Distech ECYPSE - Page 168

168 ECLYPSE User Guide
Symptom
Possible Cause
Solution
Open circuit or short
circuit
Using a voltmeter, check the voltage on the input
terminal. For example, for a digital input, a short
circuit shows approximately 0V and an open circuit
shows approximately 5V. Correct wiring if at fault.
Configuration problem
Using the controller configuration wizard, check the
configuration of the input. Refer to the controller’s
user guide for more information.
Over-voltage or over-
current at an input
An over-voltage or over-current at one input can
affect the reading of other inputs. Respect the
allowed voltage / current range limits of all inputs.
Consult the appropriate datasheet for controller
input range limits.
Hardware output
is not operating
correctly
Fuse has blown (Auto
reset fuse, for 24V
controllers)
Disconnect the power and outputs terminals. Then
wait a few seconds to allow the auto-reset fuse to
cool down. Check the power supply and the output
wiring. Reconnect the power.
Output wiring problem
Check that the wiring is correct according to the
module’s hardware installation manual and
according to the peripheral device’s manufacturer.
Configuration problem
With EC-gfxProgram, check the configuration of the
output; for example, is it enabled? Refer to the
EC-gfxProgram User Guide for more information.
0-10V output, 24VAC
powered actuator is not
moving
Check the polarity of the 24VAC power supply
connected to the actuator while connected to the
controller. Reverse the 24VAC wire if necessary.
Refer to the controller’s Hardware Installation Guide for how to identify and set a controller’s
configuration jumpers and switches.
Table 16-2: LED Fault Condition Interpretation for ECB Devices
ECB Device LED
Interpretation
Description
Solution
RX LED not blinking
Data is not being
received from the
BACnet MS/TP data
bus.
If there is no communication, see
Table 16-1.
TX LED not blinking
Data is not being
transmitted onto the
BACnet MS/TP data
bus.
POWER constant on
Power is available at the
device. However this
does not mean that the
quality of supplied
power is good. See
Power Supply
Requirements for
24VAC-Powered
Controllers on page 19.
If not lit, see Power Supply
Requirements for 24VAC-Powered
Controllers on page 130 for the power
requirements.
STATUS blinking
See below.
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