This is a PCB breakout board designed for connecting Yaskawa servo drives to Duet3D control boards. Specifically, it was developed to simplify connection between a Duet 3 6XD board and a pair of Yaskawa Sigma-7 SGD7S-****00A series servo drives—i.e., step/dir-capable drives. These drives range from 50W to 15kW, with the 50W to 400W versions (10-400W motors) being available in 100VAC or 200VAC single-phase.
This should be considered in beta! It is working on my drives, but use at your own risk!
- Correct voltage mismatch in Step/Direction signal. The 6XD drives these signals at 5V, the SGD7S wants 3.3V
- Allow enabling “Servo On” from the 6XD’s Dx_EN(-) pin. The SGD7S uses a 24V enable signal which the 6XD enable pins cannot drive directly. Set 6XD's enable jumper to "active disable".
- Combines the torque-limit enable for forward and reverse (these are 2 separate inputs) and from both drives, to allow a single optoisolated output to trigger torque limiting for both drives, in both directions (e.g., during homing or moves prior to homing).
- Combine the alarm reset signal for both drives to use a single optoisolated output
- Combine the P-control enable signal for both drives to use a single optoisolated output
- Provide a jumper to select two outputs between P-Control and two open terminal block connections (i.e., you can connect 2 of the 3)
- Block terminals and jumper allow reconfiguration of various inputs/outputs from default if desired.
No. None of the connections made on the board are particularly bulky or complex; the necessary components could be joined directly into the wiring between the 6XD and SGD7S’s CN1 connector if preferred.
Not recommended. Other boards could be used, but not with the circuitry on this breakout board. While it may seem that the 1XD would be a simple stand-in for the 6XD, it cannot directly handle the step/dir signal current for the SGD7S and would need line-driver type setup. Additionally, it cannot directly interface with the necessary inputs via IO pins (though OUT_0 and OUT_1 could), as the 6XD’s optoisolated outputs can.
You could use multiple breakout boards (up to three) on a 6XD. The opto-isolated outputs could be daisy-chained, however, you may need to ration them carefully. The 6XD has four, with current limits of 50mA. Each alarm-reset, P-Control, and torque-limit input takes 5mA. So, six drives is not a problem for parallel outputs in most cases, however torque-limit signals from a single output would be maxed out at 5 drives.
You don’t, this is currently beta-version at best. The SGD7S manual is nearly 650 pages. I’ve tried to make it simple here, but it isn’t. Your drive connections are at your own risk.
Probably. Good luck, we all believe in you.