HFE2 SAFTRONICS, HFE2 Datasheet - Page 3

• Manufacturer Part Number: HFE2
• Description: SOFTSTARTER, HFE2, 30A
• Manufacturer: SAFTRONICS

Specifications of HFE2

• No. Of Phases: Single
• Current Rating: 30A
• Approval Bodies: IEC 60947-4-2
• External Depth: 97.5mm
• External Length / Height: 228mm
• External Width: 135mm
• Ip/nema: RoHS Compliant
• For Use With: 32A MCB Trip Characteristic Type "C"

WIRING
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 it’s 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 mounted on the
heatsink.
The incoming power supply is connected to the terminals marked ‘L’ and ‘N’. For EMC compli-
ance it is important that the line circuit is connected to L and the neutral circuit to N. Outgoing
connections from the HFE are taken from the terminals marked ‘ML’ and ‘MN’ 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.
Operation
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 shown in fig 1
Earth/Ground
Live
Neutral
Motor connected for
Capacitor Start - Run
110/230V~
L
N
M
N
M
page 3 M-2025-F 100401
L
Connect Start Capacitor
to Supply live for
High Torque or Heavy starting
Run
Cap
Start
Cap
Centrifugal or voltage
switch controls
start Capacitor
Typical connection
for the HFE.
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.