Troubleshooting Guide - Distech Controls ECL-PTU Series Installation Manual

Troubleshooting Guide

Controller is powered but does not turn on
Fuse has blown
Controller cannot communicate on a BACnet MS/TP network
Network not wired properly
Absent or incorrect network termination
Too many Allure EC-Smart-Vue sensors are
providing network access
Controller communicates well over a short network, but does not communicate on large network
Network length
Wire type
Network wiring problem
Absent or incorrect network termination
Extra capacitance
Number of controllers on network segment
exceeded
Network traffic
Hardware input is not reading the correct value
Input wiring problem
Open circuit or short circuit
Configuration problem
Over-voltage or over-current at an input
Hardware output is not operating correctly
Fuse has blown (Auto reset fuse)
Output wiring problem
Configuration problem
0 to 10V output, 24VAC powered actuator is not
moving.
Wireless devices not working correctly
Device not associated to controller
Power discharge
Device too far from controller
Configuration problem
Rx/Tx LEDs
RX LED not blinking
TX LED not blinking
Status LED– Normal Operation
One fast blink
Fast blink continuous:
(150ms On, 150ms Off, continuous)
20 / 21
Disconnect the power from the controller. Check the fuse integrity. Reconnect power to the controller.
Double check that the wire connections are correct.
Check the network termination(s).
Disable the Net to Subnet Port Settings jumpers on all controllers. If communications are re-established, re-enable only a
few Allure EC-Smart-Vue sensors to have network access.
Check that the total wire length does not exceed the specifications of the Junction Box and Wiring Guideline for Twisted Pair
LonWorks Networks .
Check that the wire type agrees with the specification of the Junction Box and Wiring Guideline for Twisted Pair LonWorks
Networks .
Double check that the wire connections are correct.
Check the network termination(s). Incorrect or broken termination(s) will make the communication integrity dependent upon
a controller's position on the network.
Make sure that no extra capacitance is being connected to the network other than the standard FTT circuit, and a maximum
of a 3 meter stub (in bus topology).
The number of controllers on a channel should never exceed 64. Use a router or a repeater in accordance with the Junction
Box and Wiring Guideline for Twisted Pair LonWorks Networks.
Query node statistics to check for errors.
Use a LON protocol analyzer to check network traffic.
Check that the wiring is correct according to this manual and according to the peripheral device's manufacturer.
Using a voltmeter, check the voltage on the input terminal. Short circuit (0V) and open circuit (3.3 V).
Using the controller configuration wizard, check the configuration of the input. Refer to the controller's user guide for more
information.
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 the input range limits of this controller.
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.
Check that the wiring is correct according to this manual and according to the peripheral device's manufacturer.
Using the controller configuration wizard, check the configuration of the output. Refer to the controller's programming user
guide for more information.
Check the polarity of the 24VAC power supply connected to the actuator while connected to the controller. Reverse the
24VAC wire if necessary.
Using the device configuration plug-in or wizard, check the configuration of the input. Refer to the device's user guide for
more information.
1. Recharge device with light (if solar-powered) or replace battery (if battery-powered),
2. Ensure sufficient light intensity (200lx for 4 hours/day).
Reposition the device to be within the range of the Wireless Receiver. For information on typical transmission ranges, refer
to the Open-to-Wireless Application Guide.
Using the device configuration plug-in or wizard, check the configuration of the input. Refer to the device's user guide for
more information.
Data is not being received from the
Data is not being transmitted onto the
Initialization: The device is starting up.
Firmware upgrade in progress. Controller operation is temporarily unavailable. The new firmware is being loaded into
memory. This takes a few seconds. Do not interrupt power to the device during this time.
L W
data bus.
ON ORKS
L W
data bus.
ON ORKS