104-IIRO-16 / 104-II-16 / 104-RO-16
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 Form C electro-mechanical relays switch up to 1A each
FUNCTIONAL DESCRIPTION
The Model 104-IIRO-16 is a low cost
32-channel PC/104 utility board featuring 16 optically isolated digital inputs with change of state (COS) detection and 16 electromechanical
Form C SPDT relay outputs. The isolated, non polarized inputs may be driven by either DC sources of 3-31V (or higher by special order) or AC sources at frequencies of 40Hz to 10KHz. Optically isolating the digital inputs from each other, and from the computer,
assures smooth, error-free data transmission
in noisy, real-world environments. The input channels are available via a 34-pin
IDC type header. The 16 electromechanical relays are de-energized at system power-up to prevent an unintended control output
signal. Data to the relays are latched. The relay contacts are available via a 50-pin IDC type header.
Each input circuit includes a jumper selectable slow/fast filter to accommodate AC inputs and is also useful for slow DC inputs in noisy environments. The filter may be manually
disabled to increase the board’s typical response time to 10µs when used with
faster DC inputs. All input signals are rectified by diodes before input to the opto-isolators. Current limiting is provided by a 1.8K Ohm, 1/2-Watt resistor in series and accommodates
a wide input range.
The board is installed by jumper selecting the base address and IRQ. System interrupts are software controlled, enabling the board to generate an interrupt whenever one or more of the isolated digital inputs changes state. This eliminates the need for constant polling and greatly frees up system resources. Model 104-IIRO-16E is an economy version available without the interrupt Change of State Detection feature. Model 104-II-16 features 16 isolated digital inputs only and the 104-RO-16 features 16 relay outputs only.
Ordering Information
| Item Codes |
Part# |
Description |
Unit |
| 104-IIRO-16 |
|
32-channel opto-isolated input/relay output with chage of state detection |
|
| 104-IIRO-16E |
|
Economy version without change of state feature |
|
| 104-II-16 |
|
Input only version |
|
| 104-RO-16 |
|
Relay only version |
|
Data subject to change without notice
