2 Mechanical Installation and Wiring
- 18 -
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MD200XXX-NC Main Control Board Terminals
ON
1
2
DIP switch
Default value:1: ON, 2: ON
ON
1 2
ON
1 2
ON
1 2
ON
1 2
DIO used
as DI
DIO used
as DO
Valid when the DI is
connected to 0 V
Valid when the DI is
connected to 24 V
DI1 DI2 DI3 DI4 DIO COM AI AO 10V GND TCTBTA
Terminal Mark Terminal Name Function
DI1-DI4 Digital input Multi-functional input terminal
When active low is selected, the valid level is
lower than 5 V, DI to DI3 are low-speed DIs, the
frequency is lower than 100 Hz, DI4 is high-speed
pulse input, the highest frequency DI4 can support
is 20 kHz.
DIO Digital input/output
Multi-functional digital input/output
terminal
Use DIP switch to select DI/DO function, for
details, see gure 2-2, DO common terminal is
COM.
COM 24 V grounded power supply 24 V grounded power supply Internal isolation from COM
+10 V
Analog input/output
10 V voltage output reference 10V ± 10%, up to10 mA
GND Analog ground Internal isolation from COM
AI
Analog input signal channel 1 (single
ended)
(0 to 10 V) / (0 to 20 mA) input, 12 bit resolution,
with calibrated accuracy of 0.5%, the response
time is less than 8ms
AO Analog output 1
AO: 0 to 10 V, with calibrated accuracy of 100 mV,
10-bit resolution, with the calibrated accuracy of
1%
T/A-T/C, T/
A-T/B
Relay output Relay output
TA-TC: Normally open; TA-TB: Normally close
Load: 3 A/250 VAC 3 A/30 VDC
Note: TA-TB is only used on MD200xxx-NC model
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