Operating instructions

81
• check voltage at terminal X1.1 and X1.2 of the control device A70
• check semiconductor fuse and the fuses F2 and F3 on the controller card A1.
CAUTION
In any case, set the device de-energized and check if it is de-energized
Terminal X1.3 on the controller card A1 not connected.
• if the semiconductor fuse is defective, then the following parameters must be checked in case of
transformer load for the operating modes TAKT and SSSD:
phase angle of the first half-wave (phase angle 1) = 60 degrees;
possibly optimize. Check for the model type 1P, 2P or 3P
Menu: Parameters/Operating mode/Number of phases controlled 1 2 3)
No load current
• RESET X5.2.12 is not jumpered for X5.1.14 (LED ON lit in red)
• supply voltage of the control device outside of the tolerable range
• controller lock X5.2.15 is not jumpered for X5.1.14 (LED PULSE LOCK is on)
• no set point is set. Using the LBA-2, check the total set point (effective total), or measure set point
on X5.2.10 and X5.2.11.
- set points are not cleared
- parameterization of the set point inputs 20mA, 5V, 10V, does not matched to output of the
temperature controller
- check jumper X221 and X222 for current and voltage range
- parameters STA and STE of the control characteristic are wrong
- parameter for linkage of the set points is not set to ”ADD“
• parameters IEMA, UEMA, PMA are set too small
• controller parameters T
i
and K
p
are set too large.
CAUTION
Check fuses on the controller cards A1, A3, A5. In any case, set the device de-energized and check
if it is de-energized.
• Load connection by the customer is missing (only for type 1P).
Check connection on A1 terminal X1.3.
• Check synchronization voltage at the control device A70 at the terminal blocks X7.1 and X7.2.
The thyristors are set to full scale
• Was the set point set via motor potentiometer function? Check value using the LBA-2.
• Check the control characteristic (Control start, Control end, Addition).
• Controller feedback signal available? Check current transformer and voltage transformer
connections at the terminal blocks X7.1 and X7.2.
• Parameters Turn on-time T
s min
and Back pulse limit position, U
min
, I
min
, P
min
are larger than 0.
• Controller parameters Ti and Kp are set too small.
• Parameters I
max
, U
max
, P
max
are set too large or the load current is too small.
Measures in case of other maloperation of the device:
• Evaluation of incident register (data logger) with LBA-2 or Thyro-Tool Family.
• Checking Thyro-P parameter.
• Checking wiring of Thyro-P.
• Correct number of controlled phases (parameters).
• With activated trouble signal relay Evaluation which faults led to a response, eliminate the fault.