VFDs & Servo Drives
At AMPS, we don’t just sell drives — we help you select, size, and integrate the right solution, working directly with your engineers, purchasing team, and plant operations.
Variable Frequency Drives & Servo Systems — Precision Motor Control for Industrial Applications
Whether you’re engineering a new system, sourcing drives for a retrofit, or looking to cut energy costs, AMPS has the VFD solution you need. We carry two industry-leading brands — Invertek Drives and Unitronics — backed by deep application expertise, real integration capabilities, and inventory that’s actually in stock when you need it.
Variable frequency drives give you precise control over motor speed and torque, reducing energy consumption, extending motor life, and eliminating the mechanical and electrical stress of across-the-line starting. From simple pump and fan control to demanding servo motion applications, the right drive can dramatically improve process efficiency and system uptime.
WHAT VFDs DO
- Precise control over motor speed & torque
- Reduce energy consumption
- Extend motor life
- Eliminate inrush current & mechanical shock
- Improve process efficiency & uptime
COMMON APPLICATIONS
- Three-phase pump & fan control
- Multi-axis motion control
- Retrofit & energy savings projects
- New system builds
- Process automation
Invertek Optidrive VFDs
Invertek Drives is a UK-based VFD manufacturer with a global presence in over 80 countries, honored with the King’s Award for Enterprise in International Trade. All Optidrive products are designed and manufactured in the UK to ISO 9001 and ISO 14001 standards, UL and CE certified, and backed by up to a 5-year warranty. AMPS carries three key Invertek product lines:
Optidrive E3 — General Purpose Drive (0.37–37 kW / 0.5–50 HP)
The Optidrive E3 is Invertek’s proven general purpose VFD — compact, reliable, and easy to use. With just 14 parameters for basic setup, a built-in Category C1 EMC filter, application macros for industrial, pump, and fan modes, and sensorless vector control for all motor types.
Optidrive P2 — High Performance Drive (0.75–250 kW / 1–400 HP)
Rated to IP66/NEMA 4X, with 150% overload for 60 seconds, a dedicated hoist mode, integral brake transistor, and safe torque off. For cranes, hoists, material handling, mining, water/wastewater, and heavy industrial applications.
Optidrive ECO — HVAC & Pump Drive (0.75–250 kW / 1–400 HP)
Purpose-built for HVAC and pumping. Built-in BACnet communication, Optiflow multiple pump control, pump staging cascade control, HVAC-specific modes including belt break detection and resonance avoidance, and IP66/NEMA 4X rating.
What All Invertek Optidrives Offer
- Designed & manufactured in the UK — ISO 9001 & ISO 14001 certified
- UL, CE, and cULus certified
- Up to 5-year warranty on all Optidrive products
- Sensorless vector control for induction, PM, BLDC, and SynRM motors
- Modbus RTU on board as standard
- Sales and support in over 80 countries worldwide
Unitronics VFDs
Unitronics VFDs are designed to integrate seamlessly with Unitronics PLCs and HMIs — giving machine builders and OEMs a single-source solution for control and automation. Available across a range of power ratings, Unitronics VFDs deliver reliable AC motor control with simplified commissioning.
What Unitronics VFDs Offer
- Native integration with Unitronics PLC+HMI platforms
- Simplified commissioning within the Unitronics environment
- Reliable AC motor control for OEM machine building
- Cost-effective all-in-one: PLC + HMI + VFD from a single vendor
- Deep application expertise from AMPS as a top Unitronics distributor
Unitronics Servo Drives & Motors
Unitronics’ servo and motion control solution provides precise, dynamic control for demanding positioning and motion applications. Fully integrated within the Unitronics ecosystem and programmed through UniLogic, the servo system is engineered for OEM machine builders.
What Unitronics Servos Offer
- Integrated AC servo drives and motors
- Full motion control within the UniLogic programming environment
- EtherCAT-based communication for high-speed, multi-axis control
- Designed for OEM machine building and automation applications
- Single-vendor solution: PLC + HMI + VFD + Servo from Unitronics
At AMPS, we work directly with engineers, purchasing teams, and plant managers to make sure you get the right drive solution for your application — not just whatever ships fastest. With deep inventory, hands-on technical support, and real integration experience, we’re built to keep your projects moving.
Invertek VFDs
Unitronics VFDs
