The comfort SIDOOR AT40 elevator door drive is an intelligent door control system which enables the opening and closing of cabin and shaft doors at adjustable speeds and accelerations.

The maintenance-free, variable speed drive unit comprises a DC motor with non-self-locking gearing.

Four different motors are available:

• SIDOOR M2 geared motor (24 V DC/1.8 A; motor for max. total door leaf weight of 120 kg)
• SIDOOR M3 geared motor (30 V DC/4.0 A; motor for max. total door leaf weight of 180 kg)
• SIDOOR M4 geared motor (30 V DC/4.0 A; motor for max. total door leaf weight of 400 kg)
• SIDOOR M5 geared motor (30 V DC/7.5 A; motor for max. overall door leaf weight of 600 kg)

They must be ordered separately, see "Geared motors".

Operation of the door drive does not require a limit switch. The door width and the "OPEN"/"CLOSE" positions are determined automatically.

The current operating states are indicated by a 7‑Segment display directly in the SIDOOR AT40 elevator door drive. They can also be displayed externally with the aid of the Software Kit or Service Tool, see "Additional Units".

Power transmission is via a toothed belt, which passes over a deflector unit and can be fitted with two door clutch holders. The accessory parts are not included in the scope of supply, see "Accessories".

This enables handling of both one-sided and centrally opening doors.