Help Required Smr 1224 limit switch

D

duaneclaude

Member
My Satellite Setup
vu solo 4K
1.2mtr cm dish
My Location
Greater Manchester
Can anyone advise where I can obtain the limit switches for an smr 1224 H-H mount?
My CM 1.2 dish will only move west, and I have tracked the fault to one of the actual switches

One of the switches clicks when pressed, but the other is just moving in and out without the click.
 
type the magic word into san google
microswitch and a window opens
 
duaneclaude said:
Can anyone advise where I can obtain the limit switches for an smr 1224 H-H mount?
My CM 1.2 dish will only move west, and I have tracked the fault to one of the actual switches

One of the switches clicks when pressed, but the other is just moving in and out without the click.
Click to expand...
Post a picture, though most switches of that era have the part number on the casing.
 
Have looked for these, but they all look different.
 

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duaneclaude said:
My CM 1.2 dish will only move west, and I have tracked the fault to one of the actual switches

One of the switches clicks when pressed, but the other is just moving in and out without the click.
Click to expand...

Apart from the clicking or not-clicking:
Have you confirmed that the motor runs again to the east, when you (test-wise!) short the concerned switch+diode?
So that the switch was really the only cause?

It's not a difficult check, so that is what I would do fort a test. Or maybe you have done it already?

Greetz,
A33
 
Channel Hopper said:
That is quite standard for the era. Any Taiwanese actuator supplier will have them
Click to expand...
Found these but they have 3 prongs. Can the middle one be ignored ?
 

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a33 said:
Apart from the clicking or not-clicking:
Have you confirmed that the motor runs again to the east, when you (test-wise!) short the concerned switch+diode?
So that the switch was really the only cause?

It's not a difficult check, so that is what I would do fort a test. Or maybe you have done it already?

Greetz,
A33
Click to expand...
Yes, was flicking the switch in and out and when I tried turning the dish it went both ways again for a short while, but has since packed in again.
 
duaneclaude said:
Found these but they have 3 prongs. Can the middle one be ignored ?
Click to expand...
Yes.
You need only the contacts for "normally closed". The third contact is for "normally open".

Greetz,
A33
 
a33 said:
Yes.
You need only the contacts for "normally closed". The third contact is for "normally open".

Greetz,
A33
Click to expand...
Thanks for that info.
Will measure the switches tomorrow and if they are the same as the ones advertised will buy them.
 
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