Fairford iERS HFE-1 User manual

Innovation in soft start technology
HFE-1
USER MANUAL
MAN-HFE-01. Version 01

HFE-1 Soft Start User Manual
MAN-HFE-01. Version 01. 16/08/2016
1
HFE-1 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

HFE-1 Soft Start User Manual
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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

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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.
Mechanical Details
Ramp time
Jumper Functions
J1 –Enable iERS
J2 –Fit when using with refrigeration
J3 –Remove if motor has ‘potential relay’
Electrical Connections
Max. Torque 0.5NM
(4lbs-inch)
Earth/Ground
Supply Live
Supply Neutral
Earth/Ground
Motor Neutral
Motor Live
1/N 3/L 2/N 4/T
Power ON
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.
50
29
iERS ON
29
206
64
68
68
~218 overall
178
195
2 off M16 Euro index cable
glands suitable for Ø4mm to
Ø10mm cable
Use 21mm spanner to
tighten glands
Cable cross section 0.75mm2
to 2.5mm2
46
All dimensions mm

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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. For running currents up to and including 10 Amps
the unit is rated for continuous duty.
Start currents must never exceed 60A
Start
Cap
Run
Cap
Live 110/230Vac
Neutral
Earth/Ground
Electrical Wiring
Earth/Ground
Supply Live
Supply Neutral
Earth/Ground
Motor Neutral
Motor Live
1/N 3/L 2/N 4/T
Motor connected for
capacitor Start - Run
Centrifugal or voltage
switch controls start
Capacitor
*Connect Start Capacitor to
Supply Live for High Torque or
Heavy starting
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 to the supply side of the starter as shown.
Earth/Ground
Supply Live
Supply Neutral
Earth/Ground
Motor Neutral
Motor Live
N L MNML
Note:
On some HFE-1
variants,
terminals may
have alternative
markings
(see diagram)
Operation

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Rating Table
Load
Amps
(Ie)
Utilisation
Category
Start
Duty
Up to
Starts/Hr
Max. Fuse
Rating
*22x58mm
class gR/aR
Cut-out
Device
Current
(Amps)
Time
(Secs)
10
AC53a
30
4
99%
60
32A
10A MCB
Trip
Characteristic
Type “C”
40
3
99%
10
* 13A fused plug may be used for no more than a 5A load at duties indicated in the Rating Table
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 0.75mm2 (18 awg)
to 2.5mm2 (12 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
10A rated MCB, Trip Characteristic “C“.
Ui: 250V
Uimp: 4kV (1.2 / 50μs)
Type 1 , Iq: 5kA when protected by recommended Fuse
See rating table.
Form 1
2
EN 55011 Environment 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 - 10 cycles/hr
Rated Operational Current (Ie)
10A = Rated Operational Current
Overload Current Profile (X-Tx)
4-3 = 4 times rated current (Ie) for 3s
Utilization Category
AC-53a = controller semiconductors provide squirrel-cage motor Start, Run, and Stop control
10A : AC-53a: 4 –3 : 99-10

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Notes

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