Optiflow Diagram

Total Control

A single ‘Master’ drive acts to control and monitor system operation. Control connections are made to this drive only, saving installation time and reducing costs.

Simple Connection

Additional drives connected on the system require a single RJ45 connection and basic commissioning, leading to time savings and simplified installation.

Flexible Solution

The system can operate with up to five pumps in any configuration, e.g. Duty / Assist / Standby. Duty pumps are automatically rotated, ensuring maximum service life and system efficiency.

Consistent Flow

The required pressure and flow levels are maintained regardless of how many pumps are required. When demand increases, additional pumps are automatically brought on stream to assist and are switched off again when not required.

Reduced Downtime

In the event of a fault, or if a pump needs to be isolated for maintenance, the system will automatically continue to operate with the remaining available pumps. The mains power can even be completely isolated from the Master drive without affecting operation of the Slave drives.

Normal vs Reduced Operation

Avoid Pump Downtime

Blockage Detect/Clear

Optidrive Eco can detect pump blockages and trigger a programmed cleaning cycle to automatically clear them, preventing downtime.

Dry Run Protection

Optidrive Eco can evaluate a pump’s speed/power and shut it off or warn when the pump starts to run dry, protecting it from heat/friction damage.

Motor Preheat Function

Optidrive Eco features a motor preheat function to help ensure moisture is not permitted to collect on the motor in periods of inactivity and prior to motor start up. In addition, the motor preheat function can be used to keep condensation from developing on the motor as the motor cools down immediately following a stop. The feature is fully configurable, meaning the pump can be always available the instant it is required.

Pump Stir Cycle

Triggered by a settable period of inactivity, a configurable cleaning cycle can be run to clear sediment, ensuring the pump is ready to run when needed.

Drive Controlled Bypass

Drive Controlled Bypass

Optidrive Eco can operate as a bypass controller when installed as part of a bypass circuit. Activation of Bypass mode can be determined intelligently by the Optidrive Eco drive based on a command from the building management system. Additionally the drive can be set to automatically select bypass mode when entering into a trip condition ensuring minimal disruption to service.

Pump Prime with Burst Pipe Protection

Pump prime mode allows starting of the pump in a safely controlled manner, to ensure consistent filling and pressurisation of pipe work and systems. Low pressure warnings are ignored during priming to allow the system to prime correctly, whilst a failsafe timeout prevents the pump from continuing to run in the event of a failure to prime. This helps to prevent the effects of water hammering (such as bursting water pipes) or damage to fountain / sprinkler heads.

The time limit, set for pump prime mode to complete, means that the pressure in the system must reach the minimum level within the set time. Failure of the system to pressurise would indicate a leak or burst pipe within the pump system and result in the Optidrive Eco shutting down the pump. During normal operation the system pressure is still continuously monitored against the minimum level so that a burst pipe during normal operation will likewise result in the drive tripping ‘low pressure’ and shutting the pump down.

Optidrive Eco

Pump Control

  • All drives operate at variable speed for maximum energy saving.
  • Equal run time sharing across every pump.
  • Automatic system reconfiguration in the event of a pump fault (including the master pump).
  • Continued system operation when drives are individually powered off (including the master drive).
  • Communication and +24V control voltage shared between drives via a standard RJ45 patch lead.
  • Independent maintenance indicators for each pump.
  • Any pump can be switched to Hand operation a the touch of a button, and will automatically rejoin the network when switched back to Auto.
  • For waste water applications each pump can be set for blockage/ragging detection and activate an automatic de-ragging/pump cleaning cycle.
  • Optional mains isolator with lock-off for safe pump maintenance.
  • Optiflow function configured through simple parameter set-up and intelligent drive self configuration.
Application Photos

Optidrive Eco Features

A range of compact AC Variable Frequency Drives dedicated to pumping and HVAC systems.
on board as standard

Multiple Pump Control

BACnet Interface

IP55 Enclosures

Dust-tight and ready to washdown.

In-built PID Controller

Accurately maintain pressure or temperature setpoint.

Control Mode

  • Sensorless Vector Speed Control
  • PM Vector Control
  • BLDC Control
  • Synchronous Reluctance

Sensorless Vector Control for all Motor Types

  • Induction Motors (IM)
  • Permanent Magnet Motors (PM)
  • Brushless DC Motors (BLDC)
  • Synchronous Reluctance Motors (SynRM)
  • Line Start PM Motor (LSPM)

Options & Software

A range of external EMC filters, brake resistors, input chokes and output filters are available.

