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Siemens SSA61 0-10V radiator values

Discussion in 'Plumbing and Central Heating' started by slip.cougan, 1 Nov 2020.

  1. slip.cougan

    slip.cougan

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    I've picked up about half a dozen of these to control my radiator valves.

    I'm modulating these with Crestron 0-10V controllers (DIN-4DIM-FLV4). Measuring the controller output these do indeed measure 0-10V exactly when modulating the valves but the valves do not operate.
    I'm using the supplied Siemens cable which is wired:
    Red - 24V
    Grey - 0-10V control
    Black - 0V

    I've tried running these on 24Vac & DC to no avail. Am I wasting my time with these?
    If so can anyone recommend a suitable replacement?

    The DIN-4DIM-FLV4 is actually a 4 channel 0-10V lighting controller but totally suitable for this purpose.

    Cheers
    -s
     
  2. bernardgreen

    bernardgreen

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  4. slip.cougan

    slip.cougan

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    Location:
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    Apologies for the late reply on this topic. Work has dictated that I don't get to do fun stuff right now.

    Anyway an update:
    I picked up a Ballorex APR-40405 (0-10V wax proportional actuator) as a test.
    This works as expected (apart from the fact the control is inverted - an easy fix in programming)
    So it certainly looks like none of the Siemens SSA's work. These were all brand new units out of the box so I simply don't understand why are not playing ball.
    What's more, they are supposed to run an auto calibration on power-up - they don't. They all move to pretty much the same 50% position and stop.
    Doesn't matter if they have a control voltage applied or not.

    @bernardgreen,
    Thanks for responding.
    I checked all the specs before I bought these and the run time of 34 seconds is actually pretty quick compared to a wax based actuator. This is why I went for motorised. I've certainly waited long enough for them to position. Also being motorised I should be able to adjust the voltage and see them move instantly as they have a positional indicator on the top.

    Cheers
    -s
     
  5. slip.cougan

    slip.cougan

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    Location:
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    So Basically I'm a complete dumbass.
    The SSA61's need to be fitted to the valve. Then once powered up they run the calibration.
    Once calibrated they work as they should.
    Lesson learned :)
    -s
     
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