GE Industrial Solutions ASTAT-IBP Plus - Manual (Page 27)

Symptom or Error & (Error Code) Possible Cause Measures to be taken
5. Installation
L
S
10 ohms 3 to 6V
3 to 6V
Testing
lamp
1L1 (3L2 or 5L3)
2T1 (4T2 or 6T3)
5-4
5-6. Thyristor check
Shortcircuit
Use a testing lamp to check the defective power module between input and output phases.
If the lamp goes on, at least one of the thyristors has a short circuit.
With a tester, check the value or the R resistance between input and output of the same phase
(connector B on main PCB must be previously removed).
If R < 50K
Ω , at least one of the thyristors is defective.
Open thyristor
With the simple assembly shown, the lamp should light when the S switch is closed and remain
lit when open.
If not, the thyristor is defective.
Check 1L1 phase
Check thyristor module
Check ground connections and voltage to ground
Poor ribbon cable connection
Restart equipment and check for an appreciable
loss in motor speed at any time
Check IC1 and IC8 are correctly inserted in their sockets.
Check for noise on control voltage power or line
Verify overload conditions during starting time and
steady state.
Check settings in parameters "Nxxx", "Lxxx", and "oxxx"
Synchronism loss (Ex13)
Phase A, B, C thyristor (Ex14)
(Ex15)
(Ex16)
Heatsink thermostat (Ex17)
Motor thermistor (Ex18)
Phase A, B, C loss (Ex19)
(Ex20)
(Ex21)
Stalled rotor (Ex22)
Check 2T1, 4T2 and 6T3 phases No output phases
Short circuited thyristor
Phase 1L1 lost
Check for adequate ventilation
Check thermostat and wiring Heatsink thermostat tripped by overheating
or defective
Check thermistor and wiring, if no thermistor
terminal 5 and 6 must be jumpered Motor thermistor tripped by overheating or
defective
Check power wire harness for 1L1, 3L2,
5L3, 2T1, 4T2 and 6T3 No input / output phases
Verify gate and cathode wire
harness. Verify thyristors Defective thyristor or ribbon wire harness
loose or defective
Equipment detected stalled motor rotor
Internal error (Ex23)
Long start time (Ex25)
Micro-controller malfunction
Increase current limit and / or acceleration
ramp time Current limit condition present more than
2 x ta sec. or 240 sec.
(ta = acceleration ramp time)
Lock-out (Ex27) Check if settings are correct
This protection may be disabled The time between startings is less that the
adjusted in parameter "LKxx"
Undervoltage (Ex28)
Overvoltage (Ex29)
Check if settings are correct.
This protection may be disabled The line voltage exceeds of limit set in
parameters "UVxx" or "OVxx"
Undercurrent (Ex30)
Overcurrent (Ex31)
Check if settings are correct.
This protection may be disabled The motor current exceeds of limit set in
parameters "UCxx" or "OCxx"
Excessive load or excessive current during
starting Overload trip (Ex11)
Check 1L1 phase and/or mains frequence No 1L1 phase or frequence is out of range Frequency error
(admits 45Hz
≤ f main ≤ 65Hz) (Ex10)