ALU4-D Yokogawa Analog Input System

ALU4-D Yokogawa Modular Analog Input I/O System

ALU4-D Yokogawa Modular Analog Input I/O System

Disponibilidad: 10 Quedan en stock

Yokogawa ALU4-D Modular I/O System Configured for high-speed signal processing in CENTUM VP platforms, the Yokogawa ALU4-D (ALU4-D Modular Analog...

Código: ALU4*D

Manufacturer: Yokogawa
Product No.: ALU4*D
Product Type: Analog Input Modules
Product Origin: Japan
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

Descripción Reseñas

Yokogawa ALU4-D Modular I/O System

Configured for high-speed signal processing in CENTUM VP platforms, the Yokogawa ALU4-D (ALU4-D Modular Analog Input System) provides direct electrical execution of process variable acquisition and analog signal conditioning.

Hardware Specifications

Parameter	Specification
Model	ALU4-D
Brand	Yokogawa
Origin	Japan
Weight	0.2 kg
Dimensions	80 x 50 x 25 mm
Operating Temp	Industrial Standard
Power Consumption	310 mA (5 VDC), 450 mA (24 VDC)
System	CENTUM VP / CS 3000
Data Update Period	10 ms
Step Response	100 ms

Process Control and Channel-to-Channel Isolation

The ALU4-D operates as a central interface for field sensors, where it conditions signals from pressure, flow, and temperature transmitters. Yokogawa engineers integrate channel-to-channel isolation within the module architecture to suppress electromagnetic interference. This physical separation prevents common-mode voltage from corrupting analog measurements across the I/O bus. Furthermore, the system employs advanced filtering to maintain measurement stability against ambient temperature fluctuations.

Frequently Asked Questions

Q: How does the system handle transmitter power requirements?

A: The module supplies 14.8 V to 26.4 V to 2-wire transmitters. You must configure the pin settings for either 2-wire or 4-wire loop topologies on a per-channel basis to ensure proper excitation.

Q: Can operators perform module maintenance without system shutdown?

A: The modular architecture permits the replacement of individual units. However, you must verify that the cabinet power remains stable during the extraction process to avoid communication resets on the backplane bus.

Field Installation Guidelines

Mounting: Secure the module onto the dedicated I/O base unit. Ensure the pressure clamp terminals engage firmly to maintain contact integrity in high-vibration zones.
Wiring: Use shielded twisted-pair cabling for all analog inputs. Route these cables away from high-voltage AC feeders to minimize induced noise.
Grounding: Connect the cable shields to the cabinet ground bus at a single point. This technique prevents ground loops, which introduce errors into 4-20 mA readings.
Validation: Check the loop current with a calibrated multimeter before connecting the field signals to the module terminals. Confirm that the input voltage falls within the defined operational range to prevent signal clipping.

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