4.2Amp Driver Pack
The external driver pack is based around the 7.8Amp module from Arc Euro Trade. This provides sufficient drive for the 680Ncm motor and runs directly off the output of the DivisionMaster.
Datasheet on driver 4A Driver - Datasheet
| Pin | Signal | Wire | Notes |
| 4 | Step | Grey | |
| 5 | +5V | Red | Link all 3 |
| 7 | 0V | Black | Can be left floating |
| 8 | Enable | Pink | |
| 9 | Direction | Violet |
The Enable output is active when the LED is lit on DivisionMaster, otherwise the the motor is disabled. If it is necessary to maintain power to the motor for holding purposes, then use pin 7 rather than pin 8, and the motor will only be switched off when DivisionMaster is switched off.
Pictures need to be updated to the 4.2Amp module ...
The colour coding for the motor connections has been modified so that it matches the motor cable, something that will be followed through to the DivisionMaster itself at some point.
Power supply is a transformer and bridge rectifier arrangement providing around 42V to the driver module. This leaves a margin of headroom to the 50V maximum.
Overall size of driver - 155mm x 205mm x 110mm high excluding connectors.
Component List
- 4.2A Bi-Polar Stepper Motor Driver
- 300VA 30V Toroidal Transformer
- 200V 35A Bridge Rectifier
- 4700uF 63V Electrolytic Capacitor
- Switched IEC mains inlet
- Low voltage power harness
- Aluminium Case (205mm x 155mm x 75mm )
To Do ... Circuit Diagram, Case machining drawings