IO-DI8-RO4, IO-DI8-RO4-L
I / O E x p a n s i o n M o d u l e s
7/03
6
Unitronics Industrial Automation
Increasing Contact Life Span
Both modules have 4 relay outputs. To increase the
life span of these contacts and protect the module
from potential damage by reverse
EMF, connect:
a clamping diode in parallel with each
inductive DC load,
an RC snubber circuit in parallel with each
inductive
AC
load.
0V
L1, L2, L3
(115/230VAC)
+V
(12/24VDC)
N
R
C
IO-DI8-RO4, IO-DI8-RO4-L Technical Specifications
Max. current consumption
60mA maximum from the adapter’s 5VDC
Typical power consumption
0.15W @ 5VDC
Status indicator
(RUN)
Green LED:
—Lit when a communication link is established between module and OPLC.
—Blinks when the communication link fails.
Inputs
Number of inputs
8 (in one group)
Input type
pnp (source) or npn (sink)
Galvanic isolation
None
Status indicators
(IN)
Green LEDs—Lit when the corresponding input is active. See Note 1.
Nominal input voltage
24VDC for IO-DI8-RO4, 12VDC for IO-DI8-RO4-L
Input voltage
IO-DI8-RO4
IO-DI8-RO4-L
pnp (source)
0-5VDC for Logic ‘0’
17-28.8VDC for Logic ‘1’
0-3VDC for Logic ‘0’
8-15.6V for Logic ‘1’
npn (sink), voltage/current
17-28.8VDC/<1.1 mA for Logic ‘0’
0-5VDC/>4.3mA for Logic ‘1’
8-15.6VDC/<1.1 mA for Logic ‘0’
0-3VDC/>4.3mA for Logic ‘1’
Input current
6mA@24VDC
6mA@12VDC
Response time
10mSec typical
Input #7
The specifications below apply when this input is wired for use as a high-speed
counter input/frequency measurer. See Notes 2 and 3.
Resolution
16-bit
Frequency
5kHz
maximum
Minimum pulse width
80µs
