Bus Wilo Net (Green Terminal Block) - Wilo SiFresh Einbau- Und Betriebsanleitung

8.5 Bus Wilo Net (green terminal
block)
Installation and operating instructions • Wilo-SiFresh • Ed.02/2023-08
Function control input DI 1 or DI 2
Overflow monitoring
Table 6: Function control input DI 1 or DI 2
Technical data:
• Maximum voltage: < 30 V DC / 24 V AC
• Maximum loop current: < 5 mA
• Operating voltage: 24 V DC
Operating loop current: 2 mA (per input)
NOTICE
See the "Settings menu - Manual operation" and "Application and func-
tion of the digital control inputs DI1 and DI2" sections for a description of
the functions and their priorities.
NOTICE
The 24 V DC power supply is not available until the digital input DI1 or
DI2 has been configured.
CAUTION
Overload or short-circuit
In case of overload or short-circuit of the 24 V connection with GND, all
input functions will fail (digital inputs).
The input functions will be available again when the overload or short-
circuit situation is resolved.
CAUTION
Overvoltages destroy the electronics
Analogue and digital inputs are protected for overvoltages up to
30 V DC / 24 V AC. Higher overvoltages destroy the electronics.
CAUTION
Digital inputs must not be used for safety-oriented shutdowns!
Wilo Net is a Wilo system bus used for establishing communication between Wilo products.
In order to establish the Wilo Net connection, the three H, L, GND terminals must be wired
with a communication cable from participant to participant. Use shielded cables for cable
lengths ≥ 2 m.
Connect incoming and outgoing cable in one terminal.
NOTICE
Incoming and outgoing cables must be fitted with double-wire end
sleeves.
Cable for Wilo Net communication:
To ensure interference immunity in industrial environments (IEC 61000-6-2), use a shiel-
ded CAN bus cable and an EMC-compatible cable entry for the Wilo Net communication
cables. Connect the shield to earth at both ends. For optimum transmission, the data cable
Contact open: "Overflow" detected and shown as a
warning on the display.
Contact closed: No "Overflow" detected.
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