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Adjust the current limiter
on the driver board and/or
replace the driver board
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
(1)
To measure the encoder signal input to the driver board, place the tester probes between pins 5
(signal) and 6 (ground) of connector J1. To measure the encoder signal output by the driver
board, place the tester probes between pins 9 (signal) and 11 (ground) of connector J6.
(2)
To measure the encoder signal output by the driver board, place the tester probes between pins
9 (signal) and 11 (ground) of connector J6. To measure the encoder signal input to the CPU
board, place the tester probes between pins 9 (signal) and 11 (ground) of connector K4.
(3)
Place the tester probes in series with the motor cable. Press the "↑" or "↓" key: the steady-
state measured value should be less than 4÷5 A.
Page 6.36
Is there something obstructing
the movement of the machine?
YES
Does the motor draw the correct
current?
SPAZIO FORMA: Service & Maintenance manual - rev. 1.0
A
YES
NO
3
NO
Remove the obstruction
Replace the up-down
motor
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