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Electrical connection
7.2
Power supply
7.2.1
Internal power supply
Configuration A
7-8
PST 6101.321 / PSI 6101.321
The power supply to PSI 6101.321 is completely provided by the power unit (internal sup-
ply).
PSI 6101.321 is internally supplied with 24 V DC (derived from the mains voltage). Sev-
eral jumpers have to be positioned to enable the internal power supply.
-
When the welding network is switched off, the 24 V DC supply is interrupted:
-
no communication via I/O interfaces possible
-
no communication between the timer and the programming terminal, e.g.
programming and visualization.
-
Preferably used with stand-alone systems, e.g. suspended welding stations.
-
The Stop function is ensured by means of a floating contact which is to be con-
nected to terminals X4/3 and X4/4.
-
Opening the stop contact will interrupt:
-
the firing
-
the power supply to the parallel inputs and outputs
(only outputs for PSI 6101.321)
-
the power supply to the external unit.
1070 080 056-101 (99.09) GB
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