1/11 IO-AI8
I / O E x p a n s i o n M o d u l e
Unitronics
7
IO-AI8 Technical Specifications
Max. current consumption
40mA maximum from the adapter’s 5VDC
Typical power consumption
0.2W@5VDC
Status indicator
(RUN) Green
LED:
—Lit when a communication link is established between module and OPLC.
—Blinks when the communication link fails.
Analog Inputs
Number of inputs
8 (single-ended) See Note 1.
Input range
0-10V, 0-20mA, 4-20mA. See Note 1.
Input type
Either Normal or Fast mode, according to the filter type selected in software
settings
Conversion method
Voltage to frequency
Normal mode
Resolution at 0-10V,
0-20mA
14-bit (16384 units)
Resolution at 4-20mA
3277 to16383 (13107 units)
Conversion time
100mSec minimum per input
Fast mode
Resolution at 0-10V,
0-20mA
12-bit (4096 units)
Resolution at 4-20mA
819 to 4095 (3277 units)
Conversion time
25mSec minimum per input
Input impedance
>400K
Ω
—voltage
500
Ω
—current
Isolation None
Absolute maximum rating
±15V—voltage
±30mA—current
Linearity error
0.04% max of full scale
Error limits
0.4% of input value
Status indicators
(OUT OF RANGE)
Red LEDs—Lit when the corresponding input is receiving current or voltage
in excess of the input range. See Note 5.
Environmental
IP20/NEMA1
Operating temperature
0
°
to 50
°
C (32 to 122° F)
Storage temperature
-20
°
to 60
°
C (-4 to 140° F)
Relative Humidity (RH)
5% to 95% (non-condensing)
Dimensions (WxHxD)
80mm x 93mm x 60mm (3.15 x 3.66 x 2.362”)
Weight
150g (5.3 oz)
Mounting
Either onto a 35mm DIN-rail or screw- mounted.
Notes:
1.
Each input may be set as either voltage (0-10V), or current (0-20mA, 4-20mA) via wiring,
jumper and software settings.
2.
The voltage or current value of analog inputs can also indicate faults, as shown in the table below.
Value: 12-bit
(Fast mode)
Value: 14-bit
(Normal mode)
Input Value
Deviates:
-1 -1
Slightly
below
the input range.
4096 16384 Slightly
above
the input range.
32767 32767
Greatly
above or below
the input
range.
