Dynalite Hardware
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Installation Guide
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Page 17
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14
th
November 2019
www.philips.com/dynalite
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
Values
Correct Min – Max
network supply voltages:
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
Typical Data voltages with
reference to Gnd:
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
Max network supply/load
current
2 Amps
B
Mains fed load controllers and power supplies contribute power to the network.
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:
