AAR145-S50 Yokogawa Analog Input Module

AAR145-S50 Yokogawa Analog Input Module | New & Original Stock

Availability: 99 left in stock

Yokogawa AAR145-S50 CENTUM VP/CS 3000 FIO Subsystem The Yokogawa AAR145-S50, also cataloged as the AAR145 Analog Input Module, operates as...

SKU: AAR145-S50

Manufacturer: Yokogawa
Product No.: AAR145-S50
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AAR145-S50 CENTUM VP/CS 3000 FIO Subsystem

The Yokogawa AAR145-S50, also cataloged as the AAR145 Analog Input Module, operates as a dedicated hardware component for 4-20 mA current signal acquisition within CENTUM VP / CS 3000 FIO platforms. The hardware accepts 16 isolated analog inputs from field transmitters, converting physical loop currents into digitized data frames for real-time monitoring.

Suffix Breakdown & Model Matrix

Suffix / Identifier	Code	Description
Base Model	AAR145	Analog Input Module (16-channel, isolated)
Suffix Code 1	-S	Standard type with enhanced dual-redundant switch-over response
Suffix Code 2	5	With no explosion protection
Suffix Code 3	0	Basic type with standard factory build options
Complete Package	-S50	ISA Standard G3 corrosion coating and extended operating temperature profile

Hardware Specifications

Parameter	Specification
Model	AAR145-S50
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg (Net) / 1.5 kg (Shipping Weight)
Dimensions	178 mm x 200 mm x 94 mm
Operating Temp	-20 to +70 deg C (Extended Range)
Power Consumption	230 mA at 5 VDC (Logic Power); 540 mA at 24 VDC (Field Power)
Input Signal	4-20 mA DC
Accuracy	+-0.1% of full scale
Input Resistance	250 ohm
Update Period	10 ms
Isolation Type	Channel-to-system electrical isolation
Withstanding Voltage	1500 VAC for 1 minute (Input to system logic)
Corrosion Protection	ISA Standard G3 conformal coating

4-20 mA HART Loop Protocol & Channel Isolation

The module processes raw 4-20 mA electrical current inputs from field instruments, utilizing an internal 250 ohm precision sensing resistor per loop. The built-in circuitry achieves continuous channel-to-system galvanic isolation backed by a 1500 VAC withstanding voltage threshold. This network prevents ground loops from corrupting parallel measurement lines, suppressing high-frequency common-mode voltages and protecting downstream logic backplanes from field-side voltage spikes.

Frequently Asked Questions

Q: How does the AAR145-S50 manage an open-circuit fault on a field input loop?

A: The internal diagnostics monitor circuit continuity constantly. If the loop current drops below 0.65 mA, the module triggers a circuit-open detection flag, transmitting an input fault status code to the central control processor within the 10 ms data refresh cycle.

Q: What is the benefit of the enhanced switch-over response linked to the -S50 suffix?

A: The enhanced switch-over response enables rapid data path transition when deployed in a dual-redundant pair on an FIO baseplate. If the primary module fails, the secondary backup module assumes loop processing duties without causing signal dropout or disrupting control loop tracking.

Field Installation Guidelines

Mount the module securely into its assigned slot on the FIO baseplate, verifying that both upper and lower mechanical block levers lock firmly onto the chassis rail.
Route all 4-20 mA analog input cables through separate cabinet wire trays, maintaining distance from high-voltage AC power distribution or motor control cables.
Terminate instrument cable shields explicitly at the dedicated chassis earth/shield ground bus bar inside the marshalling panel, leaving the transmitter end ungrounded.
Ensure the local cabinet environment does not exceed the extended -20 to +70 deg C thermal threshold by keeping internal ventilation ports free of dust accumulation.

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