Multiple Pump Control

Rapid commissioning tool.

Pump Control

  • Controlling Your Pump System
  • Optiflow Multi-pump Control
  • Pump Staging Cascade Control
  • Optimising Efficiency
  • Hand / Auto
  • Avoid Pump Downtime

  • Blockage detect/clear
  • Dry Run Protection
  • Motor Preheat Function
  • Pump Stir Cycle
  • Pump Prime with Burst Pipe Detection
  • Drive Controlled Bypass

HVAC Building Services

  • Controlling Your HVAC System
  • Multiple Fan Operation
  • Building Automation
  • Optimising Efficiency
  • Hand / Auto

  • Belt Break Detection
  • Noise Reduction
  • Resonance Avoidance
  • Drive Controlled Bypass

Embedded control technology for multiple pump systems

Building Automation

Comfortable safe & sustainable environment

Enclosure Options

Optidrive Eco is available in a range of IP20, IP55 & IP66/NEMA 4X enclosures.


  • Compact, robust enclosures for panel/cabinet mounting
  • Sizes 2-5, 6A, 6B & 8 cover power ranges up to 250 kW/450 HP
  • Operates up to 50°C
  • Keyhole mounts for fast installation
  • Maintenance Interval Timer and Service Indication

on-board standard

Fast Connection

5mm rising clamp terminals with captive screws

Quick Reference

Integrated help card

Simple Installation

DIN rail and keyhole mounting options

Integrated Cable Management

High Quality Long-Life Fans

Pluggable Terminals

Pluggable Modules

Multi-language TFT display

Hand/Auto Keypad

Contractor-style Power Arrangement


  • Compact, robust enclosures for panel/cabinet mounting
  • Sizes 4-7 cover power ranges up to 160 kW/250 HP
  • Operates from 10°C to 50°C

With a selection of IP55 and IP66 enclosures, Optidrive Eco HVAC is well suited to harsh environments, or where cabinet and cabling costs need to be reduced.

IP66/NEMA 4X Outdoor

Outdoor rated enclosed drives also suitable for direct machine mounting, dust tight and ready for washdown duty

  • Outdoor rated tough polycarbonate enclosure
  • Sizes 2-3 up to 11 kW/15HP
  • Dust tight and ready to washdown
  • Conformally coated PCBAs as standard

IP66/Nema 4X outdoor rated

Built with tough polycarbonate plastics specifically designed to withstand degredation by ultra-violet (UV), greases, oils and acids. Also robust enough not to become brittle at -20oC.

Locally Customisable

Flat front to terminal cover with mounting points for switches and an internal PCB

Coated Heatsink as Standard

Ideal for hygiene-based operations requiring washdown — such as food and beverage

  1. Easy to wire
  2. 2 x RJ45 ports - eliminate the need for a splitter
  3. Easily accessible EMC disconnect

Dust-Tight Design

Install directly on your processing equipment and be sure of protection from dust and contaminants.

Washdown Ready

With a sealed ABS enclosure and corrosion resistant heatsink, the Optidrive Eco IP66 is ideal for high-pressure washdown applications.

Switched Models

Connect the supply and then use the Switch and Pot to run.

IP66/NEMA 4X Indoor

  • Sizes 2-3 up to 7.5 kW/10 HP
  • Dust tight and ready to washdown


Install directly on your processing equipment and be sure of protection from dust and contaminants.

Ready for Washdown

Sealed ABS enclosures and corrosion resistant heatsink make these models ideal for high-pressure washdown applications.

Browse Downloads

File Type
Optidrive Eco Pump Brochure
User Guides
File Type
Optidrive Eco User Guide

