal processing
• position transducer supply
A suitable power supply unit for the analog amplifier module is VTNE30-2X (see data
sheet 29929).
Table 26: Terminal assignment to the power supply unit
Terminal Pin
11
12 11 10 9
12
7.6.3

Connection of the pressure reducing valve

5 terminal connections on the amplifier module are reserved for the connection to
the pressure reducing valve. The terminal connections are assigned to the following
components of the pressure reducing valve:
• DC motor (2 supply connections)
• Position transducer (2 supply connections, 1 connection for the actual position
value)
Position command value
Actual position value
Position transducer supply
Fig. 9: Terminal connections of the amplifier module (viewed to the front)
Table 27: Terminal assignment to the pressure reducing valve
Terminal Pin
3
1 2 3 4
4
Assignment Explanation
Ground or L0 (0V) Reference potential of operating voltage
+U
+U Operating voltage
B
Position
DC motor
transducer
Assignment Explanation
- sensor Position transducer ground
+ sensor Position transducer supply
RE 30214-B/03.2019, VT-MRMA1-1, Bosch Rexroth AG
Installation
B
Main stage
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