TA-05/C
ETA-05C.PMD PT
Misprints and technical changes reserved
TAE Antriebstechnik
Instruction & Operating Manual
9
Copyright © by T
AE Antriebstechnik
7. Troubleshooting
For fast and effective troubleshooting and for the location of defective componets pro-
ceed as follows.
Check drive for: a) Intermittent or loose connections
b) Defective insulation of connecting leads
c) Defective motor (brushes etc.)
Fault location
Drive runs unstable.
Symptom
Possible causes
a) Check supply connections (Drive-
release, Terminals 26c-28c).
b) Control v 24V missing,
check supply, LED 1 does not light
up.
a) Motor load is too high. Drive ope-
rates at current limit. LED 4 current
limit lights up.
b) Defective speed potentiometer.
c) Adjustment of current limit is set too
low.
Yellow LED 3 does not light up.
Output voltage does not increase
when speedcontrol is turned up.
a) I x R compensation is set too high
(when armature feedback control is
used).
b) Improper adjustment of stability po-
tentiometer P6.
c) Defective tachometer or tachometer
leads.
d) Wrong connection of auxiliary motor
winding.
e) Defective SCR bridge.
a) Current limit is set too low, LED 4
(current limit) lights up.
b) Motor is overloaded (mechanical de-
fect), LED 4 current limit, lights up.
Speed varies without change of
speed potentiometer.
