6
missprints and technical changes reserved
Instruction & Operating Manual
TA-15/6P...200/6P
11)
Current limit: In order to check the current limit the field must be disconnected, the motor must be
blocked and the field control (jumper
XI
) must be jumpered. Switch on drive and preselect speed
and adjust the requested current with P5 (current limit). The red LED 6 (current limit) must light up.
This adjustment should be performed with in 10 sec., otherwise the blocking control will become
effective. If the adjustment takes longer than 10 sec. and the bolcking control is actuated, press the
key TA to confirm the blocking. The drive will then immidiately operate at the current limit.
12)
Zero-speed control: If a controlled deceleration after normal switch-off (provided the machine
operates with positive torque) is required, jumper
VI
must be installed to make the zero speed
control operative. (zero speed control is effective above approximately 10% of the speed.)
13)
Stability potentiometer P8. This potentiometer must be adjusted so that the drive operates without
overshoot in the presset speeds.
5.2 Tachometer feedback control:
1)
Check all connections with an Ohm-meter for grounds
2)
Install required jumpers for tachometer feedback control (depending if a.c. or d.c. tachometer is
used (see page 2) terminals 19 and 20 or 11 and 20 respectively.
3)
Remove resistor R82 and also remove jumpers
VII
and
I
. The electronic circuit is now without any
potential.
4)
For all further adjustments refer to the adjustments as previously described for the armature
feedback control, however,
I x R compensation (P3) must be set fully counter clockwise.
6.
Troubleshooting
For fast and effective troubleshooting and for the location of defective components proceed as follows.
Check the drive for:
a) Intermittent or loose connections
b) Defective insulation of the connection leads
c) Defective motor (brushes etc.)
Caution!
Do not use
any
Mega-Ohm-meter, buzzer or similar test instruments.
Test instruments must be galvanically seperated from a.c. line. The electronic circuit
carries a voltage potential against ground when the drive is armature feedback
controlled (UA-controlled).
