Simplex 4100ES-S1 - SPS NAC Field Wiring Guidelines

Document: LT0400 4100ES-S1 Programming Guide
AS1668 Fan Controls
10-5
10.3 AS1668 Fan Control State Table
The following table shows how the airflow input is reflected on the AS1668 red and green
LEDs:
Airflow
Input
AS1668
Green and
Red LEDs
ON
Red ON
Green OFF
OFF
Green ON
Red OFF
The following table summarises the AS1668 amber (Fault) LED operation:
AS1668
Rotary
Switch
State
Airflow
Input
Fault
Input
AS1668
Amber LED
START
ON
OFF
Amber OFF
START
OFF
Don’t care
Amber ON
STOP
OFF
OFF
Amber OFF
STOP
ON
Don’t care
Amber ON
Don’t care
Don’t care
ON
Amber ON