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Motor Control Systems

Matched drives and control cabinets, supplied with the motor as one drive system.

YZYVP Series

Control system for YVP oilfield induction motors

5.5–90 kWIP54Dual circuit
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TYP-T3-F Series

Control system for PM intelligent drive motors

1.5–132 kWIP54SCADA-ready
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LD800 Drive

General-purpose vector drive

2.2–220 kW32-bit DSPExpansion cards
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Technical articles on these series

VFD Base Speed and Motor Operating Range

Define base speed, constant-torque duty, field weakening and cooling limits before approving a motor's VFD speed range.

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Common-Mode Chokes in Motor Drive Systems

A system-level guide to common-mode chokes, including current paths, grounding, bearing risk and the evidence needed before selection.

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Extruder Motor Selection: Low-Speed Torque, Cooling and Overload

Select an extruder motor and VFD from recipe-based torque, low-speed cooling, material starts and gearbox limits.

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IGBT vs Thyristor Motor Drives: What Changed and Why It Matters

A practical explanation of how fully controlled power switches, PWM and faster protection changed modern variable-frequency motor drives.

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Matching a VFD to a Motor: The Checks Buyers Should Not Skip

A practical VFD-to-motor matching guide covering current, overload, speed range, cooling, insulation, cable length, braking and load behaviour.

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Motor Braking Methods: Coast, Ramp, DC and Resistor

How to choose a motor stopping method by reviewing process time, regenerated energy, heating, safety and mechanical stress.

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Motor Encoder Wiring, Shielding and Grounding

A commissioning guide to encoder cable routing, shield termination, supply reference and signal verification on motor drive systems.

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Motor Restart After a Power Dip: Residual Speed and Process Risk

Review contactor dropout, residual speed, bus recovery, VFD restart and process permissives before enabling automatic motor restart.

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PI Controller Tuning for Motor Drives: A Practical Starting Method

How motor-drive engineers set PI gains, why modulus optimum is only a starting point, and what must be verified during commissioning.

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VFD Retrofit: Keep the Induction Motor or Move to PM?

An existing variable-speed drive is five parts, not one. Which of them a motor swap puts back in play is what decides this — not the motor comparison.

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Speed Loop vs Current Loop: Why Motor Drives Use Nested Control

A clear explanation of cascaded motor-drive control, including the roles of the current loop, speed loop, limits and commissioning order.

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VFD Flying Start for High-Inertia Loads

What to check before enabling flying start or catch-on-the-fly control for fans, centrifuges and other rotating loads.

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VFD Min and Max Frequency Settings for Motors

How to set VFD minimum and maximum frequency from motor cooling, mechanical speed limit, load torque and process requirements.

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Output Reactors for VFD-Fed Motors

When an output reactor may help a VFD motor circuit and what must be checked for cable, switching, voltage drop and drive compatibility.

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VFD Skip Frequencies and Mechanical Resonance

How to identify and document restricted speed bands without hiding a structural or mechanical problem in a VFD-driven system.

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Comparing across families, or filtering by power, voltage and protection?See the full range with filters. If the duty falls outside what these series publish, tell us the application — custom builds cover ratings the standard series do not.