IDEC MICRO3 User Manual

4: S
PECIAL
F
UNCTIONS
U
SER
’
S
M
ANUAL
4-27
Analog Output Function
The D/A converter unit is used with the transistor output type MICRO
3
base unit to perform an 8-bit D/A conversion. The
PWM (pulse width modulation) instruction is used to convert the digital value to a pulse output signal. The output from
MICRO
3
output Q0 is entered to the D/A converter unit to generate an analog current or voltage output to control an
inverter. Only one D/A converter unit can be connected to the MICRO
3
base unit.
D/A Converter Unit
Depending on the output signals, five D/A converter units are available:
Parts Description
Internal Circuit
Type No. Output Signal Range Remarks
FC2A-DA1 0 to 5V DC
FC2A-DA2 0 to 10V DC
FC2A-DA3 –5 to +5V DC
FC2A-DA4 4 to 20mA DC Load resistance 300 Ω maximum
FC2A-DA5 –10 to +10V DC
Power Supply Terminals
Connect power supply 24V DC.
FG Terminal
Connect to the ground. (Grounding resistance 100Ω maximum)
Power Indicator
Turns on when power is supplied.
Input Selector Switch
Select the sink or source input depending on the MICRO
3
output.
Set to SINK when connecting the input to the source MICRO
3
output.
Set to SCE when connecting the input to the sink MICRO
3
output.
Input Terminal
Connect to the output 0 terminal on the MICRO
3
.
Analog Output Terminals
Send out analog current or voltage output signal.
+–
24V DC
D/A UNIT
OUTPUT
4-20mA
POWER
SCE
SINK
+–
ANALOG WIRE TO
OUT 0
OUTPUT INPUT
+24V DC
INPUT
–24V DC (GND)
FG
DC/DC Converter
Input Circuit
Sink or Source
Isolation
Circuit
Operation
Circuit
Voltage or
Current
ANALOG OUTPUT +
ANALOG OUTPUT –
Output Circuit

IDEC MICRO3 Specifications

General

Brand	IDEC
Model	MICRO3
Category	Controller
Language	English