Choosing an Industrial Door Motor: Torque, Phase and Control Unit

Industrial motor selection starts with door mechanics, then supply, limit system and motor-board pairing. This guide helps the dealer’s technical team turn door and usage data into a documented choice against the r-tec SIRIUS sources. Related product range: r-tec industrial door motors.

In what order should the motor be selected?

1. Record door dimensions, leaf mass, spring balance and drum arrangement. Increased motor power is not a remedy for a mechanical movement problem.
2. Identify the supply. Verify the motor-label voltage separately from the control unit’s input/output ratings.
3. Identify mechanical switches or electronic encoder limits. Limit type is an initial condition for motor-board compatibility.
4. Match the exact motor and controller model/revision. A shared brand or voltage does not establish compatibility.
5. Record the peak operating window, actual opening/closing time and waiting logic. A duty percentage is not converted directly into cycles per hour.
6. Verify safety inputs, manual operation and handover manuals for that configuration. Do not finalise the package while a pairing question remains unresolved.

Torque: The force that turns the shaft

An industrial sectional operator is selected by torque and the complete door mechanics, not by a door-size label alone. The SIRIUS sheets list shaft drive and electronic limits: 10024 TCE has 100 Nm and 0.37 kW, while 14017 TCE has 140 Nm and 0.55 kW. Their speed fields are printed as 24 cm/s and 17 cm/s. These are the source units; they are not shaft rpm, and the sheets alone do not establish the speed of every installed door.

The trade-off between torque and speed

The documented torque and speed entries differ between the two models: 10024 TCE lists 100 Nm, 24 cm/s and 0.37 kW; 14017 TCE lists 140 Nm, 17 cm/s and 0.55 kW. Compare these values within the exact door, drum and control configuration rather than treating the higher number as an automatic upgrade.

Door mass, balance, height, drum and duty profile are assessed together. The sheets do not make 10024 sufficient for every standard opening or 14017 mandatory for every hangar. If partial opening is required, confirm that function and its settings for the selected controller and door.

Separate motor supply from controller input

The SIRIUS sheets publish a 380 V three-phase supply. Read controller input and motor output as separate ratings and verify the infrastructure against project data supplied by the dealer’s team. A 220 V controller input does not establish compatibility with every 380 V motor.

Phase sequence and phase loss on three-phase

Phase sequence affects motor rotation. The I-380 document describes phase sequence, phase loss, low voltage and current protection; it does not correct wiring automatically. The dealer’s team assesses warnings alongside supply and motor connections. Repeated operation while a warning persists is not a remedy.

Control unit: The motor’s brain

The same motor takes on a different character with different control units:

The 380A/encoder and I-380/mechanical-limit distinction in this list is confirmed by the product owner; it is not inferred from a general cable warning in the manual. Exact motor-board wiring must still be verified for the installed models and revisions.

• 220-K — The manual lists 380 VAC three-phase input and motor output. The 220 in the name does not indicate single-phase supply; motor, limits and board compatibility are verified separately.
• I-380 — cabinet-type three-phase control for motors with mechanical limit switches only; the manual lists 1.5 kW output, current protection, phase-sequence and low-voltage monitoring. Compatibility with the proposed NORMTOR motor and door is verified separately.
• 380A — the larger control board used with motors equipped with electrical encoders. Confirm the exact motor pairing and wiring against an approved 380A technical document.
• GIGA Sedo — display menu and documented safety connections; loop and traffic-light terminals require additional boards. RS485 labels on the wiring drawing do not establish remote multi-door management.

For high-speed PVC doors, confirm the motor-drive pairing separately. The RAPID 85 sheet lists 380 V, 85 Nm and 90 rpm; the FU manual describes frequency control from a single-phase 220 V input and soft start/stop. These separate documents do not establish a RAPID 85 + FU package or the linear opening speed of a specific door; an approved pairing and commissioning record are needed.

Electronic limit switches and the encoder ceiling

The SIRIUS sheets specify electronic limit switches and shaft drive. They do not promise that position can never drift or that every controller offers identical intermediate-position functions. Learning and checking the limits follow the manual for the selected motor and control configuration.

The motor specification table in the GYK-92SY manual lists a 20-turn limit at the output shaft for GYM100S-2. Evaluate that value with the selected motor and drum arrangement; control-unit compatibility and limit learning must be verified in the manual for the approved motor-and-controller configuration.

What happens during a power cut?

The SIRIUS sheets show manual operation by a chain mechanism during an outage. Its availability and operation are checked for the installed drive. A manual chain does not by itself establish that the door is an approved emergency exit; evacuation planning is assessed separately for the building.

Check the chain’s accessibility during installation: a chain that ends up behind racking, pallets or machinery is of no use in an outage. Its drop length and position should be settled during installation. Before switching to manual, confirm the supply really is off, and do not touch the chain while the door is moving.

Where no motor is wanted, a chain hoist (manual chain operation) can be applied according to door dimensions.

Cycle count: The quiet decider

Thirty openings a day and three hundred openings a day do not tire the same hardware equally. Usage intensity affects the motor class, the control unit and the spring-life selection together. That is why the quotation stage asks about your daily cycle profile as much as your opening dimensions.

How do you work out the cycle count?

Usage intensity is often absent from a catalogue comparison, yet it governs selection as much as motor power. The GYM100S-2 motor specification table in the GYK-92SY manual publishes the duty entry as “S2 20% (in 10 min continuous operation)” and thermal protection as 120 °C. That manufacturer entry should not be converted into one fixed cycles-per-hour number for every door: actual travel time changes with door height, speed, partial opening and waiting logic. Selection therefore verifies the peak operating window, measured cycle time and cooling margin together.

Motor-board record to complete before quotation

Field	Information to record	Decision check
Door mechanics	Dimensions, mass, balance and drum	Torque class justified for the door configuration
Supply	Motor label; board input/output	Match 220 V/380 V and phase information separately
Limits and control	Switch/encoder; board model/revision	Do not assume an electronic-limit motor pairs with a mechanical-limit-only controller
Usage and handover	Peak window, real cycle, manual operation	Document limits and handover function results

The output should identify the chosen motor, board, limit type, document and unresolved items in one record. Torque or voltage matching alone is insufficient. The dealer submits pairing questions requiring manufacturer assessment with this record.

For movement, photocell, limit or transmitter symptoms, use the model-specific checks in r-tec Error Codes and Fault Symptoms.