4
Instruction manual
1
Intended use
The Modbus RTU is used to upgrade Electric GF Acutators Type EA25, EA45, EA120 and EA250
with the Modbus interface. The board has to be installed into the designated slot of the
actuator. This board can be used for 24 VAC/DC as well as for 100-230 VAC actuator versions.
The connection with the customer provided PLC will be realized via two M12 plugs.
2
About this document
This document contains all the necessary information to assemble, commission or maintain
the product.
2.1
Warnings
In this instruction manual, warnings are used, which shall warn you of death, injuries or mate-
rial damage. Always read and observe these warnings!
CAUTION!
Dangerous situation!
Non-observance may result in minor injuries.
►
Measures to avoid the danger.
2.2
Further symbols and labels
Symbol
Meaning
1.
Call for action in a certain order: Here, you have to do something.
►
Call for action: Here, you have to do something.
2.3
Other applicable documents
•
Planning Fundamentals GF Piping Systems
•
Operating Instructions for Electric Actuators EA25-250: MA_00023_Electric_Actuator_
EA25-EA250_UL
These document can be obtained through the GF Piping Systems representative or at www.
gfps.com.
2.4
Abbreviations
Abbreviation
Meaning
RTU
Remote Terminal Unit
PLC
Programmable Logic Controller
DCS
Distributed Control System
HMI
Human Machine Interface
