XtraDrive User Manual Chapter 5: Parameter Settings and Functions
5-79
5.7.1. Interface Circuit
The following diagram shows the standard connections for an absolute
encoder mounted to a servomotor.
Applicable line receivers: SN75175 or MC3486 by TI.
Terminating resistance R: 220 to 470Ω
SEN Signals
• Wait at least three seconds after turning ON the power before
raising the SEN signal to high level.
• When the SEN signal is changed from low level to high level, the
multi-turn data and initial incremental pulses are transmitted.
• The motor cannot be operated until these operations are completed,
regardless of the status of the servo ON signal (/S-ON).
Note: If for some reason it is necessary to turn OFF a SEN signal that is already ON, and then to turn it back
ON again, maintain the high level for at least 1.3 seconds before turning it ON and OFF.
OFF
ON = high level
OFF
ON
1.3 s min.
15 ms
min.
SEN signal
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