AB Quality Allen-Bradley 1394, Руководство пользователя

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Publication 1394-5.0 — May 2000
9-2 Troubleshooting
Understanding How to Detect a
Problem
When a drive fault occurs, the LED on the front panel changes and a
fault message appears.
The majority of 1394 faults cause the DROK contact to operate. If a
drive fault occurs, you can reset the fault detection circuitry by
removing and reapplying power. However, if it is a hardware fault,
you need to correct the fault before restarting.
This material, along with the diagnostic/troubleshooting information
included with the position controller, will help you identify most
common system malfunctions and determine which module that
problem pertains to.
Understanding System and Axis
Module LEDs
The system module and each axis module has one LED visible from
the front of the module. The LEDs are labeled "Status" on all axis
modules and "Status" for GMC, Analog Servo, and 9/440 versions and
"I/O Ring Status" for the CNC Interface system. They indicate status
as follows:
For this module: For this LED:
Status of the
LED:
Potential Cause: Possible resolution:
GMC Turbo,
GMC or Analog
Servo System
Module Status Steady red Malfunctioning system module.
• Verify wiring.
• Secure wiring connections.
• Replace the module.
• Contact your local Allen-Bradley Support
Representative.
Flashing red A fault has occurred in system.
• Verify wiring.
• Secure wiring connections.
Alternating
red and
green DC bus is not up.
• Apply three-phase power.
• Check DC bus LED.
Open fuse or malfunctioning
contactor on user-supplied 3 phase
input.
• Check wiring to start/stop circuitry.
• Check fuse.
Malfunctioning system module.
Replace the module.
Steady green The bus is up and axes are enabled.
None needed.
Flashing
green The bus is up, but no axis is enabled
(Analog Servo only).
• Check axes and enable them, if necessary.
• Verify that enable wiring is correct and not
open.
Enable signal from position
controller is not present (Analog
Servo only).
• Check axes and enable them, if necessary.
• Verify that enable wiring is correct and not
open.
• Check connections on input wiring board.
Position controller has detected a
machine system malfunction and
will not enable the 1394 (Analog
Servo only).
• Check position controller.
• Check the machine.
• Check the enable status at the Analog Servo
wiring board.
System enable is not powered (GMC
only).
• Check the enable status.
• Check for 24V DC on system enable signal,
TB1 and TB2 (refer to the chapter Wiring
1394 GMC and GMC Turbo Systems, Figure
4.1 and Figure 4.2).
Not
illuminated There is no power to the system
module.
Check the power supply to the system module.