I've got a Hitachi DC servo motor which has 5 wires (besides 2 other wires in order to supply power for motor): red,green, white,yellow and black.
I guess: red wire = power & green wire = GND for encoder, white wire = A phase encoder, yellow = B phase encoder and black wire = index signal in order to determine completion of a revolution! is this right ?

 

I've got a Hitachi DC servo motor which has 5 wires (besides 2 other wires in order to supply power for motor): red,green, white,yellow and black.
I guess: red wire = power & green wire = GND for encoder, white wire = A phase encoder, yellow = B phase encoder and black wire = index signal in order to determine completion of a revolution! is this right ?

Generally, encoder ground and motor- are not the same. My bet is red & black are power and ground, respectively, with the others being as you said, but I'm not sure... do you know the model number?

 

I wouldn't plug in the encoder if I didn't know its pinout. My best guess would be the same as Tshuck, red is +5 and black is Gnd, and the others are outputs, but that shouldn't be guesswork. Get it wrong and you may damage the encoder. Either find a way to look it up, or open it up and figure out what the wires do.

 

Generally, encoder ground and motor- are not the same. My bet is red & black are power and ground, respectively, with the others being as you said, but I'm not sure... do you know the model number?

it isn't printed on the label but i see some lines different from the others on the label:
+TYPE: D06D304E
+AX070008
+INS.CL: B
and the last line: "Hitachi,Ltd, tokyo,Jaban 4192C6551"
so is there the model number you want, Tshuck ? and what is "INS.CL: B" ?

 

so is there the model number you want, Tshuck ?

Yes, yes it is, though it may be a custom-ordered motor, so data may be hard to come by...

Is this the same thing you are seeing?

I didn't realize you had a total of 7 wires
Since you've already found your motor supply wires, I'd say you have the assumptions in post 1 correct, however, I read that this motor has an optional incremental encoder, so be aware of that, though it may very well be a quadrature encoder as the site I read that on was a bit sketchy....

and what is "INS.CL: B" ?

I'm afraid I have no idea...

 

INS. CL: B is INSulation CLass: B. The heat classification for the motor.

 

Is this the same thing you are seeing?

exactly what i've got !

I didn't realize you had a total of 7 wires

as you can see in the picture you've show, the two below biggest wire (red & black), i thinks it's for motor power supply ! and in the other group of wires, there are five differnet color wire types (red, green, black,white and yellow).As i've guessed before, red = power & green = GND for encoder supply power, white = A phase encoder & yellow = B phase encoder , but i'm not sure that black is for index signal, do u thinks so ?
and i think it's a quadrature encoder.

so be aware of that, though it may very well be a quadrature encoder as the site I read that on was a bit sketchy....

so could u tell me more clearly about what i should be carefull ?
and it's great if you can give me user manual or some documents about this kind of HItachi motor !
Anyway, thanks a lot for your comments !

 

Does your motor mention "Ricoh" on it?

All the references I've found to that model number use a Ricoh Encoder.

Hitachi DC motor (D06D304E)
volts: 38v
Amp.: 1.9A
RPM: 3700
RICOH: P/N
output: 53W
RATING: CONT.
INS. CL.: B
Encoder: 240 Pulses/Revolution

Look at the end plate and see if it may be a different encoder and possibly a brake? The Ricoh Encoder seems to have red/black/white/blue output wires.

 

Does your motor mention "Ricoh" on it?

All the references I've found to that model number use a Ricoh Encoder.

Hitachi DC motor (D06D304E)
volts: 38v
Amp.: 1.9A
RPM: 3700
RICOH: P/N
output: 53W
RATING: CONT.
INS. CL.: B
Encoder: 240 Pulses/Revolution

Look at the end plate and see if it may be a different encoder and possibly a brake? The Ricoh Encoder seems to have red/black/white/blue output wires.

the one of mine has the same line as you refered above, but would you mind answering my questions on the above post ?

 

That is all the information I could find on google. It seems there was one sold on eBay, it's listed in a seller's feedback profile.

Shot in the dark, but finding a way to contact that seller may get the info you need. It seems rather sparse on the net, for being a relatively common motor.


I wouldn't suggest hooking up the encoder portion until the required voltage and wiring is correct, otherwise you risk destroying it.

Taking the motor apart and tracing wires is the other option.

 

A quadrature encoder actually is a type of incremental encoder. It's unlikely that you'd see any other kind.

 

A quadrature encoder actually is a type of incremental encoder. It's unlikely that you'd see any other kind.

Yes, you are right! Had a brain lapse there....
I meant that the formatting might be different... expect quadrature but get gray code, or binary....

With so few channels, it is most likely a quadrature...

 

It's a glass quadrature encoder, the 5 wire models normally have this setup for the 5 wires;

gnd wire
LEDA anode
LEDB anode
photosensorA collector
photosensorB collector

The two LEDs can be found with a multimeter on diode test as they will have about a 1.2v Vf voltage to the ground wire.

The two sensor wires will usually read open circuit. To test them I feed a current regulated 10mA or so into both LEDs (you can do that with 5v supply and two resistors), then tie the other two sensor wires to +5v through high value resistors generally about 39k - 56k. Then as the shaft is turned the sensor outputs will vary between a logic level range 1v-4.5v or so.

 

as i've mention, my dc motor has the folowing infor:
Hitachi DC motor (D06D304E)
volts: 38v
Amp.: 1.9A
RPM: 3700
RICOH: P/N
output: 53W
RATING: CONT.
INS. CL.: B
Encoder: 240 Pulses/Revolution
i've done many searches on internet but can still not find any infor about function of wires on the motor. So i really hope that someone can give me the answer !
there are two wire groups on my motor:
+first group: 2 big wire: rea & black => i think they are power supply wires for motor
+second group: 6 wires ( 2 black, 1 red, 1 green, 1 yellow & 1 white) => they make me confused, how can i test to determine the function of each among the wires ? which for A/B channel encoder, which for Index, which for supplying power for encoder ?

 

RB told you in the post above yours. He knows this stuff.

 

Thanks Shortbus.

...
+second group: 6 wires ( 2 black, 1 red, 1 green, 1 yellow & 1 white) => they make me confused, how can i test to determine the function of each among the wires ? which for A/B channel encoder, which for Index, which for supplying power for encoder ?

That sounds right, but has 2 ground wires (the black ones) instead of one shared ground wire.

Please see what I posted above, it should not be hard to test the wires and find the two wires that are the LEDs, and the two wires that are the sensor outputs.