External venetian blind motor: setting end positions and wiring

Updated: 07.11.2026

In brief: External venetian blind motors sit in the head rail and drive the lifting tapes via a double shaft. The end positions are usually electronic and are taught via a switch or transmitter sequence. The correct mounting direction is important, as is a lower end position at which the slats rest neatly.

Connection

• Cable motor (230 V): Blue N, brown and black to the interlocked blind switch, green-yellow PE – usual assignment; the data sheet is authoritative.
• Radio motor: permanent power only; operated via transmitter (868 MHz) or optionally Zigbee.
• Adding radio to a cable motor later: with a radio receiver, for the A-OK AM55 e.g. the AC268.

Setting end positions – basic procedure

1. Move the blind to the middle.
2. Activate setting mode (key sequence as per instructions).
3. Move to the upper end position and save – the slat pack must not press against the head rail.
4. Move to the lower end position and save – slats closed, bottom rail resting.
5. Test run; check tilting (slat position) if necessary.

A-OK AM55 at a glance

Which motor suits which blind size is explained in the guide External venetian blind & blind motor.

Frequently asked questions

The blind runs the wrong way – what to do?

On a cable motor swap brown and black; on a radio motor reverse the direction in setting mode.

What torque do I need?

6 or 10 Nm is enough for most window blinds; 20 Nm for very large systems.

All guides on roller shutter, awning and external venetian blind motors: Sun protection guide.

Advice on the right motor

Send us the shaft diameter, curtain size and material – we will name the right A-OK motor. Phone 040 50694631 (Mon–Fri 8 am–5 pm) or via the Contact form. All motors at a glance: Sun protection motors.