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 3V DC to 24V DC or 6.3mA to 50mA
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.
Features
| Indication display | 24 LED's |
| Indication mode | |
| Logic "1" | LED on |
| Logic "0" | LED off |
| Input electrical characteristics | |
| Logic input low voltage | <0.8V DC |
| Logic input high voltage | +3V DC to +24V DC |
| Logic input high current | 7.6mA to 50mA |
| Logic "1" | Voltage input high |
| Logic "0" | Voltage input low |
| Isolation voltage | 2500V DC or peak AC |
| Dry Contact Input | |
| Int pull-up voltage supply | +5V DC |
| Logic "1" | Input Close |
| Logic "0" | Input Open |
| Power requirements | +5V @ 400mA max. |
| Operating temp | 0°~60°C |
| Storage temp | -20°~80°C |
| Operating humidity | 5~95%, non-condensing |
| Dimensions | 8.66" x 5.20" (220mm x 132mm) |
| Cat No. | Description | Price |
| TB-24P | 24 Isolated Input Terminal | $119.00 |
©1995 Circuit Specialists, Inc.