Prototrak Plus Retrofit with Mesa 7i77 & 5i25 cards

Tachometers, if fitted, would be mounted on the motors.

andypugh, thanks for your help!! I see encoders only, try this link.

forum.linuxcnc.org/media/kunena/attachme...21712/IMG_0775_1.JPG


shows inside the cover of encoder.

thanks you!

Do you know if your AMC drives require a tachometer input, or can they be configured to work in torque mode?

andypugh, many thanks! Below is a description from the manual, I am not shore if I have answered the question. Also the link to manual. If you see the pics the old amps were on the inside of fan box, now on the out side, a "z" axes is on top, but looks like may need away work around to get power from capacitor PCB terminals, just looks 2 axes friendly.

www.a-m-c.com/wp-content/uploads/support...ual_Analog_Panel.pdf

""2.2.1 Single Phase (Brushed) Servo Drives
Brushed type servo drives are designed for use with permanent magnet brushed DC motors
(PMDC motors). The drive construction is basically as shown in Figure 2.3. PMDC motors have
a single winding (armature) on the rotor, and permanent magnets on the stator (no field
winding). Brushes and commutators maintain the optimum torque angle. The torque
generated by a PMDC motor is proportional to the current, giving it excellent dynamic control
capabilities in motion control systems.
Brushed drives can also be used to control current in other inductive loads such as voice coil
actuators, magnetic bearings, etc.""








My question is can I get away with using the push together spaded connectors or do I need to start anew and make one piece, for power to servo from amp. These are to be twisted,as you see in the pic, I have shrink wrap.

many thanks!!

You will need this too, for the DIP switch settings (You can select current-mode)
servosystems.com/pdf/amc/12a8.pdf

I see no reason not to make new one-piece cables from the PSU to the drives, it will be a better job and the terminals are cheap. (But then I already have a good selection of crimping tools)

andtpugh, many thanks, I like you say need the tools, I plan to make shore the connection is tight when pushed together, then shrink tube so when twisted it is all good.

EDIT: It appears the pin 1 can be used as 5v in; this can replace the separet power supply (connected to TB1) I currently have, correct?

many thanks to all!