Version 08.2017 | Page/ Seite 31
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LIMIT SWITCHES
WARNING. These limit switches are not intended as safety devices or as part of a system
intended to ensure personal safety. When two switches are mounted in close proximity (as
in the case of a left and right limit switch), a minimum of 30mm spacing between sense areas
must be maintained.
If required, the ServoTube Module can be supplied with limit switches.
There are two types available, NPN output and PNP output. Each output type is available with 5 metres of cable
suitable for continuous flexing.
Each limit switch position is adjustable and switching is achieved by an actuator vane mounted on the forcer.
Electrical connections are made via wire ends stripped and solder tinned ready for termination.
SPECIFICATION
VALUE
minimum
typical
maximum
units
Supply voltage
10
24
30
Vd.c.
Supply current
-
15
-
mA
Sink current
-
-
100
mA
“closed” voltage
-
-
1
V d.c.
Frequency response
-
-
600
Hz
The output for all types can be normally closed (NC) or normally open (NO) open collector transistor. The NC
outputs switch open when a limit is detected and current stops flowing in the LOAD. The NO outputs switch closed
when a limit is detected and current starts flowing in the LOAD.
A red indicator shows the output status.
LOAD
Brown (+V)
Black (LOAD)
Blue (0V)
LOAD
Brown (+V)
Black (LOAD)
Blue (0V)
PNP
NPN
