Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
Manual, 12/2015, A5E36061895-AA
15
Terminal and block diagram
In an ET 200SP station, the AI Energy Meter 480VAC ST forms its own potential group
together with its dark BaseUnit.
General safety instructions
Danger to life due to electric shock
Touching live parts can lead to death or severe injuries.
Before beginning any work deenergize the system and the Energy Meter and short-circuit
installed transformers.
Danger to life, dangerous system conditions and material damage possible
Removing and inserting the Energy Meter under live voltage is prohibited! For this reason
the symbol "Do not Hot Swap" is located on the Energy Meter.
If you remove and insert the Energy Meter under live voltage during operation, the
transformers used can produce dangerous induction voltages and electric arcs and
dangerous system conditions can arise.
The Energy Meter may only be removed and inserted during operation if the measuring
voltages applied to the BaseUnit are disconnected at all phases at the terminals U
L1
, U
L3
,
U
L3
special current transformer terminals are used that short-circuit the transformer at
the secondary side when removed.
Use only in three-phase and AC networks
The Energy Meter is destroyed if used with direct voltage / direct current.
Use the Energy Meter solely to measure electrical variables in three-phase and AC
networks.
The Energy Meter is supplied through the terminals U
L1
and N. The required minimum
voltage amounts to 85 VAC.
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