LINK Systems OmniLink 5000 - Manual (Page 109)

8.1
Section 8 Troubleshooting
The system 5000 relies on serial communication between the operator terminal and the press control in
order to provide any diagnostic information. If this communication can not take place, the display shows
a "Communication Fault" error message. This could be caused by improper wiring from the operator
terminal to the press control, power not being supplied to the press control, the logic module not being
plugged in (check card rack diagnostic LEDs), or a fault in the operator terminal or logic board.
In addition to stop conditions caused by the press control's inputs, the system 5000 checks for both
external and internal faults. These faults cause the press control to stop immediately and further stroke
initiation is prevented until an operator presses the RESET ERROR softkey in the press control menu.
This will allow stroke initiation to continue only if the fault condition no longer exists.
Section 8.1 Error Messages
Error messages indicate an unacceptable operating condition.
While they may illustrate an external problem, they may also be caused by incorrect operation of the
control or an incorrect time setting. Any of these errors cause an immediate stop if the press is running,
and some require an operator's recognition of the event by pressing the RESET ERROR softkey.
"LMC Feed Back"
The Link Master Control Relay is turned on, but the relay contact monitor does not measure 120 VAC.
This can be caused by an external wiring path not providing 120 VAC to the LMC terminals, or an internal
fault in the relay or it's drive circuit.
"C/B Feed Back"
The Clutch/Brake relay is turned on, but the relay contact monitor does not measure 120 VAC. This can
be caused by an external wiring path not providing 120 VAC to the C/B drive (V2 and V5). If this is the
condition, both press control channels should display the same message (i.e. message appears without a
channel designator). This can also be caused by a blown fuse on the POWER CONNECTOR MODULE,
an internal fault in the relay or a fault in the relay drive circuit.
"Motion Did NOT Start"
The press control engaged the clutch dual air valve, and crankshaft motion did not exceed the minimum
strokes/minute threshold within the allowable time. This can be caused by an incorrect setting for clutch
engagement time limit or minimum speed threshold, or can indicate an external problem with the machine
such as low air pressure or excessive clutch plate clearance.
"Motion Stopped"
After an acceptable clutch engagement, motion dropped below the minimum strokes/minute threshold and
remained below for a time that exceeded that set by the motion filter. This can be caused by an incorrect
setting for the motion filter or maximum strokes/minute, or can indicate an external problem with the
machine.
"Stop Took TOO Long"