Durst L1840 and RH Designs StopClock...can't get there from here?
I have an RH Designs StopClock (f-stop timer) that I acquired for another enlarger. When I picked up an L1840 Durst a while back, it became clear that these two units may not work together, at least not in the "plug and play" sort of way (as the StopClock does with my Saunders).
So, my question...is there a way to control the Durst light source via the StopClock by circumventing the controls on the Durst? Be forewarned, I can turn a wrench as well as the next guy, but I know nothing about things electrical.
I put a query into RH Designs to which they responded promptly, and at this point, unless there is a way to tap into the light source, it appears I'd be confined to using the StopClock as an elaborate calculator for the Durst.
Thanks in advance for your thoughts and ideas.
You can easily bypass the timer in the Durst control box. Just hook the RH Designs unit up to your light source. Which light source or head are you using?
Originally Posted by Mark Carstens
If it is a CLS head, then the timer input on those is pretty foolproof. It accepts 120v or 220v from your timer, but that voltage only operates an on-off switching funciton. The 1000w or 2000w CLS power supply will draw its high amperage current through its other cord to the mains supply and not fry your timer.
Let me know which components you have; it should be an easy hookup.l
Last edited by ic-racer; 07-02-2010 at 12:20 PM. Click to view previous post history.
So, based on what I see on the "Stop Clock" instructions at the RH site and if you have a CLS head you would do the following:
Hook the Stop Clock "Mains input connector" to your mains
Hook the Stop Clock "Enlarger Connector" to the "timer" input on your EST1000 or EST2000 power supply (I believe this will work with either 120v or 220v)
Hook the "power input" connector on the EST1000 or EST2000 to the mains.
You will no longer need a cable from the enlarger's power supply's (between the feet) "timer output" to the "timer input" of the EST1000/2000.
Last edited by ic-racer; 07-02-2010 at 12:11 PM. Click to view previous post history.
If you can use a screwdriver and wire stripper, you can construct the needed european style cable ends from mouser.com let me know if you need part numbers.
Last edited by Mark Carstens; 07-02-2010 at 02:32 PM. Click to view previous post history.
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Glad you got it sorted Mark, and thanks to you and IC-racer for posting the info. It's often difficult for us to come up with a definitive answer to how to connect to an unfamiliar enlarger type so experiences like this are valuable.