LIF 4x1Output signals One TTL pulse for homing track H and limit switches L
Signal level TTLU Besides the incremental graduation, the LIF 4x1 features a homing track and limit switches for limit position detection.
The signals are transmitted in TTL levels over the separate lines H and L and are therefore directly available. Yet the cable has only a very thin diameter of 4.5 mm in order to keep the forces on movable machine elements to a minimum.
H ‡ 3.8 V at –I
H = 8 mAU
L † 0.45 V at I
L = 8 mA Permissible load R ‡ 680 −
I
I
L I
† 8 mA Permissible cable length Max. 10 m
r = Reference mark position s = Beginning of measuring length (ML) LI = Limit mark, adjustable h = Switch for homing trackHo = Trigger point for homing Limit switchesHoming track
LIF 400Recommended input circuitry of the subsequent electronicsDimensioning IC
3 e.g. 74AC14R
3 = 4.7 k −
43