Fault Display and Troubleshooting Information
This section provides information to guide users in understanding drive fault conditions and general troubleshooting procedures for Allen-Bradley drives. Included is a listing and description of the various drive faults with possible solutions, when applicable. For any questions regarding fault conditions, consult with the factory.
Each drive is equipped with a fault indicator light which illuminates when a fault condition exists.
Fault Code Identification
When the A-B 1336 drives encounter a fault, an LED is illuminated. Refer to Figure 45. These LEDs are viewed with the front cover removed. To view the specific fault description, the HIM (parameter unit) must be installed. Refer to HIM installation and operation.
In addition, A-B 1336 fault codes are stored in a fault buffer with the capability to store up to four fault codes. If more than four faults are identified, the least recent fault is deleted to make room for the additional fault. “Fault Buffer 0” is the most recent fault. The faults are viewed using a HIM as shown below. Refer to HIM installation and operation.
Fault Buffer 0
48
Allen-Bradley 1336-Series AC Drives
The fault parameters are identified as follows:
“Last Fault” | Parameter #4 | Most Recent |
“Fault Buffer 0” | Parameter #86 | Most Recent |
| | (same as |
| | Parameter #4) |
“Fault Buffer 1” | Parameter #87 | — |
“Fault Buffer 2” | Parameter #88 | — |
“Fault Buffer 3” | Parameter #89 | Least Recent |
NOTE: FOR A-B 1336 ONLY. During normal operating conditions (no faults present, drive running) the fault contacts at TB2-13 & 14 are open, and the contacts at TB2-14 & 15 are closed. When a fault occurs, the state of these contacts will change. On some machine models, this contact is connected to a fault indicator light.
