Hardware reference guide

Intrinsically Safe Modules
446
35013379 02 October 2007
140AII33010 Intrinsically Safe Current Input Module
Overview The Quantum 140AII33010 Intrinsically Safe Current Input module interfaces with
eight intrinsically safe analog inputs which are software-configurable. The module
accepts 0 ... 20 mA, 0 ... 25 mA, and 4 ... 20 mA inputs. The module allows any mix
and match of current input ranges that can be configured by the software. The
module provides power to intrinsically safe transmitters located in hazardous areas.
Specifications Specifications for the Quantum 140AII33010 Intrinsically Safe Current Input module
are as follows.
Specifications
Number of Channels 8
LEDs Active (Green)
F (Red)
1 ... 8 (Red), 1 per channel
Note: This module produces a fault signal F if any one
channel detects a broken wire condition or an out-of-
range condition (4 ... 20 mA only).
Current Input
Linear Measuring Range 4 ... 20 mA
0 ... 20 mA
0 ... 25 mA
Absolute Maximum Input 25 mA internally limited
Input Impedance 100 Ω +/- 0.1% between V+ and signal terminals
Resolution 4 ... 20 mA, 0 to 4,095 counts
4 ... 20 mA0 to 16,000 counts
0 ... 20 mA, 0 to 20,000 counts
0 ... 25 mA, 0 to 25,000 counts
Available Voltage Terminals V+, V-, :~ 14.5 Vdc at 25 mA
Terminals V+, Signal :~ 13.6 Vdc at 20 mA
Accuracy Error @ 25°C Typical: +/- 0.05% of full scale
Maximum: +/- 0.1% of full scale
Linearity + 0.003% of full scale
Accuracy Drift w/ Temperature Typical: +/- 0.0025% of full scale /°C
Maximum: +/- 0.005% of full scale /°C
Common Mode Rejection > 100 dB @ 50/60 Hz
Input Filter Single pole low pass, -3 dB cutoff @ 15 Hz, +/- 20%
Isolation
Channel to Channel None
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com