1
5
9
3
7
11
2
6
10
4
8
12
13
14
1
3
6
5
7
Output
Manual
Bypass
Bypass
Input
Main
Input
Q4
Q3
Q2
Q1
Q2
Q3
Q4
Q1
28
9-6 Shutdown Procedure (Single UPS)
(continued)
To transfer the critical load to NORMAL mode from Manual
Bypass:
1. Confirm the UPS is in MANUAL BYPASS (the MANUAL
BYPASS circuit breaker
Q3
is ON; the OUTPUT
Q4
, BYPASS
INPUT
Q2
and MAIN INPUT
Q1
circuit breakers are OFF).
2. Turn ON the BATTERY BREAKER (on the SU20KX and
SU40KX units, the BATTERY BREAKER is on the back of
the UPS; on the SU60KX and SU80KX units, the BATTERY
BREAKER is on the back of the battery cabinet).
3. Turn ON the BYPASS INPUT circuit breaker
Q2
(the amber
Bypass LED should come on and the LCD will display “Load
Unprotected-On Manual Bypass).
4. Confirm the amber BYPASS LED is ON. Do not proceed if it is
not ON.
5. Turn ON the OUTPUT circuit breaker
Q4
.
6. Turn OFF the MANUAL BYPASS circuit breaker
Q3
. The LCD
will display “Load Unprotected-On Auto Bypass”.
7. Turn ON the MAIN INPUT circuit breaker
Q1
. The Power
Module fans will turn ON.
8. Press and hold the green ON button until the UPS beeps, then
release the button. The UPS will perform a self-test diagnostic and
the LCD will display “Self Diagnosis”. After the UPS self-test is
completed, the UPS will transfer to NORMAL mode (green LED
ON and LCD displays “Load Protected-On Line Mode”).
9. Confirm there are no active alarms present (“!” on the display and
audible beeping). If an alarm is present, press the UP or DOWN
arrows to display the active alarm. Correct the action as required.
10. Scroll through the Measure Menu and confirm all input and output
power readings are within the recommended specifications.
11. If any problems are noted, contact your technical support personnel
for further assistance.
12. The critical load is now supported by conditioned battery back-up
power.
9-7 Preliminary Checklist (Parallel UPS)
Warning: Parallel configuration requires exactly two UPS systems (1+1 redundancy or capacity). Do not attempt to link more than two
UPS systems via parallel configuration. The UPS systems must have the same rating and capacity for parallel UPS installation. Attempting
to link dissimilar UPS systems will damage the UPS systems and create a serious risk of personal injury and property damage.
All circuit breaker switches should be off, including the breakers of the external battery cabinets.
•
Confirm that no voltage potential exists between Neutral and Ground.
•
Confirm that the input power source matches the rating (voltage, frequency and phase) of the UPS systems.
•
Each UPS must have a different “Parallel ID”that indicates the UPS systems are being run in parallel. See
•
Section 10-5-5
for more
details.
Note: After start-up, the UPS systems will perform a brief self-test and display the results on the LCD screen. After a successful self-test, the UPS
systems will provide AC power to the connected equipment load.
1
2
3
4
5
6
7
8
9
10
11
12
9 – Start-Up, Shutdown and Bypass
(continued)
