ALF111-S51 Yokogawa Foundation Fieldbus Communication Module
Brand Name:Yokogawa
Certification:CE
Model Number:ALF111-S51
Minimum Order Quantity:1
Delivery Time:Negotiate
Payment Terms:T/T
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Product Details
ALF111-S51 Yokogawa Foundation Fieldbus Communication Module
Manufacturer : Yokogawa
Product No. : ALF111-S51
Product Type : Foundation Fieldbus Communication Module
Model : ALF111 = Foundation Fieldbus Communication Module
-S : Standard type
5 : With no explosion protection
1 : With ISA Standard G3 option
Weight : 0.4 Kg
Shipping Weight : 2 Kg
GENERAL
This document describes about Model ALF111 FOUNDATION fieldbus
Communication Module (for FIO) which is to establish communication
between field control stations (FCS) and fieldbus devices compliant
to the FOUNDATION fieldbus(H1) such as transmitters and valve
positioners.
HARDWARE SPECIFICATIONS
The FOUNDATION fieldbus communication module (ALF111) performs as
the Link Active Scheduler (LAS) to exchange data with devices
compliant with FOUNDATION fieldbus (H1) protocol. The hardware
specifications for this module are as shown in the table below
| Item | Specifications |
| Model | ALF111 |
| Interface | FOUNDATION fieldbus (low speed voltage mode) 4 ports (1 segment (*1) per port) |
| Transmission speed | 31.25 kbps |
| Withstanding voltage | From field to system: 1500 V AC/minute |
| Bus connection (external connection) | • Pressure clamp terminals (removable terminal block with built-in
terminators that can be switched on/off. ) • Connects with terminal board via a dedicated cable. |
| No. of control I/O channels (*2) | Max. 48 points/segment (Complies with high- and medium-speed scanning cycle by specifying up to 6 points of I/O points as high-speed scanning type on the ER bus.) |
| No. of fieldbus devices | Max. 32 units per segment (*3) (ALF111 counts as one unit) (*4) |
| Communication functions | LAS function, Clock master function |
| Dual-redundancy | Enabled to set up two units of ALF111 installed in the annexed slots in the same node unit. |
| Current consumption | 0.5 A or less |
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ALF111-S51 Yokogawa Foundation Fieldbus Communication Module
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