GB
1. DESCRIPTION OF LOAD LIMITER HF 31/1/A2
• The load limiter HF 31/1/A2 is a mechanical load
limiter for wire ropes operating on the principle of
a potential-free contact which is tripped when
the tension in the wire rope has exceeded the
preset limit.
• The contact is automatically reset once the
tension in the wire rope is 200 daN (hysteresis
value of contact) below the set limit.
1.1. Area of application
This load limiter is specially designed to manage one or two safety thresholds on small and medium
capacity overhead travelling cranes.
1.2. Operating principle
Deflection of the wire rope exerted by the load limiter produces a tangential force which is proportional
to the force exerted on the wire rope when pulled.
Deformation of the load limiter body causes the micro switches integrated in the load limiter to open.
1.3. Technical specifications
Factory calibration option: for each threshold, indicate wire rope di force on strand.
1.4. Designation, characteristics and outline dimensions
1.5. Applicable standard: 2006/42/CE
Installation
: directly on idle strand.
Repeatability
: 1 % EM.
Measurement
sensor
: 2 integrated micro
switches.
Contact 1 : 1 NO, 1 NC.
Contact 2 : 1 NO, 1 NC.
Cut-out voltage
: 230 VAC max.
Cut-out intensity
: 4 amps max.
Connection
: electrical cable,
7 conductors.
Electrical output
: cable gland.
Length of cord
: 2 meters.
Calibration system
: by screws.
Hysteresis
: 200 daN on strand.
Operating
temperature
: -30° to +80° C.
Protection degree
: I.P 63.
Material :
aerospace
quality
aluminium.
Surface treatment
: anodizing.
Maintenance :
none.
Type
Code
Wire rope
diameter
mm
Capacity
daN
Width
mm
Length
mm
Thickness
mm
Weight
kg
HF 31/1/A2
87768
From
5 to 16
From
200 to 3200
86
150
40
0.84
5
