Distech LonWorks ECL-400 Series Installationshandbuch - Seite 15
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Troubleshooting Guide
Controller is powered but does not turn on
Fuse has blown
Power supply polarity
Controller cannot communicate on the L
Absent or incorrect supply voltage
Overloaded power transformer
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
I/O Extension Module cannot communicate on the subnetwork
Absent or incorrect supply voltage
Overloaded power transformer
Network not wired properly
There is another controller with the same Subnet
ID on the subnetwork
Network length
Wire type
Absent or incorrect network termination
Hardware input is not reading the correct value
Input wiring problem
Configuration problem
Over-voltage or over-current at an input
Open circuit or short circuit
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
Disconnect the power. Check the fuse integrity. Reconnect the power.
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.
W
network
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ORKS
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.
Verify that the transformer used is powerful enough to supply all controllers.
Double check that the wire connections are correct.
Check the network termination(s).
Disable the Net to Subnet Port Settings jumpers on all controllers (for jumper location, see Figure 9). 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
L
W
Networks.
ON
ORKS
Check that the wire type agrees with the specification of the Junction Box and Wiring Guideline for Twisted Pair
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 to the Junction
Box and Wiring Guideline for Twisted Pair
Query node statistics to check for errors.
L
W
Use a
protocol analyzer to check network traffic.
ON
ORKS
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.
Verify that the transformer used is powerful enough to supply all controllers. See Power Wiring.
Double check that the wire connections are correct.
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.
Check that the total wire length does not exceed the specifications in the Network Guide.
Check that the wire type agrees with the specification of the Network Guide.
Check the network termination(s). Only the last ECx-400 I/O Extension Module must have its EOL termination set to ON.
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 the Network Guide for more information.
Check that the wiring is correct according to this manual and according to the peripheral device's manufacturer.
Using EC-gfxProgram, check the configuration of the input. Refer to the EC-gfxProgram 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.
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.
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 EC-gfxProgram, check the configuration of the input. Refer to the EC-gfxProgram 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 EC- gfx Program, check the configuration of the input. Refer to the EC-gfxProgram 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).
L
W
Networks.
ON
ORKS
L
W
ON
ORKS
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