Connection Options; Analog Input (Ai1) Or (Ai2) - Purple Terminal Block; Digital Input (Di1) Or (Di2) - Grey Terminal Block - Wilo Stratos MAXO Notice De Montage Et De Mise En Service

DANGER
Electric shock!
If connecting SSM (FAULT)/SBM (RUN) conductors,
ensure separate cable routing to the SELV section,
otherwise SELV protection can no longer be guaran-
teed!
In cases of cable cross sections from 0.2 to 0.39 in (5 – 10 mm), re-
move the internal sealing ring from the threaded cable gland before
fitting the cable ➜ Fig. 24.
NOTICE
• Tighten threaded cable gland M16x1.5 at control
module with 2.5 Nm torque.
• Tighten the nut with 2.5 Nm torque to ensure strain
relief.
Integral solid state short circuit protection does not provide branch
circuit protection. Branch circuit protection must be provided in ac-
cordance with the Manufacturer Instructions, National Electrical
Code and any additional local codes.
9.4

Connection options

➜ Fig. 14
All communication interfaces in the terminal room (analog inputs,
digital inputs, Wilo Net, SSM (FAULT) and SBM (RUN)) comply with
the SELV standard.
Installation and operating instructions Wilo-Stratos MAXO /-D/-Z
Please refer to the detailed instructions online for information on
shield clamp connection.
See QR code or www.qr.wilo.com/stratos-maxo_om
9.5 Analog input (AI1) or (AI2) – purple terminal block
➜ Fig. 23
Analog input for following signals:
▪ 0 – 10 V
▪ 2 – 10 V
▪ 0 – 20 mA
▪ 4 – 20 mA
▪ PT1000
Dielectric strength: 30 V DC / 24 V AC
The analog inputs can be used for the following functions:
▪ External setpoint specification
▪ Sensor connection: Temperature sensor, differential pressure sen-
sor, PID sensor
▪ Terminal for supplying active sensors with 24 V DC
– Maximum current load: 50 mA
▪ Load analog input (0)4 – 20 mA: ≤ 300 Ω
– Load resistance at 0 – 10 V: ≥ 10 kΩ
9.6 Digital input (DI1) or (DI2) – grey terminal block
➜ Fig. 23
Digital input for potential-free contacts:
▪ 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)
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