Description
ALF111 Yokogawa Foundation Fieldbus Communication Module
This document describes the hardware specifications of the ALF111 Foundation Fieldbus communication module, which is to be installed in Node Unit for ESB Bus (ANB10S or ANB10D), Node Unit for ER Bus (ANR10S or ANR10D), Compact Field Control Unit (for FIO) (AFF50S or AFF50D) and Compact Field Control Unit (for Vnet/IP, for FIO) (AFV10S or AFV10D) when used
STANDARD SPECIFICATIONS
ALF111 Module
An ALF111 works as the Link Active Scheduler (LAS) of FOUNDATION fieldbus (H1) and transfers data from/to field devices for FOUNDATION fieldbus.
Interfaces
FOUNDATION fieldbus (Low speed Voltage Mode) 4 ports (one port is connected to one segment)
Transmission Speed
31.25 kbps
Function
LAS (needs to be prepared a MTL5995 (fieldbus power supply)).
Specifications for Fieldbus Device Connections
See General Specifications - Model LFS2610,Foundation Fieldbus Communication Package (for ALF111)
Current consumption
0.5 A or less
Withstanding Voltage
Field-to-system: 1500 V AC for 1 minute
Bus Connections (external connections)
Can be chosen from the followings:
• Pressure clamp terminals (removable terminal block with built-in terminators that can be switched on/off)
• Connecting to a terminal board using AKB336 (the YCB138 terminators are mounted on the terminal board).
Installation
To be installed in an ANB10S, ANB10D, ANR10S,ANR10D, AFF50S, AFF50D, AFV10S or AFV10D nest.
Weight
0.4 kg
