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Theory of Operation 3M-Matic 800rf Case Sealer
5-6 Copyright 1999, 3M IPC. All rights reserved.
Table 5-1. Sequence Table Random Mode (continued)
SEQUENCE RANDOM MODE PLC VALVE ACTION OUTPUT INPUT
IF PHOTOCELL PC5 IS BLOCKED PROGRAM GOES
TO STEP 9 8
STEP 9
FOLDER ARM UNLATCH V9 MOVES UP 2
REAR FLAP FOLDER UNLATCH V10 MOVES UP 11
SIDE DRIVE ASSEMBLY LOCKS UNLATCH V2 UNLOCK 0
IF PHOTOCELL PC5 IS CLEARED PROGRAM GOES
TO STEP 10 8
STEP 10
START T4 (0.2 SEC)
IF T4 TIMED OUT PROGRAM GOES
TO STEP 11
STEP 11
SIDE DRIVE ASSEMBLIES UNLATCH V6 MOVE OUT 5
PADDLE UNLATCH V7 MOVES DOWN 6
UPPER HEAD BRAKES LATCH V1 UNLOCK 8
START T24 (0.1 SEC)
T24 TIMED OUT
UPPER PORT LATCH V4 VENTED
(HEAD RAISES) 10
IF HEAD UP REED SWITCH IS MADE PROGRAM GOES
TO STEP 12 11
STEP 12
UPPER HEAD BRAKES UNLATCH V1 LOCK 8
START T12 (0.1 SEC) NONE
T12 TIMED OUT
UPPER PORT UNLATCH V4 PRESSURE 10
RETURN TO STEP 1