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Functional
Description
The DB-24P is a 24 channel isolated digital
input daughter board for DIO24,DIO48,DIO144 OPTO-22
Compatible digital input board or any 722,724, digital
input board . The optically isolated inputs of the DB-24P
consist of a bi-directional opto-couple with a resistor
for current sensing . You can use the DB-24P to sense DC
signal from TTL levels up to 24V. You can also use DB-24P
to sense a wide range of AC signals. The DB-24 P
registers a constant logic high if the frequency of the
input AC signal is greater or equal to 1 kHz, and if the
voltage of the AC signal is at least 4Vrms. If you are
using AC input signal ,you must short the AC filter
Jumper. You can use the board to isolate the computer
from large common-mode voltages ,ground loops, and
voltage spikes that often occur in industrial
environments.
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Features
- Optically isolated
digital input channels
- Connects directly to DIO24,DIO48,DIO144
OPTO-22 compatible digital input card or any 722,724
OPTO-22 compatible digital
input board.
- AC/DC Signal Input
- AC Signal Input with filter
- Input buffer with voltage comparators
Applications
- Isolated digital
input sensing
- Testing Automation
Ordering Information
(DB-24P)
DB-24P : 24-channel
isolated digital input daughter board
DB-24P/DIN: DB-24P
with DIN-Rail mounting
Include
CA-5015 : 50-Pin flat cable 1.5m
Options
CA-5010 : 50-pin flat cable 1.0m
CA-5020 : 50-pin flat cable 2.0m
Ordering Information (DB-24PD)
DB-24PD : DB-24P
with 37-pin D-sub connector
DB-24PPD/DIN : DB-24PPD
DB-24PD with DIN-Rail mountong
Include
CA-3710 : 37-pin D-sub Connector cable 1m
Options
CA-5010 : 50-pin flat cable 1.0m
CA-5020 : 50-pin flat cable 2.0m
CA-3720 : 37-pin D-sub connector cable 2.0m
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Specifications
- I/O connector Electrical Specifications
- Configuration : 24 optically isolated digital
input channels
- Compatibility : TTL compatible
- Digital Input
- Number of channels : 24,each with its own ground
reference isolated from other channels
- Maximum input voltage :24 VDC or 24 VAC
- Digital Logic Level
LEVEL |
Minimum |
Maximum |
Input low voltage (DC or peak AC)
|
0 |
+/-1V |
Input high voltage DC /1kHz AC |
+/-2.8VDC ? 4Vrms |
+/-24VDC 24VAC |
- Input impedance : 1.2k
- Source Current
5V inputs
: 4mA/channel minimum
24V inputs
: 20mA/channel minimum
- Response Time :20us without filter / 2.2ms with
filter
- Power Supplies : +5v :336mA /maximum
- Board Dimension : 220 mm x 132 mm
- Operating Temperature : 0 -60?C
- Storage Temperature : -20-70?C
Humility : 5% to 90 % noncondensing
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