Fairford HFE-2 User manual

Innovation in soft start technology
HFE-2
USER MANUAL
MAN-HFE-002. Version 01

HFE-2 Soft Start User Manual
MAN-HFE-002. Version 01. 18/08/2016
1
HFE-2 user guide
Fairford Electronics Ltd
Bristow House
Gillard Way, Ivybridge
PL21 9GG
UK
www.fairford.com
© 2016 by Fairford Electronics, all rights reserved
Copyright subsists in all Fairford Electronics deliverables including magnetic, optical and/or any other soft
copy of these deliverables. This document may not be reproduced, in full or in part, without written
permission. Enquiries about copyright of Fairford Electronics deliverables should be made to Fairford
Electronics Ltd. If, by permission of the copyright owner, any part of this document is quoted, then a
statement specifying the original document shall be added to the quotation. Any such quotation shall be
according to the original (text, figure or table) and may not be shortened or modified.
The manufacturer does not assume any liability, express or implied, for any consequences resulting from
inappropriate, negligent or incorrect installation, application, use or adjustment of the product or circuit
design, or from mismatching of a soft starter to a motor

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HFE Energy Saving soft starters are designed to control single phase AC motors. Operation is fully
automatic, a low starting voltage is applied to the motor as soon as the supply is switched on. The internal
automatic ramp control is immediately activated and raises the voltage progressively, causing the motor to
accelerate smoothly.
At the end of the ramp period, the motor is operated in Energy Saving (iERS) mode and the HFE
continuously regulates the voltage to match mechanical load. Energy consumption at light loads is reduced,
motor winding and case temperatures are lowered, motor life is extended, noise levels are reduced and
power factor is improved.
Two LED’s on the front of the unit indicate when the POWER supply is connected and when the unit is in
iERS mode. As energy consumption is reduced the iERS LED flashes at a slower rate.
The HFE remains in circuit until the supply is disconnected. The HFE automatically resets and is ready for
the next start.
Important information
Installers should read and understand the instructions in this guide prior to installing, operating and
maintaining the soft start. The following symbols may appear in this guide or on the soft start to warn of
potential hazards or to draw attention to certain information.
Dangerous Voltage: Indicates the presence of a hazardous voltage which could result in
personal injury or death.
Warning/Caution: Indicates a potential hazard. Any instructions that follow this symbol should
be obeyed to avoid possible damage to the equipment, and personal injury or death.
Protective Earth (Ground): Indicates a terminal which is intended for connection to an
external conductor for protection against electric shock in case of a fault.
Caution Statements: The examples and diagrams in this manual are included solely for illustrative
purposes. The information contained in this manual is subject to change at any time and without prior
notice. In no event will responsibility or liability be accepted for direct, indirect or consequential damages
resulting from the use or application of this equipment.
Short Circuit: Fairford soft starts are not short circuit proof. After severe overload or short circuit, the
operation of the soft start should be fully tested by an authorised service agent
HFE soft starts contain dangerous voltages when connected to the mains supply. Only qualified
personnel that have been completely trained and authorised, should carry out installation,
operation and maintenance of this equipment. Installation of the soft start must be made in accordance
with existing local and national electrical codes and regulations and have a minimum protection rating. It is
the responsibility of the installer to provide suitable grounding and branch circuit protection in accordance
with local electrical safety codes. This soft start contains no serviceable or re-usable parts.
Optimising Motor Control (iERS)
Safety

HFE-2 Soft Start User Manual
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4/T 2/N 1/N 3/L
Nm lbs-inch
2 18
iERS LED
Ramp time
J1 - iERS ON
J4 - Refrigeration
mode ON
mm2
1.5-25
AWG
12-4
mm
13
mm
0.8x4
195
215
228
59.2
97.5
105
135
Earth/Ground
M5 Screw
Supply Live
Supply Neutral
Motor Neutral
Motor Live
4/T 2/N 1/N 3/L
40.2
40.2
Three off Ø21mm
holes for cable glands
The system may be configured to allow for auto restart controlled from contacts on
the motor side of the unit. Users and operators must always take all necessary
precautions to prevent damage to equipment and to prevent the risk of injury to
personnel working on or near the motor and driven equipment.
MOUNTING
The HFE module must be
fixed to a vertical surface.
To ensure free air
movement, a minimum
clearance of 40mm must
be maintained above and
below the unit.
Mechanical Details

