Inovance MD500 Series - Terminal Function

3. Electrical Installation
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Terminal Function
Type Terminal
Name
Description
Power
supply
+10V GND +10 V power
supply
Provides +10 V power supply to an
external unit.
Generally used to supply an external
potentiometer of 1 to 5 kΩ
Max. output current: 10 mA
+24V COM +24 V power
supply
Provides +24 V power supply to an
external unit.
Generally used to supply the DI/DO
terminals and external sensors
Max. output current: 170 mA
OP Input terminal for
external power
supply
Connected to +24 V by default.
When DI1 to DI5 need to be driven by
external signals, OP must be disconnected
from + 24 V and connected to an external
power supply.
Analog
inputs
AI1 GND Analog input 1 Voltage range of inputs: 0 to 10 VDC
Input impedance: 22 kΩ
AI2 GND Analog input 2 Either a voltage or a current input,
determined by jumper J9
Input voltage range: 0 to 10 VDC
Input current range: 0 to 20 mA
Input impedance: 22 kΩ (voltage input),
500 Ω or 250 Ω (current input) decided by
J10
<1>
Digital
inputs
DI1 OP Digital input 1 Optically-coupled isolation compatible with
dual-polarity inputs
Input impedance: 1.39 kΩ
Voltage range for inputs: 9 to 30 V
DI2 OP Digital input 2
DI3 OP Digital input 3
DI4 OP Digital input 4
DI5 OP High-speed pulse
input
In addition to having the same features as
DI1 to DI4, DI5 can also be used for high-
speed pulse inputs.
Max. input frequency: 100 kHz
Input impedance: 1.03 kΩ
Analog
output
AO1 GND Analog output 1 Either a voltage or a current output,
determined by jumper J7.
Output voltage range: 0 to 10 V
Output current range: 0 to 20 mA.