Sizing the axis from the SH3 ratings
The SH30553P1BA4100 sits in Schneider's SH3 family as a 680 W continuous servo with an absolute multiturn Hiperface DSL encoder — single-cable feedback that keeps the loop deterministic to the cycle, which is what a motion integrator wants when the axis has to hold the micron on a repeat shot. The 55 mm flange and 176.5 mm body length make it the short-frame SH3 slot. Continuous stall torque is 1.05 N.m across 115...480 V three-phase, and peak stall torque reaches 3.5 N.m at the same supply window — the 3.3:1 peak-to-continuous headroom is what lets the drive pull accel transients without saturating the current loop. Peak current is 6.5 A Irms, against a 1.7 A continuous stall current, so the drive sizing is set by the transient duty, not the steady-state figure.
Supply-voltage trade-off at the nameplate
The motor behaves differently on each incoming supply: at 230 V single-phase it delivers 1.1 N.m nominal torque and 390 W output at 4000 rpm; on 400 V or 480 V three-phase it drops to 0.81 N.m nominal but climbs to 680 W output and 8000/9000 rpm nominal speed — so the drive's mains input dictates both the torque ceiling and the speed ceiling on the same order code. Back-EMF constant 41 V/krpm at 20 °C and torque constant 0.62 N.m/A at 120 °C copper temperature are the loop-tuning numbers — the Kt figure at the hot-stator temperature is the one that matches real operating copper, not the cold value on the nameplate.
Mechanical fit and shaft loading
Shaft is 9 mm diameter with a parallel key 3 mm wide and 20 mm length — standard parallel-key coupling hardware mates without a custom sleeve. Maximum radial load is 710 N at 1000 rpm derating linearly with speed; maximum axial load is 80 N. International standard flange with 5.5 mm mounting holes on a 40 mm centring collar at 2 mm depth, and a quicklock rotatable right-angle connector for the single-cable Hiperface DSL link — the connector rotates so the cable exit can be clocked to the cabinet layout without re-bending the cable.
Environment, cooling and the loop
Cooling is natural convection — no fan, no blower — and IP65 holds on both the motor body and the shaft bushing per IEC 60034-5, so the unit sits inside a sealed cabinet or an IP-rated machine envelope without derating. With no holding brake fitted, an external holding arrangement or vertical-axis brake resistor path must be specified separately if the application needs a fail-safe stop.