Krom Schroder IC 40 - Page 8

GB-8
D
GB
F
NL
I
E
? The drive shaft moves constantly?
! Current signal fluctuates.
• Check control loop, if possible attenuate it.
• Increase the hysteresis and filtering in BCSoft.
! 3-point step signal commands too many changes
of direction.
! Check/adjust the 3-point step controller.
? No communication possible between PC
and IC40?
! Incorrect interface used on the PC.
• Set the interface to the correct configuration us-
ing BCSoft– see page5 (Commissioning).
! Opto-adapter not positioned correctly.
• Position the magnetic head of the opto-adapter
in the circle provided.
! Optical waveguide bent.
• Carefully align the optical waveguides on the
circuit board with the marking on the housing
cover (circle).
! Housing cover not correctly secured.
• Close the housing and tighten all the screws.
! Film on the marking on cover (circle) dirty or dam -
aged.
• Clean the film; if it is damaged, replace the cover.
! Opto-adapter defective.
• Check the adapter using the BCSoft test function.
• Replace the opto-adapter.
? The parameters cannot be set in the soft-
ware?
! No writing access granted.
• Enter passcode for writing access (see BCSoft
operating instructions).
? Unit does not react to signal change– the
blue LED flashes quickly?
! The unit is in Manual mode.
• Deactivate Manual mode in BCSoft or disconnect
device from the mains.
? The motor and drive shaft of the actuator
no longer function as required?
! The gear is defective.
• Remove the unit and return it to the manufacturer.
! The selected nominal valve size is too big and
has reduced the service life of the mechanical
components due to excessive stress.
• Check the system design.
• Adjust the valve size and/or actuator.
! Gear load is too great.
• Check the torque – see page 9 (Technical
data).
? Feedback potentiometer indicates incorrect
values?
! Connections on the terminal strip mixed up.
• Check the contact assignment on the terminal
strip.
! Incorrect potentiometer utilization.
• Utilize the potentiometer as a voltage divider.
! The windings in the potentiometer are defective.
• Remove the unit and return it to the manufacturer
for inspection.
? Software problem and/or problem with set-
tings?
! Software version obsolete.
• The current software and operating instructions
can be downloaded from www.docuthek.com,
see page5 (Accessories).
? Is it not possible for the fault to be eliminated
with the measures described above?
• Remove the unit and return it to the manufacturer
for inspection.