NEXCOM VTC 7100-D1K - Manual (Page 88)

Copyright © 2012 NEXCOM International Co., Ltd. All Rights Reserved. 74
Appendix C: Signal Connection of GPO, GPI, Analog Voltage Input and Analog Current Input
VTC 71-D Series User Manual
Wet Contact:
The SW1 to need switch to “ON” state. The GPO signal will have a pull up
resistor to 5V internally when you switch “SW1” to “ON” state. The output
signal will has two state, one is low level (driven to 0V from GPO signal )
other is high level (driven to 5V from GPO signal).
The figure below shows how to connect an external input source to one of
isolated output channel.
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO7
GPO8
1
2
3
4
5
6
7
8
9
10
ISO1_GND
Terminal-10-90-3.81mm
CN3
External Internal
5
6
7
8
4
3
2
1
M17
ISO1_GND
G_OUT1
G_OUT2
External Device
0805
0805
300E
300E
ISO1_VCC5
Analog Input
CN1 connector for analog input signal
The CN1 has two single end input of analog voltage and one differential
input of analog current. Analog voltage can accept 0~12Vdc voltage input.
And analog current can accept 0~10A current input
Terminal-5-90-3.81mm
CN1
A_GND
A-VIN1
A-VIN2
A-I-OUT
A-I-IN
1
2
3
4
5
External Internal
GND
Analog voltage1
Analog voltage2
External
Device
2. Differential signal of analog current contacts from external device.
Terminal-5-90-3.81mm
CN1
A_GND
A-VIN1
A-VIN2
A-I-OUT
A-I-IN
1
2
3
4
5
External Internal
Current
source
External
Device
Current flow
1. Single end of analog voltage contacts from external device.