STEP EXCITE: Service & maintenance manual - rev. 1.4
Page 6.20
6.8. THERE IS NO RESISTANCE
The machine will not produce resistance if:
• the display board is not receiving a speed signal;
• the brake board is not generating current;
• the brake is defective.
Does the brake board supply
current to the brake winding?
THERE IS NO
RESISTANCE
Are the Watt and SPM values
shown on the display dif f erent
from zero?
NO
YES
1
Carry out the "SPM value
is incorrect"
troubleshooting procedure
Replace the brake board
YES
Does the brake winding receiv e
current from the brake board?
NO
Replace the brake winding
YES
Replace cable ELT-02
NO
2
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) Disconnect the brake winding and measure the current output by the brake board with a load
of at least 5 Ohm and 80 Watts. The value should be different from 0 A.
(2) As for step (1) but with everything reconnected, and across the brake winding.
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