Modutrol IV servo motors

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Modutrol IV Motors are spring return and non-spring return motors used to control dampers and valves.

•	M62xx, M72xx and M91xx models and all accessories are mainly designed for use in HVAC applications and sold via Buildings (HBT) sales channels.
•	M94xx series are mainly designed for burner applications and are sold via Thermal Solutions (HTS) sales channels.

Modutrol IV motors are used for air damper and gas flow control in industrial burner applications and for damper control in air handling installations.

•	M62xx models are three-wire floating control motors for use with controllers that provide a switched spdt or floating output and have an internal electrically isolated feedback potentiometer that provides indication of the motor shaft position.
•	M72xx models accept a current or voltage signal from an electronic controller to position the motor shaft to any point between open and closed.
•	M91xx models use a 135Ohm modulating proportional signal to position the motor shaft to any point between open and closed.
•	M94xx models are optimized for use in burner applications and use a 135Ohm modulating proportional signal to position the motor shaft to any point between open and closed.

Approvals

CE, UL, FM, CSA, EAC

Protection class

IP44

•	Weather protection kit is available as accessory to upgrade to IP54

Ambient temperature

-40 ... 66 ^oC

Maximum humidity

85 %rh

Features

•	Screw terminals are standard.
•	Adapter bracket for matching shaft height of older motors (ModIII) is available.
•	Most models have field adjustable stroke (90 to 160).
•	Die-cast aluminium housing.
•	Two adjustable internal SPDT auxiliary switches are factory mounted.
•	Dual shaft ends for normally open or normally closed valve or damper application. Both shaft ends offer the same torque rating.

Input voltage

•	Default: 24 Vac
•	Via optional built-in transformer: 24/120/230 Vac
•	Line frequency: 50/60 Hz

Shaft mounting

9.5mm (3/8") square for all models on both ends

End switches

Function

Normally Closed

Additional description

•	Modutrol motor timings are independant of line frequency.
•	Torque ratings for dual-ended shaft motors are the sum of the shaft torques (power-end torque plus auxiliary-end torque).
•	Breakaway torque is the maximum torque available to overcome occasional large loads such as a seized damper or valve. The breakaway torque is 1.5x the normal rated torque.
•	Other models than listed in this catalogue are available outside Europe. Most models can be replaced by the available European models.

3-point control non-spring return (M62x4). Order via HBT sales channels, or select Kromschroeder replacement model.

3-point control spring return (M62x5). Order via HBT sales channels.

Analogue input control non-spring return (M72x4). Order via HBT sales channels, or select Kromschroeder replacement model.

Analogue input control spring return (M72x5). Order via HBT sales channels.

Potentiometer control non-spring return (M91x4). Order via HBT sales channels.

Potentiometer control spring return (M91x5). Order via HBT sales channels.

Potentiometer control non-spring return (M94x4)for burner applications. Order via HTS sales channels.

Accessories, for use with all HBT and Thermal Solutions Mod IV models. To be ordered via HBT sales channels.

Kromschroeder IC 50 alternatives for most common Modutrol non-spring return models. Separate models exist for 24, 120 and 230Vac.