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en
Electrical connection
116
WILO SE 2020-12
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Transfer of measured values
CAUTION! An intervention of the higher-level control system outside the defined
channels can cause the system to malfunction!
The cross-system parameters for sensors and control triggers are centrally connected
to the I/O module. The corresponding functions are assigned via the Digital Data Inter-
face.
Switch/Router
Wilo I/O 2
HMI
Ethernet
Ethernet
Modbus
Signal cable
Sensors
Control cable
Power connection
Optional
Mandatory for
potentially explosive conditions
2x inputs, freely configurable:
• Pressure
• Flow
4x inputs, freely configurable:
• Reset
• External approval
• Pump out
• Alternative start level
3x outputs, freely configurable:
• Operation
• Increasing level
• Dropping level
• Error
• Warning
• Flush cycle active
Fill level
Digital inputs
Analogue inputs
Relay outputs
Zener
barrier
Ex disconnect
relay
Frequency converter
Safe Torque off (STO)
Dry run
High water
Fig. 13:
Connection of LSI system mode: I/O2 module
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