Electro-Voice 1252, 250 operation manual Analog Input Modules

9.6: Analog Input Modules

Analog Input Modules Specifications

	8AI1: 8-Channel Analog Input, 0±1mA
Model Numbers	8AI2: 8-Channel Analog Input, 0±20mA
	8AI3: 8-Channel Analog Input, 0±5Vdc
	8AI4: 8-Channel Analog Input, 0±10Vdc
Accuracy	0.1% of Full Scale
Scaling	Programmable
Communication	RS-485, Modbus RTU
	Programmable Baud Rates: 4800, 9600, 19200,57600
Power Requirement	15-20Vdcat 50-200mA;
	Nexus 1250/1252 Unit
	supports up to 4 Modules
Operating Temperature	(-20 to 79)°C / (-4 to +158)°F
Maximum Load	0-1mA: 10k Ω;	4-20mA: 500 Ω
Impedance
	Modbus Address:
	8AI1, 0±1mA: 136;	8AI2, 0±20mA: 140
Factory Settings	8AI3, 0±5Vdc: 144,	8AI4, 0±10Vdc: 148
	Baud Rate: 57600
	Transmit Delay Time: 0
	Modbus Address: 247
Default Settings
	Baud Rate: 57600
(Reset Button)
	Transmit Delay Time: 20 csec

9.6.1: Overview

The Analog Input Modules (0±1mA, 0±20mA, 0±5Vdc and 0±10Vdc) 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 Doc # E107706 V1.25 9-9