VersaMax Micro - Sentrol DPS (door position sensor)

Anyone know how to get a versamax to recognize the change of state in a Sentrol DPS (closed = 000.4 Ohms / Open = O.L)
NOT supervised

maybe i dont have it wired correctly? on lead of dps on I1 the other lead on C1 (top connections)

24Vdc on +/- on (bottom connections)

no other looping wires...

Circuit. (normally closed DPS.. when DPS opens(goes false), moves 100 into Register)

%I0001
-----|/|----|------|
...............|..MOV..|-
...............|..INT..|
...............|.........|
...............|..1.....|
...............|.........|
.......100>-|.IN...Q|-< %R0002
...............|------|

Just curious, are you using R0001 for a timer or counter? Timers and counters use 3 registers so if one is designated %R0001 then it will also use R0002 and R0003.

Does it look similar to this?


Hopefully Steve, Russ, or one of the GE gurus will clarify any other issues. I am not sure about the 1 part, it is possible GE does bit moves so you may have to use a length of 3 to place those 3 bits into a register. I will hookup my 90-30 in a little while and test it. I forgot to give the input designation for the NOT bit too.

rsdoran said:

Just curious, are you using R0001 for a timer or counter? Timers and counters use 3 registers so if one is designated %R0001 then it will also use R0002 and R0003.

Does it look similar to this?

Hopefully Steve, Russ, or one of the GE gurus will clarify any other issues. I am not sure about the 1 part.

Click to expand...

Yes very similar.. R dont really matter at this point its just a register.. it could be R49 for that matter.. the thing is the input of %I00001 is not seeing the change of state.. and for that matter when i try to short the I1 and C1 together and pull it apart i dont see the input change.

I know this will sound stupid but I have done it, once you downloaded the program did you put it back in RUN?

Yes I put it back into run.

I had to ask, I spent 2 days because I was dumb enough not to pay attention to that aspect.

I mentioned the timer/counter aspect because it is common, if something is using %R0001 then the moved value will will be affected the next scan if using %R0002, in other words faster then you can see.

I have not used a GE unit for awhile nor had time to connect the system I have to test it. If the input is not changing there is a problem, maybe leakage, that condition should ENERGIZE anytime a signal is NOT present.

IF you can "view" the input changing states and the register is not changing appropriately then I suspect (not sure) that WE have the length set improperly...I am keeping this on top hoping the GE gurus will answer. I am going to hookup my system now and test this.

Fixed!!!

rsdoran said:

I had to ask, I spent 2 days because I was dumb enough not to pay attention to that aspect.....

I mentioned the time...I am keeping this on top hoping the GE gurus will answer. I am going to hookup my system now and test this.

Click to expand...

I had it wired wrong.. I did not bring a negative loop wire from the bottom of the PLC where (-24vdc) is into the C1 (common) connection, and I did not run one lead of the DPS into the bottom of the PLC where (+24vdc) is. and then the other lead of the DPS goes to I1

Is Sentrol Industrial now owned by GE. Whenever I try to go to sentrol.com I get GE website. I found a magnetic door contact at the following site that I like to buy from Sentrol instead of distribution to save money (large quantity).

http://www.clrwtr.com/Sentrol-Position-Sensors.htm

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Is there any particular reason why you revived a thread that's over two years old rather than start a new one?