G2-2 Series A-B 1771 Remote I/O
Quick Start Manual
Page 9
3835050 TDG22ABQS3-0
1/07
Subject to change without notice
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9) LED Functions
Upon power up, the LEDs indicate the status of the unit. There are five LEDs on the G2-2 A-B 1771 Remote
I/O node; one for Communication Status, two for internal fuse integrity, and two for Aux. Power status.
LED Name
Color
Status
Description
Off
OFF
No communication established with scanner.
ON
Communication established; Normal operation.
COMM STATUS
(Communication
Status)
Green
FLASHING
Rack size mismatch; Processor in Program Mode or loss of
communication occurred when processor lockout is ON.
OFF
Internal fuse
F1
is OK (valid only when power is applied to
+24V
VLV / OUT
pin on Aux. Power connector).
FUSE 1
Red
ON
Internal fuse
F1
is open; No power is internally provided to valves or
outputs. Communication NOT affected.
OFF
No DC Power present at
+24V
VLV / OUT
pin on Aux. Power
connector.
+24V VLV/OUT
Green
ON
DC Power applied to
+24V
VLV / OUT
pin on Aux. Power Connector.
OFF
Internal fuse
F2
is OK (valid only when power is applied to
+24V
NODE / IN
pin on Aux. Power connector.
FUSE 2
Red
ON
Internal fuse
F2
is open; No power is internally provided to node
electronics or inputs. Communication Node will not function.
OFF
No DC Power present at
+24V
NODE / IN
pin on Aux. Power
connector.
+24V NODE/IN
Green
ON
DC Power applied to
+24V
NODE / IN
pin on Aux. Power connector.
