5 Disconnect the AC power to the inverters/SMIs.
► To regain system normal operation:
1 Release the emergency stop button.
2 Turn ON the AC power.
3 Do one of the following:
If you set the Clear Alarm Mode in the firefighter gateway to Automatic (refer to Connecting and
Configuring an Emergency Stop Button to the Gateway on page 16), check the firefighter gateway
main status screen displays the status PV Normal Operation.
If you set the Clear Alarm Mode in the firefighter gateway to Manual, do the following:
a. Enter Setup mode, as described in Setup Menu Options on page 29.
b. Select Fire Safety Clear Alarm Yes. the following is displayed:
C l e a r i n g A l a r m …
c. If the alarm was cleared, the following is displayed:
A l a r m C l e a r e d
If Failed is displayed, check that you have unlocked the emergency stop button.
4 On the firefighter gateway LCD, check the main status screen. A message similar to the following
should appear:
P V N o r m a l O p e r a t i o n
0 0 3 / 0 0 3 D e v . O N
0 0 0 / 0 0 0 D e v . S a f e
M a x . V D C : 1 6 4 V
5 If there is no communication between slave inverters and the master gateway, clear the alarm from
the inverter, as follows:
a. Enter Setup mode in the inverter LCD menu.
b. Select Maintenance > Clear Alarm.
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