Electrical connection
en
Installation and operating instructions Wilo DD-I
115
4.6
LSI system mode
In the "LSI" system mode, the pumping station is completely controlled via the Digital
Data Interface. Here, a system consists of at least the following products:
ƒ
Up to four pumps, each pump with Digital Data Interface and own frequency con-
verter
ƒ
An I/O2 module
ƒ
A level sensor for the setpoint specification
Wilo-EFC
Wilo-EFC
Switch/Router
Wilo
I/O 2
HMI
ModBus TCP
ModBus TCP
STO
STO
max. 4
High water start
Start level
High water stop
Alternative start
Stop level
Alternative shut-down level
Dry run
Ethernet
Modbus
Signal cable
Sensors
Control cable
Power connection
Optional
Mandatory for
potentially explosive conditions
Fig. 12:
Connection of LSI system mode: System overview
Here, the pumping station works autonomously and does not require a higher-level
control system. For limited interaction with a higher-level controller, various functions
are available at the outputs or via fieldbus:
ƒ
System approval
ƒ
Signalling of faults and warnings
Summary of Contents for DD-I
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