AEG Thyro-A Operating Instructions Manual page 81

• Check wiring:
• Check if the wiring of terminal X1.1 is correct, that the mains is con-
nected to terminals U1 (V1, W1 if present) and the load is connected
to U2 (V2, W2). In the case of incorrect wiring it may be that the
device only works with small setpoint values and switches to failure
with larger setpoint values.
• Check load of the output:
• Check the load at the 5V DC output. Minimum resistance: Rmin =
5kOhm.
• Check all parallel load resistors for current flow.
Error: Load current flows without triggering
• Check „Live Zero":
• Check the alignment of the control characteristics (U, I, live Zero). If
the input is set to 0-20mA, but the setpoint value however is 4-20mA,
then the controller will always adjust.
• Check thyristor for short circuit:
• Check if a pulsed amount of DC is outputted. Test device with a test
load: e.g. 100W light bulbs single phase / in star connection.
81
EN