ALF111-S01 YOKOGAWA Communication Module

ALF111-S01 ALF111 Yokogawa Foundation Fieldbus H1 Module

ALF111-S01 ALF111 Yokogawa Foundation Fieldbus H1 Module

Disponibilidad: 99 Quedan en stock

YOKOGAWA ALF111-S01 Foundation Fieldbus Module The YOKOGAWA ALF111-S01, also cataloged as the ALF111 Foundation Fieldbus H1 Communication Module, operates as...

Código: ALF111-S01

Manufacturer: Yokogawa
Product No.: ALF111-S01
Product Type: Fieldbus Communication Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Descripción Reseñas

YOKOGAWA ALF111-S01 Foundation Fieldbus Module

The YOKOGAWA ALF111-S01, also cataloged as the ALF111 Foundation Fieldbus H1 Communication Module, operates as a dedicated hardware component for deterministic field network data exchange within CENTUM VP and CENTUM CS 3000 Distributed Control System architectures. The hardware module mounts directly onto designated field control units or node units to coordinate digital communications between the centralized processor blocks and intelligent field transmitters or valve positioners. By maintaining scheduling regimes and clock synthesis, the unit establishes physical layer linkage across localized industrial process segments.

Hardware Specifications

Parameter	Specification
Model	ALF111-S01
Brand	Yokogawa
Origin	Indonesia
Weight	0.40 kg
Dimensions	88 x 58 x 23 mm
Operating Temp	-20 deg C to +70 deg C
Power Consumption	4.5 W max
Interface Type	Foundation Fieldbus H1 (Low-speed voltage mode)
Ports	4 ports (1 segment per port)
Transmission Speed	31.25 kbps
Device Capacity	Max. 32 units per segment (Module counts as 1 unit)
Isolation Voltage	1500 VAC per minute (Field-to-system, Channel-to-channel)
Input Voltage	24 VDC +/-10%
Current Consumption	Less than or equal to 0.5 A

FOUNDATION Fieldbus & Profibus PA Connectivity Attributes

The ALF111-S01 firmware provides native execution of the Link Active Scheduler (LAS) and Clock Master definitions, establishing master-slave polling schedules and token distribution over the 31.25 kbps bus structure. The physical interface integrates 4 distinct ports, where each port drives an independent H1 segment isolated electrically up to 1500 VAC to safeguard host backplane circuits against transient surges. Internal hardware switches actuate switchable, built-in terminators directly on the removable pressure clamp terminal block, resolving signal reflection issues without requiring external resistor networks. The internal communication processor manages deterministic cyclic data publishing alongside acyclic diagnostic alerts, allowing simultaneous tracking of up to 48 control I/O channels per segment under rigid macrocycle constraints.

Frequently Asked Questions

Q: How does the ALF111-S01 handle module failure within dual-redundant control configurations?

A: Dual redundancy requires deploying two identical modules in annexed slots on the base plate. The field control unit monitors the module health status, and upon detecting a hardware fault, shifts active LAS operations to the standby unit within defined network timeout tolerances to prevent bus disruption.

Q: Is the ALF111-S01 capable of supplying electrical operating power directly to connected field instruments via the H1 segment cable?

A: No. The module contains isolation barriers and serves strictly as a data communication interface. External, isolated fieldbus power supply units must be integrated into the network segment to supply the required operating current to field transmitters and positioners.

Field Installation Guidelines

Mount the module into the designated slot on the AFV30, AFV40, A2FV50, A2FV70 field control units, or ANB10/ANB11 node units, validating that the backplane connectors seat completely before securing the module latching mechanisms. Field wiring termination requires stripping the multi-core fieldbus cable according to the pressure clamp terminal specifications, ensuring that the cable shield maintains continuous coverage up to the grounding bar. Installers must activate the internal bus terminators only at the two extreme physical ends of the H1 segment, confirming that intermediate devices do not have termination enabled to avoid overloading the signal path. All field cables must be separated from high-voltage motor conductors or AC power distribution lines by standard industrial clearance distances to prevent inductive noise injection into the low-speed voltage mode transmission.

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