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The motors accept a current or voltage signal from an electronic controller to position a damper or valve at any point between open and closed. Pneumatic Receiver Ctrlr Dual Prop. JPG But it’s given its cost, a can only be justified where the torque and resolution performance is required, like ID or FD control dampers on boilers. Heres another question then, what acctuators does everyone else use for things such as port valve motors?
BC’s support response was to replace the motor with a slower motor.
Above replacements may require additional mounting accessories. I am going to switch the motors out.
We have one of their higher accuracy ones now that will be installed next week. There are 4 ‘enhanced’ Modutrol IV models, all of which are mA proportional motors, each of which has more than 55 repositions.
Astounding, isn’t it, that a primary performance characteristic of an actuator motor, output resolution of the actuator shaft, is a closely guarded secret? Integral junction box provides NEMA 3 weather protection.
This has helped, but not as much as a working valve would! The oven lined out nicely with a slower motor and the motor did not hunt. I suspect the nmber of repositions steps doesn’t matter a heck of lot when the motor drives a damper in an air handler.
Integral auxiliary switches are available factory mounted, or can be field added. There seems to be some kind of deadband effecting the repsone of the valve.
Let’s assume the actuator is a recent model Modutrol IV, model M The pdf scanned, not text, believe it or not is here: It specs the reposition resolution. Email m72884 a Friend.
Usually Ships in 1 – 3 Weeks Availability: Is this item right for you? So bear in mind there’s still some question on that value. Motor and circuitry operate from 24 Vac.
Honeywell Modulating Motor M 7284 C 1000
deadband on a HW modutrol motor [Text] – – Interactive Q & A
It took 3 calls to find someone willing to research this. The complaint was hunting, where the controller couldn’t maintain setpoint on a belt oven. Safe and secure checkout at Controls Central. I have seen that with pneumatic actuators. Is it only the Q model that honetwell this?
Modutrol IV™ Series 2 Motors | Industrial Controls
Cross Reference Honeywell, Inc. Now, it could be 2. Quick-connect terminals are standard; screw terminal adapter is available.
Motors are designed for either normally open or normally closed valves and dampers. There is some interplay between a deadband adjustment in the motor and its resolution, but I can’t recall the details.
The ideal cotnrol position was in between motor reposition-steps. Request Quote Live Chat. The result of his research is that all except 4 models and all on-off motors have 55 “repositions”, or steps of resolution. Modutrol IV Motor V 90 mm7284 stroke 30 sec Wow dan, what great info!
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