Interface; Sink I/O Interface - Mitsubishi Electric -MR-CV User Manual

5.7

Interface

Sink I/O interface

Digital input interface DI
This is an input circuit in which the photocoupler cathode side is the input terminal. Transmit signals from a sink (open-
collector) type transistor output, relay switch, etc. The following connection diagram is for sink input. Refer to the following for
source input.
Page 62 Source I/O interface
For transistor
Approx. 5 mA
TR Switch
24 V DC
350 mA
V ≤ 1.0 V
CES
I ≤ 100 μA
CEO
Digital output interface DO
This is a circuit in which the collector of the output transistor is the output terminal. When the output transistor is turned on, the
current flows to the collector terminal.
A lamp, relay, or photocoupler can be driven. Install a diode (D) for an inductive load, or install an inrush current suppressing
resistor (R) for a lamp load.
(Rated current: 40 mA or less, maximum current: 50 mA or less, inrush current: 100 mA or less) A maximum of 2.6 V voltage
drop occurs in the converter unit.
The following connection diagram is for the sink output. Refer to the following for the source output.
Page 62 Source I/O interface
MR-CV_
ALM
etc.
DOCOM
*1 If the voltage drop (a maximum of 2.6 V) interferes with the relay operation, apply high voltage (a maximum of 26.4 V) from an external
source.
MR-CV_
EM1
etc.
Approx. 4.1 kΩ
DICOM
± 10 %
If the polarity of the
diode is reversed, the
converter unit will
malfunction.
Load
*1
24 V DC ± 10 %
350 mA
5 SIGNALS AND WIRING
5.7 Interface
5
61