FD978 IMO PRECISION CONTROLS, FD978 Datasheet - Page 4

• Manufacturer Part Number: FD978
• Description: CABLE PULL SWITCH, 12M, 500V
• Manufacturer: IMO PRECISION CONTROLS

Specifications of FD978

• Contact Configuration: DPST-NC
• Contact Voltage Ac Max: 500V
• Cable Span: 12m
• Length/height, External: 131mm
• External Width: 40mm
• Operating Temperature Min: -25°C
• Operating Temperature Max: 60°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

These rope operated safety switches are installed on machines or belts. They enable a stop at any point of the machine simply by
pulling the rope by hand. Being equipped with a self-checking function, they constantly test their operation and signal by the
opening of the contacts, an accidental unfastening or break of the rope. When the models with reset button are used, they maintain
the contacts open after operation even if the rope is released.
Thimble
Part no. C870
(One thimble supplied
with each switch)
FD684
FD/FL 683/684/983/984 Rope Safety Switches (35m max) with Positive Opening
Example:
FD/FL 878 Rope Safety Switches (12m max) with Positive Opening
Example:
Example:
Applications
Accessories
Freely rotating
Health and Safety Executive recommendations are to use two switches, one at each
pulley
The examples shown on this page are the simplest form of protection, with a switch at one end of the rope and the other end fixed.
It is recommended to use only original accessories, otherwise the declared performance will not be guaranteed
0.1-0.3m
3m max.
FD 875
2-3m
Rope clamp
Part no. M870
end of the rope, for increased protection.
2-3m
Eyebolt
Part no. T870
(For tensioning or
for supports along
the length of rope)
PVC covered
steel rope
F05
Eyebolt T870
3m max.
2-3m
2-3m
Tensioner
max. 12m
max. 35m
K870
Typical installation of 24 metres in a straight line:
This gives a switch at each end of the rope,
conforming to Health and Safety Executive
guidelines, with a K870 tensioner in the centre.
4xC870 thimbles are required in total, with one
each provided with the switches, therefore only 2
additional are required.
The 8xM870 required are 2 at each switch and 2 at
each end of the K870 tensioner.
2-3m
1xFD683
1xFD684
1xK870
8xM870
2-3m
Supporting
Rope Operated Stop Switches
Eyebolt
T870
Tensioner
Part no. K870
2-3m
2xC870
12xT870
24 metres xFO5
2-3m
Clamp
M870
Rope
Reset
Red PVC covered
steel wire
rope ø5mm
Part no. FO5
sold per metre
FD 878
Thimble
C870
Tensioning
Eyebolt
T870