Distech Controls ECLYPSE APEX, Руководство пользователя

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166 ECLYPSE APEX
Device STATUS LED blink patterns Status Description
One fast blink Initialization The device is starting up.
The STATUS LED is always OFF (Not
applicable to ECB-PTU Series)
No anomaly Normal operation.
Table 33: STATUS LED Interpretation for Normal Operation with ECB Devices
Action Recommendation
Properly terminate the BACnet MS/TP
data bus EOL terminations must be enabled / installed at either end of the data bus only. See
When to Use EOL Terminations .
Avoid duplicate MAC Addresses
Verify that no device has a duplicate MAC Address by checking the MAC Address
DIP switch settings on all devices on the data bus, including segments connected by
a repeater.
If necessary, isolate devices from the data bus to narrow-down the number of
devices that may be at fault.
All devices must be set to the same
baud rate
When all devices are set to AUTO baud rate, at least one device must be set to a
baud rate, usually the data bus master. See
Maximum Number of BACnet MS/TP
Devices on a Data Bus Segment and Baud Rate .
The data bus is polarity sensitive
Ensure that the polarity of all data bus wiring is consistent throughout the network.
See
BACnet MS/TP Data Bus is Polarity Sensitive .
Do not overload the data bus with
Change of Value (COV) reporting
COV reports create the most traffic on the BACnet MS/TP data bus. Set the COV
report rate to the largest value that provides acceptable performance. Only map
COV reports for values that are necessary. For mapped analog points that are
continuously changing, try increasing the COV increment on these points or set the
COV minimum send time flag to true to send the value at a regular frequency.
Do not leave address holes in the
device’s MAC Address range
Assign MAC Address to device starting at 3, up to 127. Do not skip addresses. Set
the maximum MAC Address in the Controller to the final MAC Address number
actually installed.
NOTE: The physical sequence of the MAC Address of the devices on the data bus is
unimportant: For example, the MAC Address of devices on the data bus can be 5, 7,
3, 4, 6, and 8.
Only daisy-chained devices are
acceptable
Eliminate T-taps and star configurations. Use a router to connect a data bus spur.
Connect no more than five devices to a
power supply transformer (for 24V
controllers)
BACnet MS/TP devices require good power quality. See Power Supply Requirements
for 24VAC-Powered Controllers .
Table 34: Verify that the Following Recommendations have been Carried Out Before Calling Technical Support
ECY Controller Troubleshooting