Distech Controls ECx-400 Series User Manual

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Troubleshooting Guide
Controller is powered but does not turn on
Fuse has blown Disconnect the power. Check the fuse integrity. Reconnect the power.
Power supply polarity Verify that consistent polarity is maintained between all controllers and the transformer. Ensure that the 24VCOM terminal of
each controller is connected to the same terminal on the secondary side of the transformer. See Power Wiring [pg.5] .
I/O Extension Module cannot communicate on the subnetwork
Absent or incorrect supply voltage 1. Check power supply voltage between 24VAC ±15% and 24VCOM pins and ensure that it is within acceptable limits.
2. Check for tripped fuse or circuit breaker.
Overloaded power transformer Verify that the transformer used is powerful enough to supply all controllers. See Power Wiring [pg.5] .
Network not wired properly Double check that the wire connections are correct.
There is another controller with the same Subnet
ID on the subnetwork
Each I/O Extension Module on the subnetwork must have a unique Subnet ID. Look at the Subnet ID DIP switch on the
faceplate of each I/O Extension Module.
Network length Check that the total wire length does not exceed the specifications in the Network Guide or for the UUKL extension module
refer to the Distech Controls UUKL Smoke Control System Design Guide .
Wire type Check that the wire type agrees with the specification of the Network Guide or for the UUKL extension module refer to the
Distech Controls UUKL Smoke Control System Design Guide.
Absent or incorrect network termination Check the network termination(s). Only the last ECx-400 I/O Extension Module must have its EOL termination set to ON.
See Subnetwork Bus Topology and EOL Terminations [pg.9]. When one or more Allure EC-Smart-Vue sensors are
connected to the controller, only the last sensor must have its EOL termination set to ON. See Subnetwork Bus
Topology and EOL Terminations [pg.9].
Hardware input is not reading the correct value
Input wiring problem Check that the wiring is correct according to this manual and according to the peripheral device’s manufacturer.
Configuration problem Using EC-gfxProgram, check the configuration of the input. Refer to the EC-gfxProgram 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 the input range limits of this controller.
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 DC and an open circuit shows approximately 5V DC.
Hardware output is not operating correctly
Fuse has blown (Auto reset fuse) 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 this manual and according to the peripheral device’s manufacturer.
Configuration problem Using EC-gfxProgram, check the configuration of the input. Refer to the EC-gfxProgram user guide for more information.
0 to 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.
Rx/Tx LEDs
RX LED not blinking Data is not being received from the subnetwork bus.
TX LED not blinking Data is not being transmitted onto the subnetwork bus.
Status LED
–
Normal Operation
One fast blink Initialization: The device is starting up.
Fast blink continuous:
(150ms On, 150ms Off, continuous)
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.
The Status LED is always OFF The controller is operating normally.
Status LED blink patterns
–
Repeats every 2 seconds (highest priority shown first)
Long blink continuous:
(1s On, 1s Off, continuous)
The controller is not commissioned.
Appropriate action: Commission the controller.
Long Long Long blink
(800ms On, 300ms Off, 800ms On, 300ms Off,
800ms On)
The controller is offline.
£ Appropriate action: Verify that the:
£ I/O Extension Module’s Subnet ID Address is correctly set. See Device Addressing .
£ Subnetwork bus cable is not cut, short-circuited, or too long. See Communications Wiring .
£ Associated ECB-600 or ECL-600 has power.
For issues with the Allure EC-Smart-Vue Series Communicating Sensor, refer to the Allure EC-Smart-Vue Series Communicating Sensor Hardware In-
stallation Guide.

Distech Controls ECx-400 Series Specifications

General

Brand	Distech Controls
Model	ECx-400 Series
Category	I/O Systems
Language	English