Features and Benefits

Automatic Set-Up

Caters for the starting and stopping ramp profile for a specific application with no further adjustment needed, pluss programming of all the relays, inputs and outputs.

Patented "Fairford System" of Energy Optimising

Improves partial load power factor (Cos Phi) saving energy, carbon emmissions from the generating source and cost on lightly loaded applications

Manual Adjustment

Enables the Soft Starter to be rapidly tailored to any application, saving time.

Unit Records History of Last 5 Trips

Assists in determining causes of any failure, saving on investigating time.

Option of Modbus Comms and Remote Keypod Operation

Can be linked to a PLC for remote control using Modbus Comms. Using the Remote Keypod can add versatility to allow one keypod to control more, up to 8 units, saving on cost.

In The Delta Capability

Could allow a smaller unit to be used on an application, saving on cost.

Technical Data

Current
9 - 1800A (4 - 1050kW @400V)

Operational Voltage
230 - 460 VAC rms (-15% +10%)
400 - 575 VAC rms (-15% +10%)
500 - 690 VAC rms (-15% +10%)

Rated Frequency
50 - 60 Hz +/-2 Hz

Start Time
1 to 255 Seconds

Stop Time
0 to 255 Seconds

Ambient Temperature
0°C to 40°C.
Above 40°C de-rate linearly by 2% FLC per °C to a maximum of 60°C

Altitude
1000m
Above 1000m de-rate by 1% FLC per 100m to a maximum of 2000m

Options

QFE: Size 1 (from 9A - 146A)

QFE: Size 2 (from 174A - 370A) 

QFE-0 (from 400A - 1800A) 

Adjustable Over-Current "Shear Pin" Protection

Can significantly reduce the maintenance time in comparison to mechanical "Shear Pins", reducing down time.

Adjustable Overload

Protects the Soft Starter against damage due to over currents and therefore replacement or repair costs.

Six Button Keypad, 2 Line 32 Character LCD Display

Saves time programming and fault-finding because it displays in English rather than short-codes.Start/Stop capability, continuous display of motor phase current and control status - starting, stopping, full volts, current limitation, overload indication and fault indication 

Smooth step-less acceleration of motors to full speed with reduction of inrush currents  

Prevents or reduces breakages of belts, gears, chains, motor mountings and eliminates shock loading on equipment. 

Optional Loads; Static Loads, Resistive (Heaters) and Inductive (Transformers)

Allows the unit to be used on a variety of differing applications so one unit is highly versatile and thereby saving money.

Index Rating
QFE 9 to QFE 105:    
AC53a: 5-4:99-10
AC53a: 3-35:99-10

QFE 146 to QFE 202:
AC53a: 4-6:99-10
AC53a: 3-35:99-10

QFE 242 to QFE 900:
AC53a: 4-6:60-3
AC53a: 3-35:60-3  

Ingress Protection
IP20 or IP00

Design Standards
IEC 60947-4-2;EN 60947-4-2 ‘AC Semiconductor Motor Controllers and Starters’.

QFE and QFE-G bearing the UL Listing mark are UL Listed to U.S. and Canadian safety standards 

Remote Keypod

For Fairford Soft Start Motor Controllers 

Modbus Comms

Fairford Modbus Communication Module 

Auxiliary Function Card

Two 0 - 10V Analogue Outputs
One 0 - 21V DC Input
One 4 - 20mA Input
One Thermister Input
Two Programmable Output Ralays
Two Programmable Input Relays