Shenzhen Hpmont Technology Co., Ltd.
Chapter 4 Electrical Installation
HD31 Series User Manual V1.1
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21
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4.4.2
I/O Board Terminal
Figure 4–4 I/O board terminal
Table 4-6 I/O board terminal description
Terminal
Function Description
AI3 / AI4
Analogue input
Input voltage: -10 - +10V (input impedance: 32kΩ)
Input current: 0 - 20mA (input impedance: 500Ω)
+10 / GND
Analogue power
supply
Analogue input use +10V as supply, max. output current is 100mA
DI7 - DI9
Digital input
Programmable bipolar optional input, low level is effective by default.
Input voltage: 0 - 30VDC (input impedance: 4.7kΩ)
P24, COM
Digital power supply
Digital input use +24V as supply, max. output current is 200mA
SEL
Digital input
common terminal
SEL and P24 are connected by default
•
Disconnected SEL and P24 when use external power to drive DI7 - DI9
R2A/R2C -
R10A/R10C
Relay output
Programmable normally open output
Contact rating: 250VAC / 3A or 30VDC / 1A
Note:
Limit the current within 3A if the relay terminal is to connect to AC 220V voltage signal.
4.4.3
Modbus Communication Terminal
Do not use communication terminal and RJ45
simultaneously.
Terminal
Description
A 485+
B 485-
Pin
Difinition
1,3 +5V
2 485+
4,5,6 GND
7 485-
8 Unused
I/O Board
R10A
R9A
R2A R3A R4A R5A R6A
R2A R3A R4A R5A R6A
R7A R8A
R2A R3A R4A R5A R6A
R10C
R9C
R2C R3C R4C R5C R6C R7C R8C
Terminal
Terminal
RJ45
Control Board
Terminal
A
B
RJ45
1
8
4