3.19
The queue allows the operator to run several jobs (max 5) in series. If “REPEAT” is selected the
above series will be executed the selected number of times.
Conveyor synchronization speed. (for optional driven conveyors only) Adjusting this parameter,
the conveyor speed could be synchronized with shuttle speed in automatic mode and in manual
mode, set to tandem operation.
Conveyor maximum speed. (for optional driven conveyors only)This parameter adjusts maxi-
mum speed of the conveyor in manual mode, set to separate operation.
QUEUE
CONV SYNCH SPEED
CONV MAX SPEED
PLC TROUBLESHOOTING
PROBLEM #1, for automatic models with a shuttle.
PLC is not measuring lengths.
POSSIBLE CAUSES;
1. Encoder
- Pinion gear loose on encoder shaft
- Bad encoder
2. Encoder Cable
- Bad connection at encoder or PLC
- Open or shorted wire
3. PLC unit
- Damaged hardware
4. Display unit
- No power from PLC unit
- Damaged hardware
5. Actual Length (Actual LTH)
- Perform self calibration procedure and enter value.
- Parameter value is set to 00.000
DIAGNOSIS;
1. With the machine in MANUAL mode; bring the shuttle forward to the home position and clear the length display to
read ‘0.000’. Run the shuttle, in slow speed, to the rear then back to home, moving full shuttle strokes.
i. Length should accumulate on the display as a positive number when the shuttle move away from the
blade and should count is negative going back and goes in a positive direction coming toward home, then
the green channel wire and the white channel wire should be reversed.
ii. If the display alters between 0.000 and 0.001 or 0.000 and -0.001, then one of the encoder channels is
not being recorded correctly.
2. To determine the cause, rst, check the encoder cable connections at both ends to be sure all four wires are con-
nected properly. (See page 47 for connection / wiring information)
Measure the voltage:
a. At encoder connector; - between 0 V pin and 24 V pin. This voltage should be a minimum of 22 to 26 VDC.
If the voltage is incorrect, check encoder cable continuity - if OK, possible PLC problem.
If the voltage is correct, go to step b)
b. At encoder connector, - between 0 V and channel A and 0V and channel B. This should be slightly less than sup-
ply voltage at each channel.
If voltage is incorrect at this point, check for proper continuity of these wires and repair as necessary.
NOTE:
When checking the encoder cable for continuity, each wire should also be checked for shorting to ground and shorting to
each other. If voltage to the encoder is correct; go to Step C).
c. At the encoder connection of the PLC; - between 0 V and A&B channels.
With the shuttle moving slowly, voltage should be approximately 10 -13 VDC. Input LED’s X0 and X1 should icker or go dim
with the shuttle moving. If these LED’s show no change with the shuttle moving, the encoder is likely at fault. Check that the
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