Thyristors Are Set To Full Scale; Other Malfunctions - Advanced Energy Thyro-PX Series User Manual

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Advanced Energy
◦ Parameterization of the setpoint inputs 20 mA, 5 V, 10 V, is matched to output
of the temperature controller.
◦ Parameters of the control characteristic of the respective analog input are
correct.
• Parameters Iemax, Uemax, and Pmax are set too small.
• Controller parameters Ti or Kp are set too large.
• The load is broken or disconnected (only for type 1PX). Check connection on
A1 terminal X1.3.
• For 1PX and 2PX, units, verify that the reference phase is connected.
◦ Check A1 terminal X1.3.
◦ Check A3 terminal X1.3.
◦ Check A5 terminal X1.3.

Thyristors Are Set To Full Scale

Check the following if the thyristors are set to full scale load current without a
setpoint:
• Make sure that the motorpotentiometer setpoint is set to 0.
• Check the control characteristic of the respective analog inputs.
• Verify that parameters Ts, Uemin, Iemin, and Pmin are 0.
• Controller parameters Ti and Kp are set too small.
• Parameters Iemax, Uemax, and Pmax are set too large or the load current is too
small.
• If no load is connected the voltage will be higher than 0 V. A load must be
connected to troubleshoot this condition.
• Check the thyristor resistance between L1 and T1, L2 and T2, L3 and T3. If the
resistance is greater than 100 Ω, the thyristor is not damaged.

Other Malfunctions

Check the following for other malfunctions:
• Evaluate the fault log entries with the Thyro‑Touch display or the Thyro-Tool
Pro software.
• Check the parameters.
• Check the wiring of the unit.
• Check the number of controlled phases (parameters).
• Eliminate the fault indicated by the fault relay.
• Visually verify correct operation by replacing the loads with appropriately rated
incandescent lamps.
57010148-00G Troubleshooting and Global Services
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Thyro-PX Power Controller
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