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Start
Cap
The soft starter is normally inserted into the circuit between the motor and whatever switchgear is normally
used for isolation or switching. The unit can also be fitted before switchgear so that it can be installed in the
supply to equipment which has its own mechanical control. This feature allows for easy installation on
equipment such as refrigeration where the need to disturb internal wiring is avoided.
The terminations are made with industry standard cage clamp screw terminals directly onto the circuit
board on all units.
The incoming power supply is connected to the terminals marked ‘1/N’ and ‘3/L’. For EMC compliance it is
important that the live circuit is connected to 3/L and the neutral circuit to 1/N.
Outgoing connections from the HFE are taken from the terminals marked ‘4/T’ and ‘2/N’ to the motor or
load input terminals (see diagram). Ensure that a good connection is made to the earth terminals provided.
Fuses or other type of short-circuit protection are required for protection against a cable or motor terminal
box fault. These must be fitted externally and on the supply side of the unit. See “Specifications” section for
recommended fuse type and cut-out device.
Set the ramp time potentiometer to midway to approx. 2 seconds and start the system. If the motor turns
instantly when the soft starter is energised and accelerates satisfactorily then no further adjustment is
required. If the rate of acceleration is too great, stop the unit and turn the ramp time potentiometer
clockwise then restart. Adjust anti–clockwise for a shorter ramp time setting to increase the rate of
acceleration. *The motor should turn instantly when the soft starter is energised. If not, rearrange the
connection of the starting capacitor as described above.
Run
Cap
Supply Live
Supply Neutral
Motor Neutral
Motor Live
4/T 2/N 1/N 3/L
Centrifugal or voltage
switch controls start
Capacitor
*Connect Start Capacitor to
Supply Live for High Torque or
Heavy starting
Electrical Wiring
Supply Live
Supply Neutral
Motor Neutral
Motor Live
ML MNN L
Note:
On some HFE-2
variants,
terminals may
have alternative
markings
(see diagram)
Motor connected for
capacitor Start - Run
Neutral
Live 110/230Vac
Extra starting torque may be needed for loads which have a particularly ‘sticky’ starting
characteristic. This can be achieved by rearranging the internal connection of the starting capacitor,
bringing the connection out and connecting to the supply side of the starter as shown.
Operation

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Rating Table
Load
Amps
(Ie)
Utilisation
Category
Start
Duty
Up to
Starts/Hr
Current
(Amps)
Time
(Secs)
30
AC53a
90
3
99%
60
IEC Rating Index
Specifications
Pedestal Voltage:
Start Time:
Terminations:
Ambient Temperature:
Enclosure:
Rated Operational Voltage:
Recommended cut–out device:
Rated insulation voltage:
Rated impulse withstand voltage:
Short circuit co–ordination:
Fuse Type:
Form designation:
Pollution Degree:
EMC Emissions:
EMC Immunity:
Design standards:
Fixed at ~15%.
Continuously variable from 0.5S -5S.
Cage clamp terminals suitable for 1.50mm2 (12awg)
to 25mm2(4 awg) solid or stranded wire
0°C to 40°C without derating.
IP20 with standard cover:
Ue: 110 to 230V ac (–15% +10%), 50/60Hz
32A rated MCB, Trip Characteristic “C“. Form 1
Ui: 250V
Uimp: 4kV (1.2 / 50μs)
Type 1 , Iq: 5kA when protected by recommended Fuse
Bussman 170M3113 or Ferraz 6,6 URD 30 D098A 0125
Form 1
2
EN 55011 Environment Class B
EN 60947-4-2
IEC 60947–4–2: “AC Semiconductor Motor Controllers and
Starters”.
Ratings and Specifications
Duty Cycle (F-S)
99-10 = 99% duty cycle - 60 cycles/hr
Rated Operational Current (Ie)
30A = Rated Operational Current
Overload Current Profile (X-Tx)
4-3 = 3 times rated current (Ie) for 3s
Utilization Category
AC-53a = controller semiconductors provide squirrel-cage motor Start, Run, and Stop control
30A : AC-53a: 3 –3 : 99-60

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Notes

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Fairford Electronics Ltd
Bristow House
Gillard Way, Ivybridge
PL21 9GG
UK
www.fairford.com