Rockwell Automation 1771-PM , D17716.5.18 U MNL 1771-PM CLUTCH/BRAKE MOD - Manual (Page 105)

Troubleshooting
Chapter 7
7Ć21
CAM LIMIT SWITCH Ć NEAR BOTTOM ZONE MESSAGES (cont'd)
HEX
CODE
TYPE PROBLEM CORRECTIVE ACTION
09C
09D
L BRAKE MONITOR CAM SWITCH BOUNCED OR MOTION
REVERSED"
(ALT CHASSIS)
During single stroke or continuous mode, only forward motion is
allowed. This message occurs when the PM sees a transition to
upstroke (runĆon cam on, brake monitor cam off) and then sees
the brake monitor cam come back on, before the runĆon cam
opens.
See Standard Corrective Action **. Also check for proper
clutch operation.
CAM LIMIT SWITCH Ć UPSTROKE MESSAGES
09E
09F
0A0
0A1
L BRAKE MONITOR CLOSED WHEN RUNĆON CAM SWITCH
OPENED"
LOCAL BRAKE MONITOR CLOSED WHEN REMOTE RUNĆON
CAM SWITCH OPENED"
REMOTE BRAKE MONITOR CLOSED WHEN LOCAL RUNĆON
CAM SWITCH OPENED"
REMOTE PM'S BRAKE MONITOR SIGNAL IS ON WHEN
REMOTE PM'S RUNĆON CAM SIGNAL IS OFF"
The PM saw that the press was in a upstroke (runĆon cam on
and brake monitor cam going off), and then saw an incorrect
zone transition to downstroke (runĆon cam off and brake monitor
cam on), without going through the near top zone.
See Standard Corrective Action **
0A2
0A3
L BRAKE MONITOR CAM SWITCH CLOSED SHOWING
REVERSE MOTION"
(ALT CHASSIS)
During single stroke or continuous mode, only forward motion is
allowed. The PM saw that the press was in an upstroke, and
then saw an incorrect zone transition back to the near bottom
zone.
See Standard Corrective Action **. Also check for proper
clutch operation.
CAM LIMIT SWITCH Ć TRANSITION TO NEAR TOP ZONE MESSAGES
0A4
0A5
L BRAKE MONITOR CAM SWITCH CLOSED"
(ALT CHASSIS)
The PM logic was momentarily in a zone transition state
between the upstroke and near top zones. Before being able to
fully transition to the near top zone, the brake montior cam signal
came on, signaling instead, a zone transition to downstroke.
See Standard Corrective Action **. Also check for a
possible brake problem.