Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 44

en-US
NOTICE
The 24 V DC power supply is not available until the digital input DI1 or DI2 has been config-
ured.
CAUTION
Overload or short-circuit
In case of overload or short-circuit of the 24 V connection with GND, all input functions will
fail (analog inputs and digital inputs).
The input functions will be available again when the overload or short-circuit situation is re-
solved.
CAUTION
Overvoltages destroy the electronics
Analog 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!
7.8 Bus Wilo Net (green terminal block)
Wilo Net is a Wilo system bus used for establishing communication between Wilo products:
• Two single pumps as a two-pump system in the Y-piece or one twin-head pump in a twin-head pump
housing
• Several pumps used with Multi-Flow Adaptation control mode
• Wilo-Smart Gateway and pump
In order to establish the Wilo Net connection, the three H, L, GND terminals must be wired with a communi-
cation cable from pump to pump. Use shielded cables for cable lengths ≥ 6½ ft.
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 shielded CAN bus cable
and an EMC-compatible cable entry for the Wilo Net cables. The screen must be connected to ground on
44 Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10