Table of Contents
4.3
NT1 / NT2 / NT3 / NT24
1070 072 263-101 (01.08) GB
LED green: 5 V
lit
5 V voltage supply of the modules from the power
supply unit is available
off
5 V voltage supply of the modules from the power
supply unit is not available
LED green: ISO 12 V
lit
ISO 12 V available
off
ISO 12 V not available
LED red: Battery failure
lit
Backup battery on the power supply empty or defect
off
Backup battery is o.k.
Reset button
D Acknowledge exchange of the backup battery
D Perform load test of the backup battery
Failure contact
closed
Internal voltage supply is available
open
D Voltage failure
D Central processing unit is in STOP mode or a volt-
.
Main switch ON/OFF
Switch on mains supply
Power Supply Module
age failure has occured
Refer to jumper settings
4–5
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