Repair; Disconnect The Station From The Power Supply - Siemens FS720 Commissioning, Maintenance, Troubleshooting

Repair

24

Disconnect the station from the power supply

24 Repair
24.1 Disconnect the station from the power supply
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Building Technologies
Fire Safety
Work on an open ↑ 'Station', e.g., changing components, cabling, etc. must only be
performed when the 'Station' is current-free.
WARNING
Activation of fire or smoke dampers
If fire or smoke dampers are connected to the FS720 via an input/output module,
they may be activated when the station is switched off or when the station or
detector line is restarted.
● If necessary, block the outputs temporarily [➙ 81] before switching off the
station or restarting the station/detector line.
NOTICE
Connecting or removing components during operation
Damage to components
● Do not connect or remove components during operation.
You will find information about installing and uninstalling the components in
document A6V10210390. See chapter 'Applicable documents'.
1. WARNING! It is impossible to process alarms or faults if a station is
switched off! Switch the 'Station' off by performing a reset.
a The 'Station' shuts down and is switched off for several seconds.
2. Disconnect the 'Station' before the 'Station' starts up again:
– First disconnect the negative battery terminals, then the positive terminals.
– Remove the disconnect terminal block that is mounted on a DIN rail in the
housing.
a The mains connection is interrupted.
3. Exchange the components.
4. Re-insert the disconnect terminal block.
a The mains connection is intact.
a The 'Station' starts.
5. First connect the negative battery terminals, then the positive terminals.
6. Enter the date and time. To do this, select the 'Settings/administration' >
'System commands' > 'Set system time' menu items.
7. If need be, carry out partial commissioning.
Date and time are not saved in the 'Station'. The date and time must be reset to
restart the 'Station'.
A6V10210416_j_en_--
2018-08-29