Siemens SIMATIC S7-400 Hardware And Installation Manual page 146

Starting Up
Table 6-1 Checklist to be Used Before Switching On for the First Time, Fortsetzung
Module Settings
Is the last receive IM of each connection chain terminated
with the right terminator?
Power Supply Module
Is the power supply connector correctly wired?
On AC PS modules, is the voltage selector switch set to the
available line voltage?
On fan subassemblies, is the voltage selector switch set to
the available line voltage?
Are all power supply modules switched off (Standby switch
set to )?
Is the BATT INDIC switch for battery monitoring correctly set
(see Table 6-2)?
Has the connection to the supply been made?
Line Voltage
Is the available line voltage correct?
According to the backup concept, Table 6-2 shows how you must set the battery
monitoring switch on the different power supply modules.
Table 6-2 Setting the Battery Monitoring Switch
do not use battery monitoring,
use battery monitoring with a single-width
power supply module,
want to monitor a backup battery with a
double or triple-width power supply module,
want to monitor two backup batteries with a
double or triple-width power supply module,
6-4
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If You ...
S7-400 and M7-400 Programmable Controllers, Installation Manual
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...Then
set the BATT INDIC switch to OFF.
set the BATT INDIC switch to BATT.
set the BATT INDIC switch to 1BATT.
set the BATT INDIC switch to 2BATT.
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