Specifications

IP 240 Encoder Signals
The IN signal is evaluated by the IP 240 module firmware. For this reason, acquisition of the signal
edges may sometimes be deferred by one firmware cycle.
The times and edge steepness given below refer to the signals present on the module.
Connection of the preliminary contact signal to the IN input
Fig. 13-4. Timing Diagram for Reference Point Approach, Position Decoding Mode
1) 1) 2)1)
IN signal
Z signal
Counting
pulses
t
2
t
1
Direction of travel
1) Actual value acquisition is synchronized.
2) Actual value acquisition is not synchronized.
No Z signal permitted
t
1
: min. 5 ms t
2
: min. 5 ms
Fig. 13-5. Timing Diagram for Reference Point Approach, Positioning Mode
2) 1)
t
1
t
2
IN signal
Z signal
Counting
pulses
Direction of travel
1) Actual value acquisition is synchronized.
2) Actual value acquisition is not synchronized.
No Z signal permitted
t
1
: min. 6.5 ms t
2
: min. 6.5 ms
Note
It must be ensured that synchronization always takes place at the same zero mark
position by selecting the traversing speed during reference point approach and
aligning the preliminary contact signal edges between the zero marks.
EWA 4NEB 811 6120-02a 13-5