Fagor CNC 8070 - 7.7.4 Feedback inputs.

Hardware configuration.
CNC 8070
CENTRAL UNIT FOR CABINET (Q7-A PLATFORM).
7.
Technical/electrical characteristics of the inputs and outputs.
·157·
(REF: 1911)
7.7.4 Feedback inputs.
The central unit has one feedback input. The feedback signals may be incremental (TTL,
differential TTL, Vpp).
Work levels for TTL signal.
Work levels for differential TTL signal.
Characteristic. Value.
+5 V power consumption. 250 mA.
Characteristic. Value.
Maximum frequency: 100 kHz.
Phase difference: 90º ± 20º.
High threshold (logic level "1") VIH: 2,2 V < VIH < 5 V.
Low threshold (logic level "0") VIL: -1 V < VIL < 0,6 V.
Maximum voltage: -1 V ÷ 7 V
Hysteresis: 1.2 V.
Characteristic. Value.
Maximum frequency: 1000 kHz.
Phase difference: 90º ± 20º.
Maximum voltage in common mode: -1 V ÷ 7 V
Maximum voltage in differential mode: ± 6 V.
Hysteresis: 0.2 V.
Maximum differential input current: 50 mA.
A
B
Io
A
B
Io
A
B
Io