encoder help

[motomitch1]

I have some BEI MX213-25-1000 encoder would these be the

same as US Digital E2 - (CPR 250) PPR 1000 encoder

http://www.beiduncan.com/pdf/mx21.pdf


I want to use the BEI MX213-25-1000 with G320 Gecko

Drives would thay work good? the part im not sure about is the (CPR 250)

[Bubba]

motomitch1
I believe you can use the encoders, BUT you will have use an external power supply for them as the current draw is rated at 80ma and the Gecko can supply a max of 50ma.
Read the Gecko manuel on how to set that up.

Bubba

[motomitch1]

Yeah, one place it says the LED'S draw 30 ma. and further down it says 80 ma. must be because of the IC chips. But what I'm really trying to figure out is if they are 250 cpr / 1000 ppr or are they a 1000 cpr with 4000 ppr , this part is confusing for me every manufacturer seems to be using a different discription process.

[Bubba]

OK, I see where you are coming from now!
After looking at their wonderful cut sheet again, I think you will find this is equal to the 250 line count 1000 pulse per rev unit. If you have the UNGATED unit then there should be no ICs to draw the larger current and you may be closer to the 30ma current draw.

One way to find out for sure (I had a differential on a gecko one time not realizing it took so much current and it was rated at 120ma! AND WORKED)

Bubba

[motomitch1]

can anybody tell if this is a 5 volt TTL compatible quadrature encoder by looking at the ic chip 600406 8801 ? model#492-250-005

[Al_The_Man]

The EXar web site did not show anything, I would hazard a guess that is a 'house' number and the 8801 is manuf. date.
I would hook 5v supply up to the red & Black and see what you get, the electronics look very basic, probabally transistor driver output on the i.c. try it into TTL with and without a pull-up.
Al

[motomitch1]

IM not sure what a TTL is

[Al_The_Man]

TTL stands for Transistor-Transistor Logic and represents a Integrated circuit technology that operates on 5v DC max. limit.
By the lack of sophisticated circuitry in the encoder I would guess it not designed for TTL but depending on the output impedance of the drive in the encoder you can but try, just make sure you limit the test to 5v max and you should not do any harm.
Al

[motomitch1]

ok thanks