Rockwell Automation 1771-PM , D17716.5.18 U MNL 1771-PM CLUTCH/BRAKE MOD - Manual (Page 88)

Troubleshooting
Chapter 7
7Ć4
Although the procedure for troubleshooting your clutch/brake controller
varies with each problem, use the following steps as a general procedure:
1. Examine Figure 7.2 and NO TAG.
2. Answer questions in Figure 7.2 and NO TAG until you see a
reference to another figure or table. Table 7.C lists diagnostic codes.
3. Place a bookmark at Figure 7.2 or NO TAG and go to the figure or
table that it referred to in step 2. That figure or table might contain
other references. Therefore you may need several bookmarks while
working among various figures and tables throughout this manual.
Table 7.D is your primary reference.
4. Isolate the problem using the guidelines in Figure 7.2, or NO TAG,
Table 7.C, and other references.
5. Correct the problem.
WARNING: To guard against injury to personnel or damage to
your press, open and lock the main power disconnect to turn off
all AC and DC power before:
manually turning the press shaft
adjusting or repairing any moving parts in your press
repairing or replacing any wiring in your press system,
including any field wiring arm or cable connections
replacing any electronic or electrical components, such as
clutch/brake controller and I/O modules, power supplies, or
chassis
replacing blown fuses in your press system
Diagnostic codes are specific and point to the exact input or output device
that controls PM operation. When your system is wired as outlined in this
manual, you can identify the cause of a fault as follows:
1. Review the section “Diagnostic diagnostic message codes”, below.
2. Note the diagnostic code for both PM modules
General Troubleshooting
Procedure
Troubleshooting Hints