Sigma_XT_signs_m3.5.docx
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3.
Power and Data Connections
Each status unit requires two cores for power and two cores for data transmission to and from the control panel.
A four core cable may be used for these connections. All of these connections are polarity conscious and care
should be taken to match the polarity with the corresponding terminals at the control panel.
Connecting Signs with RS485 Serial
3.1.1.
Connecting up to 3 Signs
For systems requiring up to 3 signs (or devices) to be installed, wiring is as follows:
Notes:
•
FIP MUST BE POWERED DOWN BEFORE ANY CHANGES TO SIGNS.
•
STATUS POWER - will support a maximum of 3 devices, including both signs and LCS.
•
For more than 3 signs, a separate power supply is required from the 24VDC output on the FIP.
•
STATUS SERIAL (RS485) - Maximum number of devices, including both Signs and LCS, for the 485
communications is 7.
