Veichi Electric VC-4AD User Manual page 2

1.3 Definition of terminals
No Marking Instructions
01 24V Analogue power supply 24V positive
03 V1+ Voltage signal input for channel 1
05 I1+ Channel 1 current signal input
07 V2+ Channel 2 voltage signal input
09 I2+ 2nd channel current signal input
11 V3+ Voltage signal input for channel 3
13 I3+ Channel 3 current signal input
15 V4+ Channel 4 voltage signal input
17 I4+ Channel 4 current signal input
Note: For each channel, voltage and current signals cannot be input at the same time. When measuring current signals, please
short the channel voltage signal input to the current signal input.
1.4 Access systems
The expansion interface allows the VC-4AD to be connected to a main module of the VC series PLC or to other expansion
modules. The expansion interface can also be used to connect other expansion modules of the same or different models of the VC
series. This is shown in Figure 1-4.
P u s h r i g h t
Figure 1-4 Schematic diagram of the connection to the main module and other expansion modules
No Marking
02 COM
04 PG
06 VI1–

08
10 VI2-

12
14 VI3–

16
18 VI4–
1-3 Terminal definition table
P u s h l e f t
V C 1 - 1 6 1 4 M A R
2
Instructions
Analogue power supply 24V negative
Grounded terminal
Channel 1 common ground end
Reserved
Channel 2 common ground end
Reserved
Channel 3 common ground end
Reserved
Channel 4 common ground end