Fault Finding; Electrical Characteristics; Unresponsive Devices - Philips dynalite Installation Manual

Fault finding

After completing the power up tests, all controllers should react to a single button push message. If not, check for
any discrepancies between the installation and the installation instructions and check troubleshooting symptoms.
To rectify problems, follow these five steps:
1. Analyze the symptoms.
2. Diagnose the cause.
3. Repair the problem.
4. Verify the solution.
5. Prevent the issue occurring again.

Electrical characteristics

If faults are occurring, one of the first things to check is the typical DyNet voltages. Incorrect voltages may indicate
short/open/crossed circuit or the need for an additional power supply.
Electrical Property
Correct Min – Max
network supply voltages:
Typical Data voltages with
reference to Gnd:
Max network supply/load
current
Mains fed load controllers and power supplies contribute power to the network.
B
Gateways, button panels, dry contacts and sensors consume power from the network.

Unresponsive devices

If the controls are not responding as expected, follow the procedure below to isolate the fault.
Isolate a fault in the network:
1. Find the midway point of the spur.
2. Break the network into two halves at a field device (user interface or sensor) and power both halves.
3. Perform power-up tests (refer to page 11) in each half of the network; this will identify which half has the
problem.
4. Continue to break the half into quarters etc. Repeat power-up tests until you have found the fault.
If you are still unable to rectify the fault, make a list of device model numbers used in the system and contact
technical support, contact:
14 th November 2019
Values
European (EU): measurement of 12 to 18 V between Gnd and +12 VDC terminals
North American (NA): 20 V to 26 V between Gnd and +24 VDC terminals
D- between 0.2 VDC to 1.0 VDC
D+ between 0.5 VDC to 3.8 VDC
D- to D+ must be greater than 300 mV
2 Amps
support.controls@signify.com
Dynalite Hardware
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Installation Guide
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Page 17
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www.philips.com/dynalite