WCS* Read Head Position Encoding System
Options and Special Functions
2020-01
69
9.4 Option-S—Velocity Output, Type LS...S
The WCS3B read head with velocity output features an additional 24 VDC output, which trans-
mits a signal in the event that a limit speed is exceeded. The limit speed can be configured on
the 4-way DIP switch in the read head. The limit speed is set to 0.7 m/s on delivery.
Setting the limit speed (option -S only)
The limit speed is output digitally via pin 5 of the 5-pin M12 connector:
U
v
(pin 5) = operating voltage U
B
--> v
current
< v
limit
U
v
(pin 5) = floating (high impedance) --> v
current
v
limit
Limit speed v
limit
S1
1 2 3 4
0.7 m/s X X OFF OFF
2.0 m/s X X OFF ON
3.0 m/s X X ON OFF
4.0 m/s X X ON ON
Note
LED status indicator on the WCS3B read head with velocity output
The WCS3B read head has three LEDs on the front. The meaning of the yellow LED is
changed according to the speed setting.
Illuminated yellow: Limit speed not exceeded
Not illuminated yellow: Limit speed exceeded
Flashing red: Read head outside the code rail or read head dirty
Note
The set limit speed is not noted on the nameplate of the read head.