Agilent Technologies U1840A Medalist sj5000 Hardware Manual page 144

11
Troubleshooting
11-10
Conveyor 1 will not run
• Check that PLC output 100.00 is on. (All input and output
have indicator lights on the PLC.)
• Check that relay KA4 is energized.
Conveyor will not run because there is no output from PLC
• When an error occurs in the PLC, an error message will be
displayed. Check the message for the cause and the action to
be take.
Drives will not move/home/move to a given width
• Check that the motors are not slipping on their coupling.
• Check the position of the AWA sensors.
• Check that there is nothing obstructing the conveyor.
• Check that the E-Stop circuit is reset.
• Check the power to the P404 and look for indicator lights on
the P404. The middle LED should be green or orange.
• Check for 24 V DC power to P404 (stepper driver).
• Check that Q2, Q3 and Q4 are on.
• Check that KA4 (on a single rail) is on to energize all motors.
• Check whether it is the PLC that is not allowing the move.
The PLC may not allow a move if there is a board in the
machine or some of the sensors are triggered.
• Check that the three AWA sensors are working by checking
that their indicator lights are on.
• Check that the cabling of the motors is connected to the
terminals above P404 (stepper driver).
Cannot manually adjust the width of the conveyor rail
• Check that motors are not slipping on their coupling.
• Check that there is nothing obstructing the conveyor.
• Check that the E-Stop circuit is reset.
• Check that the AWA IN and AWA OUT buttons are operating by
pressing them. The PLC inputs for in/out are 00.04/00.05.
• Check the power to P404; look for indicator lights. The
middle and top LEDs should be green or orange. The LEDs
should not be red.
• Check that KA1 (on the single rail) is on to energize all
motors.
Agilent U1840A Medalist sj5000 Hardware Manual