Inovance MD290 Series - Page 241

8. Peripherals and Options
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8
8.4.1 Functional Extension Cards
Ƶ
Extension I/O Card (MD38IO1)
MD38IO1 is developed by Inovance and is designed for extension of input and output
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a relay output terminal, a digital output (DO) terminal and an analog output (AO) terminal.
It also has the RS485 communication interface and CAN communication interface.
CN1
J9
ON
1
2
3
45
6
7
8
S
1
ON
1
2
3$3%3&
S2
J3
J
8
J7
CN3
CN4
J4
AI3
AO2 DI6
DI7 DI8 DI9 DI10
485+ 485-
PGND
GND
DO2
CME
+24V OP1 COM CANH CANL
Table 8-1 Terminal descriptions of MD38IO1
Type Terminal Terminal Name Function Description
Power supply +24V-COM External +24V
power supply
Provide +24 V power supply to an external
unit.
Generally used to supply DI/DO terminals
and external sensors.
Max. output current: 170 mA
OP1 Digital input
power terminal
Connect to +24V by the jumper J8 by
default.
When applying an external power supply,
remove the jumper J8 to disconnect the
OP1 from +24V and connect the OP1 to the
external power supply.
Analog input AI3-PGND Analog input 3 Optically-coupled isolation input, supporting
differential voltage input and temperature
detection resistance input
Input voltage range: -10 to 10 VDC
Connect the PT100 or PT1000 temperature
sensor
Input mode determined by DIP switch
S1, multiple functions not supported
simultaneously