
Chapter 4 Electrical Installation
Shenzhen Hpmont Technology Co., Ltd.
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HD5L Series Controller User Manual V1.4
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
AI4+, AI4-
Analogue
differential input
Selectable input voltage/current
Input voltage: -10V - 10V (input impedance: 34kΩ)
Input current: 0 - 20mA (input impedance: 500Ω)
GND
Analogue ground
GND is isolated to COM
DI7 - DI12
Digital input
Programmable bipolar optional input signal
Input voltage: 0 - 30VDC (input impedance: 4.7kΩ)
P24, COM
Digital power supply
Digital input use +24V as supply, maximum output current is 200mA
SEL
Digital input
common terminal
SEL and P24 are connected by default (factory setting).
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Disconnected SEL and P24 when use external power to drive DI7 - DI12
R2A/R2B/R2C
R3A/R3B/R3C
R4A/R4B/R4C
Relay output
Programmable output, contact rating: 250VAC/3A or 30VDC/1A
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RB,RC: normally closed; RA,RC: normally open
Note:
Limit the current within 3A if the relay terminal is to connect to AC 220V voltage signal.
4.4.3
Modbus Communication Terminal
Pin
Difinition
1,3 +5V
2 485+
4,5,6 GND
7 485-
8 Unused
AI4+
COM
DI7 DI8 DI9 DI10 DI11 DI12
R2A R3A
R4A
R3B
GND
P24 SEL
COM COM
R2C
R4C
AI4-
R2B
R3C R4B
I/O Broad
Terminal
Terminal
RJ45
Control Board
RJ45
1
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