13
Passive
SW10S
W
1
0
Active
20 mA Current Loop Wiring
1. Set the Communication Input Jumper (JP 1) to
LOOP
.
2. Terminate the indicator’s communication wires at the 20 mA Current Loop
terminal (J5). See table below:
INDICATOR
TO AURORA REMOTE DISPLAY
20 mA TX +
RECEIVE POSITIVE (RX +)
20 mA TX -
RECEIVE NEGATIVE (RX -)
20 mA Current Loop Mode Switch
•
After the current loop is wired, ACTIVE or PASSIVE mode must be selected (SW
10) on the Controller board.
•
Select Active mode if the Aurora is required to supply the current to the
communicating device.
•
Select Passive mode if the communicating device (indicator) supplies the current
to the Aurora.
•
If unsure of these requirements, check the device’s manual.
Fig. 11: 20 mA Mode Switch
Summary of Contents for AURORA 45
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