Hi Hood,
I know the feeling, I have an MPL-A430H which according to this table requires 12A whereas the 2098-DSD-020 I actually have driving it is capable
of only 10A. In use truly how often do you come even close to maxing your servo and drive?
I find that if I require maximum torque (output current) its usually at very much less than maximum speed. Given that the drive can be likened to
a buck regulator where the total out output current exceeds the DC Link current in the manner of a DC transformer that really I very seldom come
anywhere close to maxing the drive.
I can only conclude that the drives are generously specified and can accommodate a mild overload without blowing up. It comports well with my
perception of the quality and performance of the drive.
I some while back bought a refurbished 2.65kW servo, that is 14A at 180Vrms. It was manufactured in '95 and is fitted with an 8 pole resolver.
Trying to find a drive for it proved impossible, or least within my budget. I decided to make one, electronics being my thing and control engineering
being my training.
To get 14A rms per phase is going to require 28A rms input from the supply. I'll not get away with using such a device in the village I live, the power supply
degradation is likely to cause a complaint and thereafter the power company will track me down. I will have to therefore make a boost type PFC (powerfactor correction)
circuit. It will require a 10 second overload of 70A. You can be assured I've given the matter of input current distortion and output current, continuous and
overload, considerable thought in the process of designing my drive.
The 2098-DSD series will still being made in 2012 and thus were sold as compatible with the MPL series servos which started manufacture in the early 2000's.
Craig