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Help CenterYokogawa Model ALF111 ALF111-S00 Foundation Fieldbus Communication
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Yokogawa Model ALF111 Foundation Fieldbus Communication Module (for FIO)
GENERAL
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) (*1) and Compact Field Control Unit (for Vnet/IP for FIO) (AFV10S or AFV10D) (*2) when used.
*1: Supported by R3.04 or later
*2: Supported by R3.05 or later
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) GS 33Q03L60-31E.
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
Installation Restrictions
Number of ALF111s per FCS:
Standard Field Control Station : Max. 16 (*1) (8 pairs for a dual-redundant configuration) / FCS (*2)
Enhanced Field Control Station : Max. 32 (*3) (16 pairs for a dual-redundant configuration) / FCS (*4)
Compact Field Control Unit : Max. 30 (15 pairs for a dual-redundant configuration) / FCS (*5)
Compact Field Control Unit (for Vnet/IP for FIO) : Max. 32 (16 pairs for a dual-redundant configuration) / FCS (*6)
Number of ALF111s per system of EB401: Max. 8 / remote system (*7)
Number of ALF111s per node: Max. 8 / node
*1: The maximum number of ALF111 may be two depending on the database type selected as the FCS database. For details refer to GS “Control Function for Standard Field Control Station (for FIO) (GS 33Q03K30-31E).”
*2: AFS30S AFS30D AFS40S AFS40D
*3: The maximum number of ALF111 may be 16 depending on the database type selected as the FCS database. For details refer to GS “Control Function for Enhanced Field Control Station (for FIO) (GS 33Q03K31-31E).”
*4: AFG30S AFG30D AFG40S AFG40D AFG81S AFG81D AFG82S AFG82D AFG83S AFG83D AFG84S AFG84D
*5: AFF50S AFF50D
*6: AFV10S AFV10D
*7: Number of ALE111 ALR111 ALR121 ALF111 and ALP111 : Max. 8 / remote system
ALF111 ALF111-S00 ALF111-S01 ALF111-S00/F9S00 ALF111-S01/F9S00
ALP111 ALP111-S00 ALP111-S01
ALR111 ALR111-S00 ALR111-S01
ALR121 ALR121-S00 ALR121-S01
ALE111 ALE111-S00 ALE111-S01
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