Optidrive Eco Specifications

Size & Weight

Enclosure Options

IP20 Size 2 Size 3 Size 4 Size 5 Size 6A Size 6B Size 8
Height mm (in) 221 (8.7) 261 (10.28) 418 (16.46) 486 (19.13) 614 (24.17) 726 (28.58) 995 (39.17)
Width mm (in) 110 (4.33) 131 (5.16) 160 (6.3) 222 (8.74) 286 (11.26) 330 (12.99) 482 (18.98)
Depth mm (in) 185 (7.28) 205 (8.07) 240 (9.45) 260 (10.24) 320 (12.6) 320 (12.6) 480 (18.9)
Weight kg (lb) 1.8 (3.97) 3.5 (7.72) 10.4 (22.93) 19.9 (43.87) 42.5 (93.7) 43.5 (95.9) 112 (246.92)
Fixings 4 x M4 4 x M4 N/A
Packaged Height mm (in) 265 (10.43) 325 (12.8) 340 (13.39) 356 (14.02) 380 (14.96) 380 (14.96) 692 (27.24)
Packaged Width mm (in) 145 (5.71) 165 (6.5) 280 (11.02) 336 (13.23) 375 (14.76) 375 (14.76) 642 (25.28)
Packaged Depth mm (in) 230 (9.06) 260 (10.24) 560 (22.05) 658 (25.91) 780 (30.71) 785 (30.91) 1050 (41.34)
Packaged Weight kg (lb) 1.9 (4.19) 3.7 (8.16) 12.4 (27.34) 22.4 (49.38) 45.7 (100.75) 46.7 (102.96) 122 (268.96)

IP55 Size 4 Size 5 Size 6 Size 7
Height mm (in) 450 (17.72) 540 (21.26) 865 (34.06) 1280 (50.39)
Width mm (in) 171 (6.73) 235 (9.25) 330 (12.99) 330 (12.99)
Depth mm (in) 252 (9.92) 270 (10.63) 330 (12.99) 360 (14.17)
Weight kg (lb) 12 (26.46) 23.1 (50.93) 55 (121.25) 89 (196.21)
Fixings 4 x M8 4 x M8 4 x M10 4 x M10
Packaged Height mm (in) 510 (20.08) 595 (23.43) 980 (38.58) 1420 (55.91)
Packaged Width mm (in) 240 (9.45) 350 (13.78) 450 (17.72) 540 (21.26)
Packaged Depth mm (in) 330 (12.99) 375 (14.76) 450 (17.72) 560 (22.05)
Packaged Weight kg (lb) 14 (30.86) 25 (55.12) 56.5 (124.56) 97 (213.85)

IP66 Outdoor Size 2 Size 2A Size 3 Size 4
Height mm (in) 257 (10.12) 257 (10.12) 310 (12.2) 360 (14.17)
Width mm (in) 188 (7.4) 188 (7.4) 211 (8.31) 240 (9.45)
Depth mm (in) 186 (7.32) 211 (8.31) 235 (9.25) 271 (10.67)
Weight kg (lb) 3.5 (7.72) 6.6 (14.55) 9.5 (20.94)
Fixings 4 x M4 4 x M4 4 x M4 4 x M4
Packaged Height mm (in) 215 (8.46) 215 (8.46) 305 (12.01) 325 (12.8)
Packaged Width mm (in) 235 (9.25) 235 (9.25) 270 (10.63) 295 (11.61)
Packaged Depth mm (in) 375 (14.76) 375 (14.76) 440 (17.32) 425 (16.73)
Packaged Weight kg (lb) 4.2 (9.26) 4.2 (9.26) 7.6 (16.76) 11.5 (25.35)

IP66 Indoor Size 2 Size 3
Height mm (in) 257 (10.12) 310 (12.2)
Width mm (in) 188 (7.4) 211 (8.31)
Depth mm (in) 260 (10.24) 273 (10.75)
Weight kg (lb) 5.6 (12.35) 6.8 (14.99)
Fixings 4 x M4 4 x M4
Packaged Height mm (in) 400 (15.75) 308 (12.13)
Packaged Width mm (in) 315 (12.4) 272 (10.71)
Packaged Depth mm (in) 370 (14.57) 454 (17.87)
Packaged Weight kg (lb) 6.6 (14.55) 8.2 (18.08)

