7
missprints and technical changes reserved
Instruction & Operating Manual
TA-15/6P...200/6P
Drive does not run when switched to "DRIVE
ON"
6.1 Fault location
Symptom
LED 8 (Power on) does not light up.
+/- 15V (LED 5, LED 2) does not light up.
Possible causes
a) Defective fuse Si 1 on the upper PC-board
b) One phase is missing
c) No supply voltage (115V) for relays d1 and d2.
Check voltage (115V) between terminals 9 and
16
d) LED 8 or D37 defect.
a) One phase is missing
b) Check power supply, m/- 24V
a) Motor load too high.
b) Drive operates at the current limit, LED 6 lights
up.
c) Current limit is adjusted too low, drive switches
off after short operation.
d) Defective speed potentiometer.
a) Check switch-on contact (terminals 1 and 9)
b) Defective fuse Si 1 on the upper PC-board
c) LED 8 (Power on) does not light up
d) LED 9 does not light up however LED 11 lights
up, jumper or quick-stop contacts terminals 24
and 25 not closed.
e) No reference voltage (terminal 2) voltage is
variable by speed potentiometer from 0 to 10V
f) Relay d6 (malfunction) not energised. LED 3,
red, lights up. Confirmation of malfunction is
only possible if LED 4 and LED 6 do not light
up and if the field control is not activated.
g) Check three phase line input.
h) Defective fuses Si 1, Si 2 or Si 3 on lower PC-
board.
i) Check field voltage and field current.
a) I x R compensation P3 is set too high.
b) Defective tachometer or tachometer leads.
c) Stability potentiometer P8 is wrong adjusted.
d) Auxiliary winding of the d.c. motor is wrong
connected
e) Triggerinig of one Thyristor temporarely
interrupted.
Output voltage does not increase when
speed potentiometer is turned up
Drive does not run stable
