User Manual

9.1 Outline
KV-10/80 Series Only
KV-300
KV-10/80
Chapter 9 KV-AD4/DA4 Analog I/O Unit
1-334
9
9.1 Outline
Features
The KV-AD4 is provided with an A/D conversion function, while the KV-DA4 is
provided with a D/A conversion function.
A/D Conversion — KV-AD4
Analog data that is input from external instruments is converted to digital data, and
written to CPU data memory. Conversion of analog data to digital data allows the
analog data to be processed on the CPU.
➮ For details, see "Part Names and Functions" on the next page.
D/A Conversion — KV-DA4
The digital data that is written to CPU data memory is converted to analog signals,
and output to external instruments. Conversion of digital data after it has been
processed by the CPU to analog data allows information to be sent to instruments
such as temperature recorders or analog controllers that handle analog data.
➮ For details, see "Part Names and Functions" on the next page.
DIPSW1 DIPSW2
ON
Status
OFF
CH0, CH1 -10 to +10 V CH0, CH1 4 to 20 mA
CH2, CH3 -10 to +10 V CH2, CH3 4 to 20 mA
• Analog signals can be output to up to four (4 channels) external instruments.
• Two output ranges are provided for each channel, and can be selected on the
terminal block.
◆ Voltage: -10 to +10 V ◆ Current: 4 to 20 mA
Power
supply
unit
D/A
converter
CPU KV-DA4
Data
Memory
Writing digital data
Servo motor controller
Inverter
Temperature recorder
Analog controller
Analog
signals
output
Power
supply
unit
A/D
converter
KV-AD4
CPU
Transducer
Pre-amp
Data
Memory
Writing digital data
Voltage
Current
Power
Power factor
Temperature
Pressure
Flow rate
Speed
Analog
signals
input
• Analog signals can be input from up to four (4 channels) external instruments.
• The input ranges of each channel can be selected by DIP switches as shown in
the following table.
KVHKA Chap 09.p65 08.3.11, 11:20 AM334