Hi guys. I got questions regarding sensor and how to properly interface them since I am designing an interface card. I have a PLC unit (OMRON CP1L M40DT-D).
Now the big question now is i've got these sensors..
Hall Effect Switch -> I don't know if it is NPN or PNP? How do i determine this with a multimeter? There is no code written on it and is epoxy sealed. I tried to open up 1 unit to see the insides for code or manufacturer. No luck.
Encoders..
I got three types of encoders.
Type 1. RE-30 Dunker motor encoder. I downloaded their datasheet but to no avail what output is given? It simply says output via a photo transistor. But how do I determine if this is an open collector este a PNP or NPN type via a multi tester?
Type 2. Hengstler Encoder.. I got 2 channels A and B. Are both NPN or PNP? Again same question how to test via a multimeter.
Type 3. Hall Effect as limit switches... I got a bunch of them and burned a few guessing the polarity. This time I got it right..
Pin config...
pin 1 -> VCC
pin 2 -> Gnd
pin 3 -> Vout
Same as above how to determine if its NPN or PNP type...
Generally I know how to figure out a transistor if its PNP or NPN. But I am unsure with sensors. The manufacturer of dunker and hengstler never replies... And I need to know what configuration I should use (High or Low side). My plc does both but only has 1 common rail so in general an interface card is required. Switching speeds are very slow and low voltage.
Now the big question now is i've got these sensors..
Hall Effect Switch -> I don't know if it is NPN or PNP? How do i determine this with a multimeter? There is no code written on it and is epoxy sealed. I tried to open up 1 unit to see the insides for code or manufacturer. No luck.
Encoders..
I got three types of encoders.
Type 1. RE-30 Dunker motor encoder. I downloaded their datasheet but to no avail what output is given? It simply says output via a photo transistor. But how do I determine if this is an open collector este a PNP or NPN type via a multi tester?
Type 2. Hengstler Encoder.. I got 2 channels A and B. Are both NPN or PNP? Again same question how to test via a multimeter.
Type 3. Hall Effect as limit switches... I got a bunch of them and burned a few guessing the polarity. This time I got it right..
Pin config...
pin 1 -> VCC
pin 2 -> Gnd
pin 3 -> Vout
Same as above how to determine if its NPN or PNP type...
Generally I know how to figure out a transistor if its PNP or NPN. But I am unsure with sensors. The manufacturer of dunker and hengstler never replies... And I need to know what configuration I should use (High or Low side). My plc does both but only has 1 common rail so in general an interface card is required. Switching speeds are very slow and low voltage.