Technical Specification

Input Ratings Supply Voltage 200 – 240V ± 10%
380 – 480V ± 10%
500 – 600V ± 10%
  Supply Frequency 48 – 62Hz
  Displacement Power Factor > 0.98
  Phase Imbalance 3% Maximum allowed
  Inrush Current < rated current
  Power Cycles 120 per hour maximum, evenly spaced
Output Ratings Output Power 230V 1Ph. Input: 0.75–2.2kW (1–3HP)
230V 3Ph. Input: 0.75–75kW (1–100HP)
400V 3Ph. Input: 0.75–250kW
460V 3Ph. Input: 1–350HP
575V 3Ph. Input: 0.75–110kW (1–150HP)
  Overload Capacity 110% for 60 seconds
165% for 4 seconds
  Output Frequency 0 – 250Hz, 0.1Hz resolution
  Typical Efficiency > 98%
Ambient Conditions Temperature Storage : −40 to 60°C
Operating : −10 to 50°C
  Altitude Up to 1000m ASL without derating
Up to 2000m maximum UL approved
Up to 4000m maximum (non UL)
  Humidity 95% Max, non condensing
  Vibration Conforms to EN61800-5-1 2007, IEC 60068-2-6
Enclosure Ingress Protection IP20, IP55, IP66
Programming Keypad Built-in keypad as standard
Optional remote mountable keypad
  Display Built-in multi language text display
  PC OptiTools Studio
Control Specification Control Method Eco Sensorless Vector
Open Loop Permanent Magnet Vector
Open Loop BLDC Vector
Open Loop Synchronous Reluctance Vector
  PWM Frequency
4 – 32kHz Effective
  Stopping Mode Ramp to stop: User Adjustable 1–600 secs
Coast to stop
  Braking AC Flux Braking
  Skip Frequency Single point, user adjustable
  Setpoint Control
Analog Signal
0 to 10 Volts / 10 to 0 Volts
−10 Volts to +10 Volts
0 to 20mA / 20 to 0mA
4 to 20mA / 20 to 4mA
Motorised Potentiometer (Keypad)
Modbus RTU
Fieldbus Built in
BACnet Application Specific Controller
9.6 – 76.8 kbps selectable
Data Format: 8N1, 8N2, 8O1, 8E1
Modbus RTU
9.6 – 115.2 kbps selectable
Data Format: 8N1, 8N2, 8O1, 8E1
Plug-in BACnet/IP interface
Dual LAN ports
Device Level Ring
Modbus TCP
I/O Specification Power Supply 24 Volt DC, 100mA, Short Circuit Protected
10 Volt DC, 10mA for Potentiometer
  Programmable Inputs 5 Total as standard (optional additional 3)
3 Digital (optional additional 3)
2 Analog / Digital selectable
  Digital Inputs Opto – Isolated
8 – 30 Volt DC, internal or external supply
Response time < 4ms
  Analog Inputs Resolution: 12 bits
Response time: < 4ms
Accuracy: < 1% full scale
Parameter adjustable scaling and offset
  PTC Input Motor PTC / Thermistor Input
Trip Level : 3kΩ
  Programmable Outputs 2 Total
1 Analog / Digital
1 Relay
  Relay Outputs Maximum Voltage: 250 VAC, 30 VDC
Switching Current Capacity: 5A
  Analog Outputs 0 to 10 Volts / 10 to 0 Volts
0 to 20mA / 20 to 0mA
4 to 20mA / 20 to 4mA
Application Features PID Control Internal PID Controller
Multi Setpoint Select
Standby / Sleep Mode
Boost Function
  Fire Mode Bidirectional
Selectable Speed Setpoint (Fixed / PID / Analog / Fieldbus)
  Load Monitoring High Current Protection (Fan / Bump Blocked)
Low Current Protection (Broken Belt / Shaft)
Pump Blockage Detection with Cleaning
  Duty / Assist / Standby Built-in Multi Pump Support
Autotmatic Changeover on Fault
Automatic Changeover on Run Time
Fully Redundant
Pump Control Features Pump Blockage Detection Pump load monitoring with autotune function, user configurable
  Pump Cleaning Adjustable Bi-Directional Pump Cleaning Cycle operation
  Multi-pump Control Control of fixed speed assist pumps (with cascade control module)
Control of Duty, Assist and Standby variable speed pumps via internal Master – Slave network
  Pump Stir Automatic pump stir to prevent sediment build-up
Maintenance & Diagnostics Fault Memory Last 4 Trips stored with time stamp
  Data Logging Logging of data prior to trip for diagnostic purposes:
Output Current
Drive Temperature
DC Bus Voltage
  Maintenance Indicator Maintenance Indicator with user adjustable maintenance interval
Onboard service life monitoring
  Monitoring Hours Run Meter
Resettable & Non Resettable kWh meters
Cooling Fan Run Time
Standards Compliance Low Voltage Directive 2014/35/EU
  EMC Directive 2014/30/EU
  Additional Conformance UL, cUL, EAC, RCM
  Harmonic Currents IEC61000-3-12
  Environmental Conditions Designed to meet IEC 60721-3-3, in operation:
IP20 Drives: 3S2/3C2
IP55 & 66 Drives: 3S3/3C3