1100 Series

Opto-Isolated Digital Signal Conditioning Blocks

1100 Series Overview

Intelligent Instrumentation provides several digital input and output modules and accessories providing safe, reliable interfacing to industrial test, measurement and control applications. When installed near individual field loads, our PCI-1100 series I/O modules create a rugged protective isolation barrier, effective to 4kV, between the field and your PC-based Data Acquisition system. Use of these modules can also reduce field wiring costs while establishing an economical, manageable approach for system expansion and repair.

The PCI-1100 Series are digital, optically isolated, signal conditioning blocks. A separate opto-block is used for each channel, allowing complete I/O flexibility. The twelve different opto-blocks are divided into two groups: standard and slimline.

All input models accept both AC and DC voltages. Each provides a TTL output to drive a standard digital input. Different models are provided for AC and DC outputs. These units convert TTL outputs from the data acquisition system to switch higher voltage (and current) load. The DC output devices present an open collector NPN transistor to the load. The AC output units contain zero crossing circuitry and switch their loads with triacs.

Various combinations of the available opto-blocks can be intermixed on one termination panel. However, each contiguous group of eight channels must contain only input or output opto-blocks. This is because the digital channels on Intelligent Instrumentation Data Acquisition plug-in I/O boards, USB portable and EDAS Ethernet I/O systems, and option modules are programmable as inputs or outputs in byte-size (8 channels) units.