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CD1-a
Chapter 7 - Troubleshooting
1.6 - "POWER STAGE" FAULT
The POWER STAGE fault groups all faults of the power stage:
o Power supply overvoltage
o Phase-earth short-circuit
o Phase-phase short-circuit
o Fan
o Power stage short-circuit
o Power stage overtemperature (on CD1-a-400/I only)
o PWM control error
o Power stage supply
o Braking system error: transistor short-circuit or cycle too high.
The VISUAL DRIVE SETUP software allows to identify the “Power stage” fault.
¾ If the failure occurs when starting the amplifier:
Check the AC voltage on the L1 - L2 - L3 inputs of the X9 connector.
¾ If the failure occurs during the operation:
Check the braking system during the deceleration phases,
Check the sizing of the braking resistor with regard to the motor deceleration phases.
Check that the current cycle corresponds to the current table (see chapter 2, part 1).
Check for no short-circuit in the motor wiring and at the motor terminals
Check for no short-circuit between one motor phase and the earth
1.7 - "RESOLVER" FAULT
¾ Check the resolver connection on the amplifier X1 connector.
¾ Check the presence of the P-RES components.
¾ Check that the resolver type is correct with regard to the P-RES components.
¾ Check the connections between the resolver and the amplifier.
1.8 - "R.D.C" FAULT
¾ If the failure occurs when starting the amplifier:
Check the values of the P-RES components with regard to the resolver transformation ratio.
¾ If the failure occurs during the operation:
Check that the motor speed does not exceed the limit speed of 20 000 rpm.
Be careful about the torque mode operation (CI command activated on X2) where the motor speed is determined
by the load.
1.9 - "I
2
T" FAULT
¾ Check the rated current value required with regard to the current table (chapter 2, section 1).
¾ Check the rated current of the amplifier defined in the Rated current parameter with regard to the current
required for the operation cycle.
CD1-a-230/I amplifier: 196 VAC < VAC < 253 VAC
CD1-a-400/I amplifier: 340 VAC < VAC < 528 VAC
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