GRL Designs
Manufacturers of Crane Overload Sensors

 Type

L1 

H1 

H2 

W1 

LSW05-50


 SRW05-30 

145 

100 

78

60 

LSW80

 

230 

110 

85 

60 

 LSW100

 

280 

115 

85 

60 

LIMITLOAD_ASSEMBLY_TYPE_LS10-3.jpg

LSW & SRW SERIES LIMITLOAD

The LSW &SRW units can be wired in different configurations. Wired in series then either switch will provide the cut out. The units however could be wired into 2 independent circuits providing even higher security switching. 


For LSW units normal series operation the Blue and White cables should be connected together and the load connected across Black and Yellow


For SRW units normal series operation the Blue and Green cables should be connected together and the load connected across Black and Red


These units comply with the requirements of BS EN12077-2 & BS EN13849-2

Electrical Connections                               


Black......Com 1        Blue......Com 2         

Green.....N/O 1         Red.......N/O 2         

White......N/C 1         Yellow...N/C 2


Contact Rating


6 Amps 125 - 400 Volts AC

0.5 Amps 250 Volts DC

load Type  Operation  Range (kN)  Range (kg)  Max Rope (mm)
 LSW05 Overload  1-6  102-612  14 
 LSW10 Overload  5-12.5  510-1,275  14 
 LSW20 Overload  10-22.5  1,019-2,294  16 
 LSW30 Overload  20-32.5  2,038-3,313  20 
 LSW50 Overload  30-50  3,058-5,097  24 
 LSW80 Overload  45-80  4,587-8,155  24 
 LSW100 Overload  80-100  8,155-10,190  24 
 SRW05 Slack Rope  0.25-2.5  25-255  14 
 SRW10 Slack Rope  1-5  102-510  14
 SRW20 Slack Rope  2.5-7.5  255-764  16