Wilo -Stratos MAXO-D Einbau- Und Betriebsanleitung Seite 146

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• 0 – 10 V
• 2 – 10 V
• 0 – 20 mA
• 4 – 20 mA
• PT1000
Technical data:
• Analogue input load (0) 4 – 20 mA: ≤ 300 Ω
• Load resistance at 0 – 10 V, 2 – 10 V: ≥ 10 kΩ
• Dielectric strength: 30 V DC / 24 V AC
• Terminal for supplying active sensors with 24 V DC – maximum power load: 50 mA
NOTICE
For more information, see "Application and function of the analogue inputs AI1 and AI2"
section of the Stratos MAXO user manual (see QR code at the beginning of these installation
and operating instructions).
CAUTION
Overload or short-circuit
In case of overload or short-circuit of the 24 V connection, all input functions will fail (ana-
logue 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
Analogue and digital inputs are protected for overvoltages up to 30 V DC / 24 V AC. Higher
overvoltages destroy the electronics.
7.6 Digital input (DI1) or (DI2) - grey terminal block
The pump can be controlled with the following functions via external potential-free contacts (relay or
switch) at the DI1 (terminals 31 and 33) or DI2 (terminals 41 and 43) digital inputs:
• Not used
• External OFF
• External MAX
• External MIN
• External MANUAL
• External key lock
• Heating/cooling switchover
Technical data:
• Maximum voltage: < 30 V DC / 24 V AC
• Maximum loop current: < 5 mA
146 Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.01/2023-02