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EMG30 Geared Motor 4.22W with Encoder

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aj nwadei (Zoobz88)
Member
Username: Zoobz88

Post Number: 1
Registered: 4-2010
Posted on Monday, April 12, 2010 - 7:43 pm:    Edit Post    Move Post (Moderator/Admin Only)

Product Id: 1453-005
I wanted more information about this product. Perhaps a data sheet telling me the output of each wire. I have run some tests and already confirmed that the red and black are for power. I guess the other four would have to do with the encoder. The website provided this information:

Purple (1) Hall Sensor B Vout
Blue (2) Hall sensor A Vout
Green (3) Hall sensor ground
Brown (4) Hall sensor Vcc

I guess Vcc is power for encoder. What is the magnitude of Hall sensor A and B output?

Also what is the gear ratio?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1235
Registered: 10-2004
Posted on Monday, April 12, 2010 - 9:24 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi,

We have put the datsheet on the website http://www.technobots.co.uk/Data%20Sheets/1453-005.pdf but it does not really state any more than we had already placed into the item description. Yes, red and black are the motor power - terminals 5 & 6. The other 4 are the hall effect sensors as indicated in the description. These sensors would need decoding to give distance travelled and direction.

This motor was intended to be used with the associated controller 1502-020 which will take care of the signal levels.

The gearbox ratio is 30:1 but the motor rpm is probably not that relevant as we publish the geared output speed of a nominal 170rpm and the encoder is on this output shaft.

As for output level, we do not have this data but I would suggest putting 5V on the hall sensors and measuring the output on a scope.

If you need any further information, let us know as we will talk to the manufacturer.
aj nwadei (Zoobz88)
Member
Username: Zoobz88

Post Number: 2
Registered: 4-2010
Posted on Saturday, April 17, 2010 - 7:39 pm:    Edit Post    Move Post (Moderator/Admin Only)

Does this motor have bearings around the shaft? I guess what I mean to ask is, is it ok to mount this motor directly to the wheel for light robot applications?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1236
Registered: 10-2004
Posted on Monday, April 19, 2010 - 4:29 pm:    Edit Post    Move Post (Moderator/Admin Only)

Sorry but we do not have information as to the bearing type on the output shaft. Whilst many builders attach wheels direct to gear motor shafts, we always prefer not to due to the stresses that can be placed on the motor / gearing. Clearly if you duty is light, then there is every chance that this motor will last a long time as they are well built.
aj nwadei (Zoobz88)
Member
Username: Zoobz88

Post Number: 3
Registered: 4-2010
Posted on Monday, April 19, 2010 - 5:18 pm:    Edit Post    Move Post (Moderator/Admin Only)

Oh Ok.
What if I wanted to couple the shaft to another? I noticed it is a bit difficult to find D-shaft couplings. You guys dont sell those do you?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1238
Registered: 10-2004
Posted on Tuesday, April 20, 2010 - 7:15 pm:    Edit Post    Move Post (Moderator/Admin Only)

We stock a range of couplings in various bores that have grub screw fixings which are suitable for D shafts.
aj nwadei (Zoobz88)
Member
Username: Zoobz88

Post Number: 4
Registered: 4-2010
Posted on Wednesday, April 21, 2010 - 5:10 am:    Edit Post    Move Post (Moderator/Admin Only)

"We stock a range of couplings in various bores that have grub screw fixings which are suitable for D shafts."

I looked on the data sheet and I do not see the specification for the D-shaft. If you can tell me this, I can order the shaft coupling I need.

Do you know the specification for the D-shaft? (Ex: D-8, D-12, etc)
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1239
Registered: 10-2004
Posted on Wednesday, April 21, 2010 - 6:50 pm:    Edit Post    Move Post (Moderator/Admin Only)

The datasheet specifies a shaft diameter of 5mm, so our 5mm couplings will be fine. See couplings at http://www.technobots.co.uk/acatalog/Shop_Front_Shaft_Couplings_408.html such as 4604-006.
aj nwadei (Zoobz88)
Member
Username: Zoobz88

Post Number: 5
Registered: 4-2010
Posted on Wednesday, April 21, 2010 - 9:24 pm:    Edit Post    Move Post (Moderator/Admin Only)

Awesome! ok The couplings come with set screws right?
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 1240
Registered: 10-2004
Posted on Thursday, April 22, 2010 - 5:06 pm:    Edit Post    Move Post (Moderator/Admin Only)

The photo not even shows the grub screws (not set screws) but also show the hex key that is included with the couplings.

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