Bosch Rexroth VT-MRMA1-1, Руководство по эксплуатации

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38/52 Commissioning
Bosch Rexroth AG , VT-MRMA1-1, RE 30214-B/03.2019
8.1.3 Measuring signal and measuring point selector switch
Test jack v is provided for checking various command and actual values and ramp
times (for changing the measuring point switch over, use a screwdriver with a blade
width of approx. 2.5 mm).
Measurements on the amplifier module may only be taken using measuring
instruments with an internal resistance of (Ri) > 100 kΩ!
Fig. 17: Measuring point selector switch
Test jack: 0 to +10 V ±2 %
I
max
= 2 mA
Depending on the selected measuring point selector switch position (see table
below), a certain measured signal can be output at test jack v:
Table 32: Measuring signals
Switch position Measuring point Measuring signal at test jack v
0 Pressure command value wP 0 % = 0 V
100 % = 10 V
1 Actual pressure value xP 0 % = 0 V
100 % = 10 V
2 Valve position command
value wS 0 % = 0 V
100 % = 10 V
3 Actual valve position value xs 0 % = 0 V
100 % = 10 V
4 Ramp times “up” t < 10 mV to 10 V
5 Ramp time “down” t > 10 mV to 10 V
Fixed potentials for orientation
6 No function 0 V
7 No function < -10 V
8 No function < -10 V
9 No function < -10 V
8.1.4 LEDs
A total of 3 LEDs on the front panel of the amplifier module provide information
about the states of the amplifier module:
• Readiness for operation (green)
• Cable breaks of the pressure transducer cables (red)
• Enable for position controller and output stage (yellow)
Measuring
signal
Load zero
Measuring point selector switch (position 0 - 5 valid)
Technical data
Measuring point selector
switch