Damper motor problem

pauly · Apr 14, 2014

We have a damper motor which we need to test. However the method of connection has eluded us. Can any body identify the makers symbol in the picture attached?

duckman · Apr 14, 2014

unable to help with the manufacture, but why can't you just test it. What is the issue with the motor?

iant · Apr 14, 2014

I have no Idea as to the MFG either
these are usually analogue - BUT
0-10, */- 5 or 10, 0~20mA, 4~20mA at a voltage (might be 24vdc)
what controls this

danw · Apr 14, 2014

Is there a paper label with wiring terminal ID inside the cover?

Photo of wiring terminals?

meghnesh · Apr 14, 2014

Hi pauly !!

Do you have any electrical specifications details?
Else open the cover or enclosure. You may find something printed on the inner part of the cover.

Regards.
Meghnesh

Lancie1 · Apr 14, 2014

That looks more like a Ground Terminal symbol, than a manufacturers logo.

Bit_Bucket_07 · Apr 14, 2014

Take it apart and look at it. If it's discrete control, then it probably only has some limit switches and the motor. Even if it has analog controls, you might be able to trace the wiring and understand the terminal board layout. Hard to believe that it wouldn't have a manufacturer's name or part number somewhere. With that information, you could probably find a schematic.

OkiePC · Apr 14, 2014

first thing I noticed was the chunk of brass missing from the output shaft. is that the symbol for honeywell modutrol motors? in any case, the terminals are likely to give away the control method and wiring.

duckman · Apr 15, 2014

l believe the brass missing from the shaft is a means of attachng a spanner to manually open/close damper

shooter · Apr 15, 2014

yes that was same as i thought, modutrol
open the cover on electric side and we will give you a better clue.

it has a 3 places for power, 2 for the brake and another three for the wiper.
checked in shop but can not find the symbol
Testing them should be done with 24 Volts AC as starter, (check for the capacitor inside.) these were available in all types of Voltages so a Variac will be helpfull.

shooter · Apr 15, 2014

and danfoss has this type also, but unable to find symbol too.

Damper motor problem

pauly

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iant

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