Pressure Setpoint From Robot Interface; Gun Compensation Control Via Mgdm Output Xgm3 (Pressure) - Bosch Rexroth PRC 7 00-L-0301-Serie Typspezifische Anleitung

R911405013 | PRC 7x00-Lx/Wx-0301 Bosch Rexroth AG | Electric Drives and Controls
Time of reduce ms
pressure
(Equalizing: Off)
9.3.3

Pressure setpoint from robot interface

• The setpoint of the compensation pressure with active gun compensation at the
welded part is specified via the robot interface.
• The format is a two's complement with a length of 16 bits.
• Thus, positive and negative pressure setpoints can be transferred.
• The weighting is 305μ Bar / Digit.
(decimal value 32767 ≙ 10Bar, decimal value -32767 ≙ -10Bar).
9.3.4

Gun compensation control via MGDM output XGM3 (pressure)

• The analog output of the MGDM can accept voltages from 0...10VDC.
• The weighting of the set pressure of -10Bar....+10Bar corresponds to a voltage
value of 0V...+10V at output XGM3.
Example of gun compensation control via MGDM
Tab. 8:
Target pressure
-10 bar
0 bar
+10 bar
• If range overruns result from the parameterization, these values are limited to
the permissible voltage range.
• The pressure output is pressurized with the set pressure of the reset pressure
as soon as the gun number has been read from the MGDM.
• If the BUS connection to the MGDM is interrupted, the last pressure setting is
frozen until the connection is reestablished.
Fig. 4: MGDM XGDM3 connection
Important note:
Time within which the pressure reduction
takes effect.
Voltage at XGDM3
0V
+5V
+10V
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