Rockwell Automation 1771-PM , D17716.5.18 U MNL 1771-PM CLUTCH/BRAKE MOD - Manual (Page 104)

Troubleshooting
Chapter 7
7Ć20
CAM LIMIT SWITCH Ć TRANSITION TO NEAR BOTTOM ZONE MESSAGES
HEX
CODE
TYPE PROBLEM CORRECTIVE ACTION
090
091
L BRAKE MONITOR CAM SWITCH OPEN"
(ALT CHASSIS)
The PM logic was in a momentary zone transition state between
downstroke and near bottom zones. Before being able to fully
transition into the near bottom zone, the brake monitor cam
turned off, signaling instead, a transition to the upstroke.
See Standard Corrective Action **
092
093
L RUNĆON CAM BOUNCED OR MOTION REVERSED"
(ALT CHASSIS)
During single stroke or continuous mode, only forward motion is
allowed. When the press is in the near bottom zone, the brake
monitor cam and the runĆon cam switches are closed. The PM
then sees the runĆon cams open before the brake monitor
opens, signaling a reverse back to the downstroke position.
See Standard Corrective Action **. Also check for proper
clutch operation.
CAM LIMIT SWITCH Ć NEAR BOTTOM ZONE MESSAGES
094
095
096
097
L BRAKE MONITOR AND RUNĆON CAM SWITCHES BOTH
OPEN"
LOCAL BRAKE MONITOR AND REMOTE RUNĆON CAM
SWITCHES BOTH OPEN"
REMOTE BRAKE MONITOR AND LOCAL RUNĆON CAM
SWITCHES BOTH OPEN"
(ALT CHASSIS FOR 094)
The PM is presently in the near bottom zone of the stroke (runĆ
on and brake monitor cam switches on). This message occurs
when the PM sees an incorrect transition directly to the near top
zone (runĆon and brake monitor cam switches off), without going
through the upstroke.
See Standard Corrective Action **
098
099
L RUNĆON CAM SWITCH OPEN SHOWING REVERSE
MOTION"
(ALT CHASSIS)
During single stroke or continuous mode, only forward motion is
allowed. This message occurs when the press is in the near
bottom zone, and then the runĆon cam switch opens before the
brake monitor cam opens, signaling reverse motion.
See Standard Corrective Action **. Also check for proper
clutch operation.
09A
09B
L RUNĆON CAM SWITCH OPEN"
(ALT CHASSIS)
The PM logic was momentarily in a zone transition state
between the near bottom and upĆstroke zones. Before being
able to fully transition to the upstroke, the PM saw the runĆon
cam signal go off.
See Standard Corrective Action **