Distech Controls ECL/ECB-PTU Series User Manual page 130

Symptom
Hardware input is not read-
ing the correct value
Hardware output is not
reading the correct value
128
Possible Cause Solution
Input wiring problem Check that the wiring is correct according to the module's hardware
installation manual and according to the peripheral device's manufac-
turer.
Open circuit or short circuit Using a voltmeter, check the voltage on the input terminal. For exam-
ple, for a digital input, a short circuit shows approximately 0V and an
open circuit shows approximately 3.3V. Correct wiring if at fault.
Configuration problem With EC-gfxProgram, check the configuration of the input; for example,
is it enabled? Refer to the EC-gfxProgram User Guide for more infor-
mation.
Over-voltage or over-cur- An over-voltage or over-current at one input can affect the reading of
rent at an input other inputs. Respect the allowed voltage / current range limits of all
inputs. Consult the appropriate datasheet for controller input range lim-
its.
Output wiring problem Check that the wiring is correct according to the module's hardware
installation manual and according to the peripheral device's manufac-
turer.
Configuration problem With EC-gfxProgram, check the configuration of the output; for exam-
ple, is it enabled? Refer to the EC-gfxProgram User Guide for more
information.
Network Guide