Product Description:
The 104-IIRO-16 is a low-cost board that provides isolated input and
output for PC/104 Bus computer applications. The board has sixteen
optically-isolated digital inputs for AC or DC control signals and
sixteen electro-mechanical relay outputs. The Change of State Detection
capability of ACCES' Model 104-IIRO-16 sets this board apart from the
competition. An Economy version can be ordered as Model 104-IIRO-16E
which has no Change of State Detection or IRQs. Also available is Model
104-II-16 which has 16 isolated digital inputs only and Model 104-RO-16
which has 16 relay outputs only.
FEATURES
- 16 optically-isolated, non-polarized CMOS compatible digital
inputs accept ±31VDC or AC rms
- IRQ on input change of state (COS) eliminates the need for
constant polling
- Slow/fast filter to accommodate AC voltages and noisy DC inputs
- 16 long-life form C electro-mechanical relays switch up to 1A
each
- Factory Options: (call for pricing and availability)
- Economy version without COS feature
- Input only and relay only versions
- Expanded input voltage levels
INPUTS
The isolated inputs can be driven by either AC or DC and are not
polarity sensitive. Input
signals are rectified by opto-coupler diodes. A 1.8KΩ, ½ Watt
resistor in series provides current limiting. The input voltage range
is 3V to 28V (rms). To
extend the input voltage range, you may connect external resistors in
series with the input.
Each input circuit is switch selectable for slow/fast filter that
has a 4.7 millisecond time
constant. The filter must
be selected for AC inputs in order to eliminate response to AC noise.
The filter is also valuable for use with slow DC input signals in a
noisy
environment. The filter may be switched out for DC inputs in order to
obtain faster
response. Filters are manually switched individually on or off.
INTERRUPTS
Interrupts are enabled/disabled
by software. When the change-of-state detection circuit
is enabled, the card asserts an interrupt whenever any of the sixteen
isolated inputs change
state. Once an interrupt has been generated and serviced, it is
automatically cleared. This feature greatly frees up system resources
by eliminating the need for
constant polling to see when an input has changed state.
OUTPUTS
The electro-mechanical relay outputs are comprised of two groups of
eight form C SPDT
outputs.
CONNECTIONS
The relay outputs are accessed via a 50 pin header type connector,
while the isolated inputs are accessed via a 34 pin type header
connector.
UTILILTY SOFTWARE
104-IIRO-16 utility software
provided on CD includes sample programs in a variety of languages for
DOS / Windows 95/98/NT4/2000/XP and 2003. A Windows graphical setup
program is also provided, and a "C" language sample for Linux.
Isolated Digital Inputs
- Number of Inputs: Sixteen
- Type: Non-polarized, optically-isolated from each other and from
the computer. (CMOS compatible).
- Voltage Range: 3 to 31V DC or AC RMS (50 to 10 KHz)
- Isolation: 500V
- Input Resistance: 1.8KΩ in series with opto-coupler.
- Response Time: 4.7 milliseconds w/filter, 10usec w/o filter
Relay Outputs
- Number of Outputs: Sixteen
- Type: SPDT Form C Relay - OMRON G5V-1
- Contact Ratings: 1A @ 24VDC (60VDC max), 0.5A @ 125VAC carry
current
- Contact Type: Ag with Au clad (bifurcated contacts optional)
- Contact Arrangements: Channels 0-15: SPDT Form C.
- Contact Resistance: Initial, 100 mΩ maximum.
- Contact Life: Mechanical: 5 million operations minimum.
- Operating Time: 5 milliseconds maximum.
- Release Time: 5 millisecond maximum.
- Regulatory Approvals: UL and CSA.
Interrupts
- When enabled by software, interrupts are generated when any
digital
input changes state (High to Low or Low to High, and from signal to
no signal with AC inputs).
Power Required
- +5VDC at 0.5A (all relays ON).
Environmental
- Ambient Temperature: Operating: -30°C to 70°C.
(non-icing)
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