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> Opal-MM
Opal-MM
8 Channel Optoisolated Input & 8 Relay Output PC/104 Module
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Description |
Opal-MM is a PC/104 format digital I/O module designed for industrial applications requiring isolation between the computer and the external signals it is monitoring and controlling. This module features 8 optoisolated digital inputs and 8 relay outputs. Each input can accept both AC and DC voltages as low as 3V and as high as 24V.
An on-board input filter circuit allows the sensing of AC inputs from 40Hz to 100KHz. The presence of an appropriate AC input signal will generate a DC signal at the output that can be read by the computer. This filter circuit is selectable on a channel by channel basis.
The 8 relay outputs are SPDT format (form C). Each relay has 3 contacts: Common, Normally Open, and Normally Closed. For safety and reliability, all relays are at their power-off state at power-up or system reset. Each relay can switch both AC and DC voltages.
All I/O is isolated from the PC up to 500V AC or DC. The relays have long lifetime (10,000,000 operations) and quick actuation time (5ms max operate and release). A single 40-pin I/O header is used for all I/O.
Please note: Individual input and output channels are not isolated from each other at this voltage. The isolation specification applies only between the I/O points as a group and the remainder of the circuitry.
AC Input Operation
Opal-MM can monitor AC inputs as well as DC inputs. A low-pass filter is provided for each input line that can be switched on independently for each channel for AC operation. With this filter switched on, a sine wave or square wave signal with 40Hz or higher frequency and 3V to 24V peak-to-peak amplitude will appear as a steady-state DC signal to the board and can be read reliably by the user's program.
Opal-MM provides isolation on its input and output lines. The board will withstand up to 500V DC or AC difference in potential between the I/O lines and the rest of the board's circuitry. Note: This isolation specification does not apply between individual input or output channels; it applies only between the I/O lines and the board. In many applications, channel-to-channel isolation is not required; frequently the inputs or outputs all share a common line, requiring only isolation between the I/O lines as a group and the control circuitry. Please verify the configuration and isolation requirements of your application before selecting any isolated I/O board. Each input and output channel on Opal-MM is completely independent and does not share any signal trace with any other channel. Therefore, every channel is isolated from every other channel. However, the trace spacing at the I/O connector does not satisfy requirements for the 500V rating. If high isolation is required between individual channels, do not use this product. See Pearl-MM instead.
| OUT 7 C |
1 |
2 |
OUT 6C |
| OUT 7 NC |
3 |
4 |
OUT 6 NC |
| OUT 7 NO |
5 |
6 |
OUT 6 NO |
| OUT 5 C |
7 |
8 |
OUT 4 C |
| OUT 5 NC |
9 |
10 |
OUT 4 NC |
| OUT 5 NO |
11 |
12 |
OUT 4 NO |
| OUT 3 C |
13 |
14 |
OUT 2 C |
| OUT 3 NC |
15 |
16 |
OUT 2 NC |
| OUT 3 NO |
17 |
18 |
OUT 2 NO |
| OUT 1 C |
19 |
20 |
OUT 0 C |
| OUT 1 NC |
21 |
22 |
OUT 0 NC |
| OUT 1 NO |
23 |
24 |
OUT 0 NO |
| IN 7 A |
25 |
26 |
IN 7 B |
| IN 6 A |
27 |
28 |
IN 6 B |
| IN 5 A |
29 |
30 |
IN 5 B |
| IN 4 A |
31 |
32 |
IN 4 B |
| IN 3 A |
33 |
34 |
IN 3 B |
| IN 2 A |
35 |
36 |
IN 2 B |
| IN 1 A |
37 |
38 |
IN 1 B |
| IN 0 A |
39 |
40 |
IN 0 B |
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| Optoisolated Inputs |
| Inputs |
8 nonpolarized optoisolators |
| Input volt. |
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| DC inputs: |
3V min, 24V max, not polarized |
| AC inputs: |
3V p-p min, 24V p-p max, 40Hz or greater |
| Input switch time |
100mx max |
| Input impedance |
1.8KΩ min |
| AC input filter |
Selectable on a per-channel basis |
| Relay Outputs |
| Outputs |
8 relays |
| Relay type |
SPDT (Form C) |
| Max power |
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| DC: |
30VDC/1A |
| AC: |
125VAC/0.1A resistive, 125VAC/0.2A inductive |
| Max switching cap. |
30W (DC), 50VA (AC) |
| Max operating voltage |
220DVC, 250VAC |
| Contact resistance |
50mΩ max |
| Relay lifetime |
10,000,000 operations |
| Actuation time |
5ms max, operate or release |
| General |
| I/O header |
42 x 20 pin header; on .1" connecters |
| Mating Cable: |
DSC #C-40-18 |
| Isolation (all I/O) |
500VDC or AC, input to board or board to output |
| Power supply |
+5VDC ±10% |
| Current consumption |
200mA typical, all relays off; Additional 40mA per activated relay |
| Operating temp. |
-40°C to +85°C |
| Weight |
3.0oz/85g |
| RoHS |
Compliant |
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Opal-MM |
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