Function Modules S5-100U
Sensor Requirements
The following requirements must be satisfied by the sensor signals to the module inputs:
• Signal sequence for up-counting
Figure 15-13. Signal Sequence for Up-Counting
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V
a0
(R, R-N/R)
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Sensor
signals: V
a1
(A, A-N/A)
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V
a2
(B, B-N/B)
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• Pulse time of the sensors
5-V Sensors 24-V Sensors
500 ns 10 µs
2 µs 40 µs
500 ns 10 µs
t
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t
2
t
Pulses
V
a1
= Position decoder count pulses (A)
V
a2
= Position decoder count pulses (B)
V
a0
= Position decoder ref. pulse (R)
• Minimum edge steepness
5 V - differential signals according to RS 422A (A, A-N, B, B-N, R, R-N): 5 V/µs
24 V - count pulses and reference pulse (A, B, R): 0.3 V/µs
24 V - enable and reference signal: 0.3 mV/µs
EWA 4NEB 812 6120-02
15-23
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