TB-24P
24 Opto-Isolated Digital Inputs Termination Board
2500 VDC Optical Isolation !!


Description

The TB-24P digital input termination board features high-voltage opto-isolation in all inputs. It provides 24 channels which are accessed through a single 50-pin connector, standard on the AD-Series digital I/O boards, such as ACL-7122, ACL-7124 and PET-48DIO.

Each opto-isolated digital input accepts from 3 VDC to 24 VDC or 6.3 mA to 50 mA by changing a current limiting resistor for logic high. In addition, opto-isolated inputs provide both isolation between separate channels and between each input channel and your PC system. Isolation prevents floating potential and ground loop problems from damaging the PC.

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Feautures

  • 24 opto-isolated digital inputs
  • 50-pin opto-22[tm] compatible connector
  • Thresholds from 3 VDC to 24 VDC, adjustable by changing current-limiting resistors
  • 2500 V optical isolation
  • LEDs indicate input channel status
  • Jumper selectable for dry contact or voltage input mode
  • Screw terminals for easy field wiring

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Specifications

  • Indication display : 24 LEDs
  • Indication mode :
    Logic "1" : LED on
    Logic "0" : LED off
  • Input electrical characteristics
    Logic input low voltage : < 0.8 V    DC
    Logic input high voltage : +3 V    DC to +24 VDC
    Logic input high current : 7.6 mA to 50 mA
    Logic "1" : Voltage input high
    Logic "0" : Voltage input low
  • Isolation voltage : 2500 VDC or peak AC
  • Dry Contact Input
    Int pull-up voltage supply : +5 V    DC
    Logic "1" : Input Close
    Logic "0" : Input Open

  50-pin Connector Assignment

port C0 data 7
port C0 data 6
port C0 data 5
port C0 data 4
port C0 data 3
port C0 data 2
port C0 data 1
port C0 data 0
port B0 data 7
port B0 data 6
port B0 data 5
port B0 data 4
port B0 data 3
port B0 data 2
port B0 data 1
port B0 data 0
port A0 data 7
port A0 data 6
port A0 data 5
port A0 data 4
port A0 data 3
port A0 data 2
port A0 data 1
port A0 data 0
+5 Volt
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49		 2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND

Physical/Environment

  • Power requirements : +5V @ 400 mA max.
  • Operating temperature : 0 ~ 60ºC
  • Storage temperature : -20 ~ 80ºC
  • Operating humidity : 5~95%, non-condensing
  • Dimensions : 220 mm x 132 mm

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Ordering Information

TB-24P : 24 Opto-isolated Inputs Termination Board
includes one 1.5 meter, 50-pin flat cable

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