Shenzhen Hpmont Technology Co., Ltd. Chapter 4 Electrical Installation
HD3N Series User Manual V1.1 - 23 -
4.4.1 Control Terminal (7.5 - 75kW)
Figure 4-1 Control board terminal (7.5 - 75kW)
Table 4-6 Control board terminal description (7.5 - 75kW)
Terminal Description
A, B
Communication
terminal
A: 485+; B: 485-
+10V, GND
Analogue power
supply
Analogue input use +10V power supply, max. output current is 100mA
• Change to +5V by setting jumper on CN15
GND is isolated to COM
AI1, AI2 Anglogue input
AI1, AI2 input voltage: 0 - 10V (input impedance: 22kΩ)
AI2 input current: 0 - 20mA (input impedance: 500Ω)
AI2 can select voltage/current; AI2 = current: input impedance is selectable;
AO1, AO2 Anglogue output
Output voltage/current signal: 0 - 10V/0 - 20mA
Programmable output
GND Anglogue ground
DI1 - DI6 Digital input
Programmable bipolar optional input signal, compatible with DC/AC input
signal.
Input voltage: 15VDC - 56VDC, compatible with 24VDC/36VDC/48VDC
Input voltage: 12VAC - 54VAC, compatible with 36VAC/48VAC
Input impedance 6.2kΩ
• DI6 can be selectable for high-frequency input, max-frequency 10kHz
P24, COM
Digital power
supply
Digital input use +24V power supply, max. output current is 200mA
COM is isolated to CME
SEL
Digital input
common terminal
SEL and P24 are connected by default
• Disconnect SEL and P24 when use external power to drive DI
DO1, CME Digital output
Programmable optical-couple isolation, open collector output
• DO1, DO2: open collector output; Output voltage 0 - 30VDC, max-output
current 50mA
• DO2 can be selectable for pulse frequency output, max. frequency 10kHz
CME is isolated to COM, connected to COM by default
Disconnect CME and COM when they are isolating output
DO2, COM Digital output
R1A/R1B/R1C Relay output
Programmable output, contact rating: 250VAC/3A or 30VDC/1A
• R1B, R1C: normally closed; R1A, R1C: normally open
Control Board
+10V
A
B
AI1 AI2 DI1 DI2 DI3 DI4 DI5 DI6 COM R1ACOM
GND
AO1 AO2
P24 SEL DO1 R1CGND COM CME DO2 R1B
Terminal
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