Instruction and Operating Manual
TA-05KB-SMD & TA-1K-SMD
We reserve the right to correct technical and printing errors
6
Drive does not run
a) defective power supply
b) check function of relay and relay wiring (control
release, terminals 7 and 8).
c) defective speed potentiometer.
d) check motor and motor brushes.
e) defective fuse Si (10A FF - TA-1K)
(16A FF - TA-1K).
Drive runs after release at maximum speed,
however adjustment is set for low speed
a) intermittent tachometer feedback or defective
tachometer.
b) check armature feedback
c) potentiometer P3, max. speed, is defective.
Drive runs after release at maximum speed wit-
hout keeping reference value (preset speed)
a) intermittent potentiometer P1, min. speed.
b) intermittent speed potentiometer or intermittent
wiring from terminal 11 to potentiometer.
Motor starts immediately when connected to
AC line, without drive being released
a) grounded armature wiring
b) defective SCR-Bridge
This concludes the preliminary preparation and adjustment of the Thyristor Drive Control
Main fuse blows
a) shorted or grounded armature or field connec-
tions, defective SCR-bridge check field-diodes.
b) defective motor or armature.
