Fairbanks FB2550 SERIES - Manual (Page 88)

Section 5: Input/ Output
07/2012 88 51254 Rev. 3
5.7.3. SERIAL 20 MA CONFIGURATION, CONTINUED
Do Not touch the data check box on the
screen to the left of Enable 20 mA Output.
– This turns on the 20 mA output
located at J1, which resides on the
Multi-Function Board.
– This is not required for this
Configuration Setup.
– If the check box is selected by
Enabled 1605T Remote Display Traffic Light Control, the FB2550 will
control the traffic light function.
– See also SECTION 10.1 TRAFFIC LIGHT CONTROL for other
configuration parameters which must be enabled for proper traffic light
operation.
5.7.4. SERIAL EXPANSION BOARD 20 MA WIRING (TB1)
TB1 DESCRIPTION
ACTIVE LOOP
TB1c-5 Loop Output
TB1d-1 Loop Return
PASSIVE LOOP
TB1c-3 Loop Return (External Resistor)
TB1c-4 Loop Return
TB1c-5 Loop Output
A. Typical Connections - Passive
B. Typical Connections - Active
TB1 DESCRIPTION 1605 / 1605T TB1 DESCRIPTION
TB1c-5 Loop Output 1 + 15 vdc
TB1c-4 Loop Return 7 C-Loop +
2
Jumper
8
GND
C-Loop -
TB1 DESCRIPTION 1605 / 1605T TB1 DESCRIPTION
TB1c-5 Loop Output 7 C-Loop +
TB1d-1 Loop Return 8 C-Loop -