USER'S MANUAL, VERSION 2.0
Copyright © Convergence Systems Limited 2021, All Rights Reserved
115
Example 3: (GPI using the
Internal Isolated
+12V, 2 Watt Power Supply)
Each GPI pin pair “looks” into an optical isolator with an operational forward voltage of
1.2 Volt, maximum 50 mA current. An internal series 1K Ohm 1.5 Watt resistor is also
present for protection.
1K
I=12 mA@ Push button on
Inside CS463
GPI_1 Logic becomes Low
when the sensor or Push
button switch is turned on
(pushed)
When external push
button is off, then the
optical isolator is turned
on inside with a forward
voltage of 1.2 Volt
GPI_1
(+)
(Pin-2)
+12V (Pin-5)
GPI_1
(-)
Pin-12)
GND (Pin-15)
I=5.4 mA@ Push button off
Sensor or Push
button switch