Electro-Voice 1252 - Manual (Page 119)

Electro Industries/GaugeTech Doc # E107706 V1.25 9-7
9.5: Analog Transducer Signal Output Modules
9.5.1: Overview
Q The Analog Transducer Signal Output Modules (0±1mA or 4–20mA) are available in either a 4- or
8-channel configuration. Maximum registers per request, read or write, is 17 registers.
Q Nexus 1250/1252 Unit supplies power for up to two connected Analog Output 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.
Q All outputs share a single common point. This is also an isolated connection (from ground).
Analog Transducer Signal Output Modules Specifications
Accuracy
Communication
Power Requirement
Operating Temperature
Maximum Load Impedance
RS-485, Modbus RTU
15–20Vdc at 50–200mA;
Nexus 1250/1252 Unit
supports up to 2 Modules
(-20 to 79)°C / (-4 to +158)°F
0±1mA: 10k
Ω; 4–20mA: 500 Ω
Model Numbers
1mAON4: 4-Channel Analog Output, 0±1mA
1mAON8: 8-Channel Analog Output, 0±1mA
20mAON4: 4-Channel Analog Output, 4–20mA
20mAON8: 8-Channel Analog Output, 4–20mA
Factory Settings
Modbus Address:
1mAON4, 0-1mA: 128 1mAON8, 0-1mA: 128
20mAON4, 4–20mA: 132, 20mAON8, 4-20mA: 132
Baud Rate: 57600
Default Settings
(Reset Button)
Modbus Address: 247
Baud Rate: 57600
Programmable Baud Rates: 4800, 9600, 19200, 57500
0.1% of Full Scale
Scaling Programmable
Transmit Delay Time: 0
Transmit Delay Time: 20 csec