Analog Input Modules; 1: Overview - Electro Industries 1252 Installation And Operation Manual

9.6: Analog Input Modules

Model Numbers
Accuracy
Scaling
Communication
Power Requirement
Operating Temperature
Maximum Load
Impedance
Factory Settings
Default Settings
(Reset Button)

9.6.1: Overview

The Analog Input Modules (0±1mA, 0±20mA, 0±5V dc and 0±10V dc ) are available in 8-channel
format. Maximum registers per request, read or write, is 17 registers.
Nexus 1250/1252 Unit supplies power for up to 4 connected Analog Input modules. See section 9.2
for power and communication details. Refer to sections 5.12 - 5.13 to determine if you must use an
additonal power source, such as the EIG PSIO.
All inputs share a single common point. This is also an isolated connection (from ground).
Electro Industries/GaugeTech
Analog Input Modules Specifications
8AI1: 8-Channel Analog Input, 0±1mA
8AI2: 8-Channel Analog Input, 0±20mA
8AI3: 8-Channel Analog Input, 0±5V dc
8AI4: 8-Channel Analog Input, 0±10V dc
0.1% of Full Scale
Programmable
RS-485, Modbus RTU
Programmable Baud Rates: 4800, 9600, 19200,57600
15-20V dc at 50-200mA;
Nexus 1250/1252 Unit
supports up to 4 Modules
(-20 to 79)°C / (-4 to +158)°F
0-1mA: 10k Ω;
Modbus Address:
8AI1, 0±1mA: 136;
8AI3, 0±5V dc : 144,
Baud Rate: 57600
Transmit Delay Time: 0
Modbus Address: 247
Baud Rate: 57600
Transmit Delay Time: 20 csec
Doc # E107706 V1.25
4-20mA: 500 Ω
8AI2, 0±20mA: 140
8AI4, 0±10V dc : 148
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