GE Industrial Solutions ZNET901 - Manual (Page 9)

Maintenance and Testing
Troubleshooting
None of the the LEDs will illuminate:
1. Check power supply for proper con-
nection to annunciator unit. (Power
LED inside unit will be illuminated
if power supply is connected properly).
See Page 1.
Some of the LEDs not illuminating:
1. Are there less units on the network
than there are available slots?
2. Are network terminations on
remote ATS units connected?
3. Do all ATS units have power?
4. Do all ATS units have installed
network interface cards?
The position and source availability LEDs
flash on and off:
1. This indicates that network connec-
tions are open between annunciator
and corresponding ATS.
2. Are there less units on the network
than there are available slots?
3. Are network terminations on
remote ATS units connected?
4. Do all ATS units have power?
5. Do all ATS units have network
interface cards installed and net-
work cable connected?
CONTROLS, INC. R MONITOR CONTROL
AUTOMATIC TRANSFER SWITCH
ANNUNCIATOR
POSITION
NORMAL
EMERGENCY
SOURCE
NORMAL
EMERGENCY
TIME DELAY
ACTIVE
BYPASS
TEST
IN PROGRESS
INITIATE
(HOLD UNTIL TRANSFER OCCURS)
1 2 3 4 5 6 7 8
CONTROLS, INC. R MONITOR CONTROL
AUTOMATIC TRANSFER SWITCH
ANNUNCIATOR
POSITION
NORMAL
EMERGENCY
SOURCE
NORMAL
EMERGENCY
TIME DELAY
ACTIVE
BYPASS
TEST
IN PROGRESS
INITIATE
(HOLD UNTIL TRANSFER OCCURS)
1 2 3 4 5 6 7 8
CONTROLS, INC. R MONITOR CONTROL
AUTOMATIC TRANSFER SWITCH
ANNUNCIATOR
POSITION
NORMAL
EMERGENCY
SOURCE
NORMAL
EMERGENCY
TIME DELAY
ACTIVE
BYPASS
TEST
IN PROGRESS
INITIATE
(HOLD UNTIL TRANSFER OCCURS)
1 2 3 4 5 6 7 8
■ ■ Zenith Controls, Inc. ZNET900A, ZNET900B and ZNET901 Operation and Maintenance Manual (18R-1000) 7 ■ ■