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    Somfy ST-30 DC Motor — Power over Ethernet (PoE) Wiring Diagram

    September 08, 2026 2 min read

    Wiring diagram for connecting a single Somfy ST-30 DC motor to a Power over Ethernet (PoE) Gateway (Part #1860326), with full pinout tables.

    💾 Download Original PDF
    Full text manual (for reference)

    Overview

    This is a Power over Ethernet (PoE) wiring diagram (Part #1860326) for connecting a single Somfy ST-30 DC motor to a PoE Gateway, showing the full signal path from the PoE switch through the gateway, adaptor cable, and motor cable to the ST-30 motor head's power and data pins.

    System Requirements

    • PoE Switch must support IEEE 802.3bt & LLDP
    • 110V AC power to the PoE Gateway (Part #1860326)
    • Network termination specified by IT integrator
    • Max distance from PoE Gateway to the last motor: 240 ft cumulative

    Cable & Connector Parts

    Part Part Number Notes
    PoE Gateway to Motor Adaptor 9025010 Included with PoE Gateway
    SDN Low-Voltage Motor Cable 9020261 14/2 + 22/3 TWS, purchased separately from motor
    Reference Liberty Cable (Non-Plenum) 9020126  
    Reference Liberty Cable (Plenum) 9020127  
    Non-Printed Female Weidmuller Connector 9025113 Purchased separately

    DC Motor Weidmuller Connector Pinout

    Male Pin # Function Female Pin #
    1 Power (+) 5
    2 Power (-) 4
    3 SDN RS485 (+) 3
    4 SDN RS485 (-) 2
    5 SDN RS485 Ground 1

    ST-30 Motor Head Power Pinout

    Pin # Function Wire Color
    1 Power (+) White with Black Stripe
    2 Power (-) White

    ST-30 Motor Head Data Pinout

    Pin # Function Wire Color
    1 SDN RS485 (-) Black
    2 SDN RS485 Ground Green
    3 SDN RS485 (+) Red

    Wiring Path Summary

    1. 110V AC feeds the PoE Gateway/Switch (must support IEEE 802.3bt & LLDP)
    2. PoE Gateway to Motor Adaptor Cable (#9025010) connects to the printed male Weidmuller connector
    3. SDN Low-Voltage Motor Cable (#9020261) carries +24V DC / -24V DC power and RS485 +/- data/ground to the motor
    4. Terminates at the ST-30 DC Motor's data and power pigtail

    Manufacturer Notice

    Copyright © Somfy Systems, Inc. This drawing is the property of Somfy Systems, Inc. The graphics, information, and specific ideas in this document are exclusive property of Somfy Systems, Inc. and must not be made public, copied, or sold without written permission.