Dell IQM Electric Motor Performance Data for IQM, IQML New Generation Modulating Actuators, 3-Phase Power Supplies. Publication Number: E430E, Issue 1, Date of Issue: 04/02.
Summary
Rotork IQM and IQML new generation modulating actuator electric motor performance data for 3-phase power supplies at 380-480V, 50/60Hz. Documents seating torque, modulating torque at S4 50% duty cycle, locked rotor characteristics, rated amps at 100% torque switch setting, and low-inertia squirrel cage induction motor design with class F insulation reaching full speed in 3 mains cycles.
Page 1 Text Content
Electric Motor Performance Data for IQM & IQML New Generation Modulating Actuators – 3 Phase Power Supplies
Publication number E430E Issue 1 Date of issue 04/02
Introduction
60HZ: 460 480
50Hz: 380 400 415
Important Notes For any voltage, “apply” indicates that the particular motor has not been systemised. Contact Rotork. IQM and IQML have the same electrical characteristics. IQML actuators incorporate a linear output shaft. Refer to publication E410E for more information. For IQML actuator motor data use the appropriate IQM data for the same speed and voltage. e.g. For IQML10 at 24 rpm, look up IQM10 at 24 rpm.
Glossary Seating Torque – Corresponds to 100% torque switch setting. This torque is available for end of travel seating. Modulating Torque – Corresponds to maximum average modulating torque for S4, 50% duty cycle Locked Rotor – motor starting and stalled condition Rated Amps – current at 100% torque switch setting Modulating (nominal) load.-. Motor loading corresponding to modulating torque. Efficiency – electrical efficiency of the actuator motor.
Design criteria Motors designed for operation of valve actuators require special consideration. For IQM actuators, continuous running at the S4 50%, 1200 starts per hour rate is a requirement. Rotork recognise the special nature of actuator motors and have therefore designed the IQM motor and its control package with this unique duty at the forefront.
IQ Motor Design IQ motors are of a low inertia, squirrel cage induction design, reaching full speed in 3 cycles of the mains frequency. In their standard 3 phase form they are class F insulated, rated S4, 50% at specified modulating load torque. The motor torque/speed characteristic has been designed to fulfil the following requirements: High stall torque in comparison with that required to operate and seat the valve. This is essential in maintaining rated torque at depressed voltage conditions as torque varies with the square of the voltage. Rotork are able to guarantee actuator performance at –10% of nominal voltage. Pull out torque available at speed (50-70% of synchronous). For modulating duty, without lost motion, starting torque is high, at least 80% of pull out torque.
Page Summary Contents For Dell IQM Electric Motor Performance Data for IQM, IQML New Generation Modulating Actuators, 3-Phase Power Supplies. Publication Number: E430E, Issue 1, Date of Issue: 04/02.
Manual Details
| Brand | Dell |
|---|---|
| Pages | 7 |
| File Size | 255.09 KB |
| Published | July 03, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What duty cycle is required for continuous operation of IQM actuators?
Continuous running at S4, 50%, and a rate of up to 1200 starts per hour.
How are we protected from over-temperature when using the IQM motor?
Two embedded thermostats in the motor's end windings provide protection if the duty cycle exceeds the actuator rating.
What is the minimum requirement for sizing power supply cables?
Cables must be sized to ensure volt drop does not exceed 15% of nominal supply voltage at locked rotor current.
Are frequency converters recommended for IQM actuators?
No, frequency converters for variable speed drives are not recommended as a suitable supply; UPS systems must have negligible harmonics.