Somfy Simu DMI6 60Nm Motor Crank Override and Tube Fit

Wind takes the power down and the awning stays out over the patio. The Simu DMI6 60Nm 14rpm 120V (2001040) answers that problem with a CMO head, so a crank on a hex shaft winds the fabric in by hand while the line is dead.

The override head is the reason to pick this motor

Somfy builds the DMI6 as the manual override version of the T6 operator. Both deliver 60 Nm at 14 rpm on 120V power. The DMI6 adds a drive point on the motor head that takes a 7 mm hex extension shaft, and the crank turns the motor's own gear train. Limits hold where you set them after an override cycle. Owners with an awning over a patio door, or a shutter guarding a ground-floor window, get a way out of an outage without pulling the motor from the tube.

The head type matters for mounting as much as for cranking. Somfy publishes the head on 2001040 as CMO, which seats in a DMI bracket. LT50 and LT60 brackets will not hold it.

Awnings and shutters this motor drives

Somfy lists two applications for ref 2001040: awnings and rolling shutters. At 60 Nm the motor handles a folding-arm awning with a wide projection or a rolling shutter carrying a heavy aluminum slat curtain. 14 rpm keeps travel steady on a long drop, and the fabric lands on the same line each cycle, with a repeatability figure Somfy publishes as better than plus or minus 5.

Torque sizing follows the curtain weight and the tube diameter, not the window size alone. Somfy's DMI5 line carries the same crank override at lower torque for smaller awnings, and the DMI6 range continues above this ref at 80 Nm and 100 Nm. Pick 60 Nm when the existing motor on the job was a DMI6 660, or when the awning calculation lands between the 50 Nm and 80 Nm steps.

Verified specs

Figures above come from Somfy's own published data for ref 2001040.

Tube fit, drives and brackets

Somfy publishes a 2.37 in minimum inner diameter for the tube on this motor. The body measures 2.36 in across, with a 2.26 in external diameter at the head end. A tube tighter than 2.37 in will not take the motor, and forcing one scars the tube wall. Measure the inside of the tube, not the outside.

The drive wheel then has to match the tube profile. Somfy names the T5/T6 60mm Round Aluminum Drive (9012950) for a 60 mm round tube and the T5/T6 70mm Octagonal Aluminum Drive (9011878) for a 70 mm octagonal tube. Both are aluminum rather than plastic, which suits the load a 60 Nm motor puts through the drive teeth. Fit the drive on the motor, then set the matching crown on the idle end so the tube turns true.

Unwrapped length of 27.72 in sets the pocket you need inside the tube. Add the bracket depth to that figure before you cut.

A DMI head needs a DMI bracket. The DMI Bracket 1-Piece Round Adjustable Cast Plate (9420647) carries the motor on a cast round plate with adjustment for the head position, which earns its keep when the hood is already built and the tube center sits a few millimeters off. Somfy names this bracket for the DMI6 range.

The crank side needs a shaft. Somfy's Extension Shaft 7mm Hex L=330mm with Screw (9420659) takes the override out of the hood to a point where a hand crank or eye reaches it. Measure from the motor head to the wall line before you choose a shaft length, and allow for the ring that supports the shaft end.

Wiring and limit setting

The motor arrives with 8.2 ft of VVF cable, 4 conductors, stripped. Two legs carry up and down, with neutral and ground making the rest. A maintained up and down wall switch runs the motor, and a relay handles a group of motors on one control point. Wiring two motors to a single switch leg without a relay backfeeds the windings, so give each motor its own relay output.

Limits are mechanical with a 34-turn capacity, set on the adjustment screws at the head. Run the motor to the point you want, turn the screw until the motor stops, then test both ends twice. Mechanical limits hold through a power loss and through a crank cycle, which is why the DMI6 suits an awning that an owner may wind by hand.

At 2.5 A and 285 W the motor sits inside a standard 15 A branch circuit with headroom for a second one. Somfy rates thermal protection at 5 minutes of continuous run time, well past a full awning cycle. IP 44 and Class I insulation cover an exterior install under a hood or inside a cassette.

Parts that finish the install

Order the Somfy Simu DMI6 60Nm 14rpm 120V (2001040) with a drive, a crown, a DMI bracket for the head and the 7 mm hex extension shaft for the crank. Installers replacing a dead DMI6 660 can reuse the bracket and drive if both came from the Simu T6 line and the tube has not changed. A new build needs all four parts together, since the drive, crown, bracket and shaft each depend on the tube and the hood.

FAQ

What does the CMO head on a Simu DMI6 do?

CMO marks the manual override head. A 7 mm hex extension shaft fits the drive point on the head, and a crank or eye on that shaft turns the motor's gear train by hand. The awning or shutter moves during a power outage, and the mechanical limits stay set afterward.

Which tube does the DMI6 60Nm fit?

Somfy publishes a 2.37 in minimum inner diameter. The motor body measures 2.36 in across and the unwrapped length runs 27.72 in. Common fits are a 60 mm round tube with drive 9012950 and a 70 mm octagonal tube with drive 9011878, each paired with a matching crown on the idle end.

How many limit turns does this motor hold?

The mechanical limit switches carry a 34-turn capacity. That covers the travel of a wide folding-arm awning or a tall rolling shutter on a 60 mm tube. Set both ends on the adjustment screws at the head and cycle the motor twice to confirm the stop points.

Can one wall switch run two DMI6 motors?

Give each motor its own relay output. Two motors wired to one switch leg feed current back through the other motor's windings. A relay panel or a dedicated switch per motor keeps the up and down legs separate and protects both motors.

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