Electro-Voice 1252, 250 operation manual Digital Dry Contact Relay Output Form C Module

9.7: Digital Dry Contact Relay Output (Form C) Module

Digital Dry Contact Relay Output (Form C) Module Specifications

Model Number	4RO1: 4 Latching Relay Outputs
Accuracy	0.1% of Full Scale
Scaling	Programmable
Communication	RS-485, Modbus RTU
	Programmable Baud Rates: 4800, 9600, 19200, 57600
Power Requirement	15–20Vdcat 50–200 mA;
	Nexus 1250/1252 Unit
	supports up to 4 Modules
Operating Temperature	(-20 to 79)°C /	(-4 to +158)°F
Maximum Load Impedance	0-1mA: 10k Ω;	4-20mA:	500 Ω
	Modbus Address: 156
Factory Settings
	Baud Rate: 57600
	Transmit Delay Time:		0
Default Settings	Modbus Address: 247
	Baud Rate: 57600
(Reset Button)
	Transmit Delay Time: 20 csec

9.7.1: Overview

The Relay Output Module consists of four Latching Relay Outputs. In Normal Mode, the device accepts commands to control the relays. Relay output modules are triggered by limits programmed with the Communicator EXT software. See the Communicator EXT User Manual for details on programming limits.

Nexus 1250/1252 Unit supplies power for up to 4 connected Relay 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.

The Modbus Map for the Analog Output Module (and operating details) can be found in the Modbus Communicating I/O Modules Manual.

Each latching relay will hold its state in the event of a power loss.

Electro Industries/GaugeTech Doc # E107706 V1.25 9-11