Bosch Rexroth PRC 7 00-L Serie Bedienungsanleitung Seite 47

R911415883 | PRC 7x00-Lx/Wx-0130 Bosch Rexroth AG 47/48
7.1.13 Status/monitorig result
When an error message is detected, it is output as status number at the PRC
outputs No. 64 through 79. Status "0" means no message.
If set point and actual values are part of this message, the percentage deviation
of the actual value from the set point value is output through the PRC outputs
„Deviation" No. 112 - 119 . In case of deviations greater than 127%, the figure
127% will be output.
7.1.14 Input „Ghost Run"
The wear counter basically are not incremented in schedules without ignition.
After execution of a schedule without ignition, all wear counters are incremented
as a schedule with ignition signal set at "Ghost Run".
NOTICE: The plant operator must ensure by dressing of electrodes that the wear
counter corresponds to the actual state of the electrode cap after finishing the
Ghost run operation.
Otherwise this could lead to problems with the stepper (KSR mode) and the
dynamic tolerance bands (UIR mode).
7.1.15 Input „Weld enable fieldbus"
For a usual operation of the input must be set.
If the input "Weld enable fieldbus" PRC input No. 15 is not set, when starting a
sequence via the serial I/O field, an error message is issued and the sequence is
aborted.
The error will not be triggered when the start comes as soft start of the user
interface.
If the input is reset during a schedule, the schedule will be carried out to the end
without error message.
The fault is not acknowledged automatically. The fault must be reset via the input
or the command "Reset error" or "Reset error set end of sequence".
A reset via the input or the command "Reset error with reweld" is only accepted
by the control, if the "Weld enable fieldbus" is set. If there is no input, neither of
the extra sequence is started nor a fault is cleared.
7.1.16 MGDM
An MGDM can optionally be connected to the controller at channel 1 (address
switch set to 1).
The following signals are processed:
• Connector XGM1 (transformer 1) and XGM2 (transformer 2) - Temperature
contact and secondary current sensor
• Connector XGM3 pressure input and output
• Connector XGM4 Secondary voltage
• Connector XGM5 Force 1