Test rig in our instrument workshop, first Kinetix 5500 any of us has touched. 2198-H008-ERS on a 1769-L33ERM, one axis, CIP motion over the built in port. It's a bench rig for trying out a new feeder, no guarding on it and no safety circuit yet.
Drive powers up, display says STO, and the axis in Studio sits at Inhibited. MSO errors straight away with a code I'd have to look up again, 60 something. We recreated the axis with defaults and reflashed the drive to the version Studio wanted, no change either way. Motor and feedback cables are fine and the drive sees the motor.
Is there an axis parameter I'm missing for STO on the 5500? Or is it something to do with there being no safety circuit on the rig yet, I'm not sure what else to look at.
Not an axis parameter. Display says STO, so the drive's safe torque off inputs aren't seeing 24V. What's wired to the STO connector on the front, the small one under the cover?
Nothing on it, I'd bet. No K1 K2, no 24V, no enable.
Nothing on it, right. The connector is empty, I assumed it was for later when the safety relay goes in. Pretty sure that's on me for not asking sooner. So the drive won't enable at all until something drives those inputs?
Correct. STO is hardwired on the 5500, it doesn't care that there's no safety project. Two inputs, if both aren't at 24V the drive won't enable and MSO errors. For a bench with no safety yet, jumper them: 24V to both STO inputs and common to the STO common, per the STO chapter of the Kinetix 5500 manual, 2198-UM001, it has the drawing and I'd rather you copied that than my memory of which pin is which. When the safety relay goes in, those two jumpers become the relay's outputs and nothing else changes on the drive. Put a label on the jumper so it doesn't ship that way.
Jumpered the two STO inputs to 24V and common to common as the drawing in 2198-UM001 shows. Display went from STO to the normal status, axis went Ready, MSO enabled first try. Jogged it this morning.
So nothing wrong with the drive or the axis, I think, just two open STO inputs on a rig with no safety circuit, and the drive refusing to enable until they see 24V. Jumpered per the manual until the safety relay goes in.
I still don't know what the MSO error number was, I never wrote it down. And there's now a red label on the drive that says JUMPER, REMOVE BEFORE GUARDS GO ON, because somebody will forget otherwise.
Thanks mattr and ronh55.
Label is fine for a bench with nobody in reach. The day it gets guards, the relay goes in and the jumper comes out.