Re: Servo motor keeps running. (urgent help required)

Encoder CHA ------------>G320 Phase A
Encoder CHB------------->G320 Phase B
Encoder +5V------------->Power supply +5V
Encoder GND------------->G320 ENC-
Encoder GND------------->Power supply GND
G320 ENC+----470 ohm---->G320 ENC-

Mariss

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "mina_aboulsaad" <minaf@l...>
wrote:

> Mariss,
>
> I did not connect the Encoder ground to the Gecko 320 Enc-, it went
> to the external supply -0VDC, while I connected a 670 ohm resistor
> from Enc- to Enc+ on the Gecko, should have I connected the encoder
> ground to the Gecko and only got the +5VDC line from the external
> power supply???
> I tried doing the test for the encoder mentioned in the G320
> installation notes, but the voltmeter kept reading 8.9 VDC, and
> wouldn't change while rotating motor shaft.
>
> Please advise.
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mariss Freimanis"
> <mariss92705@y...> wrote:
> > You have encoder problems.
> >
> > 1) Did you connect your encoder ground to ENC- on the G320?
> > 2) Are you sure your encoder has +5V TTL outputs?
> > 3) Do you know for sure your encoder works?
> >
> > Mariss
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mina Aboul saad"
> > <minaf@l...> wrote:
> > > So I got the Campbell breakout board the Gecko 320, a demo
> version
> > of Mach2,
> > > new encoders which I attached to my servo motor, the encoders
> draw
> > 120 mA so
> > > I got them an external power supply DC 5V, did all the wiring,
> and
> > turned
> > > the 80V DC supply, but the motors keep running and does not

stop.

> > > I'll explain the exact steps I did:
> > >
> > > - Connected ERR/RES (term 5) to Enc+ (term 7)
> > > - Connected phase A, and phase B of the encoder to the Gecko.
> > > - Wired the +5VDC and the ground from external supply to the
> > encoders.
> > > - Connected a 670 ohm resistor from term 6 to term 7 on the
> Gecko.
> > > - Connected the step & dir and the +5VDC from breakout board to
> > Gecko.
> > > - Connected the motor Arm+ and Arm-, and connected the 80 VDC
> power
> > supply.
> > >
> > > I then turned Mach2, and configured X axis only, turned the
> power
> > supply on,
> > > the motor began to move and did not stop, I then tried to jog
> the
> > axis from
> > > Mach2, I noticed that the motor breaks but the gecko fault lamp
> > turn on and
> > > then goes out repeatedly, same thing happened when jogging in
> the
> > opposite
> > > direction, the motor breaks and the Gecko faults repeatedly but
> the
> > motor
> > > keeps turning in the opposite direction and won't stop.
> > >
> > > What could I be missing???
> > > I also noticed that the step lead on the breakout board is
> always
> > on for the
> > > x axis even when I do not press the jogging key, and the
> direction
> > lead is
> > > always on when jogging in one direction and goes off in the
> other
> > direction,
> > > is this normal, or should the lead goes off after I release the
> > jogging
> > > key???
> > > Do you think it's a problem with configuring Mach2, or is there
> > something in
> > > the wiring???
> > >
> > > Please help.
> > >
> > > Best regards,
> > >
> > > Mina F.