ARM55T-000 Yokogawa Relay Output Board

Yokogawa ARM55T-000 CENTUM Relay Terminal Board

Yokogawa ARM55T-000 CENTUM Relay Terminal Board

Availability: 20 left in stock

Yokogawa ARM55T-000 Mechanical Relay Terminal Board The Yokogawa ARM55T-000, also cataloged as the ARM55T Mechanical Relay Terminal Board, operates as...

SKU: ARM55T

Manufacturer: Yokogawa
Product No.: ARM55T
Product Type: Relay Terminal Boards
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1350g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ARM55T-000 Mechanical Relay Terminal Board

The Yokogawa ARM55T-000, also cataloged as the ARM55T Mechanical Relay Terminal Board, operates as a dedicated hardware component for converting digital logic outputs into mechanical contact switching within Yokogawa CENTUM CS 3000 and ProSafe-RS control architectures.

Suffix Breakdown & Model Matrix

The model code suffix details the hardware interface and physical structural configuration for the ARM55T series:

ARM55T: Base series code designating 32-channel mechanical relay terminal board units.
-000: Standard base revision specifying non-redundant terminal execution, standard 19-inch rack / DIN-rail mounting adapter compatibility, and default connector pinouts without special option coatings.

Hardware Specifications

Parameter	Specification
Model	ARM55T-000
Brand	Yokogawa
Origin	Japan
Weight	1.35 kg to 2.20 kg
Dimensions	19-inch rack mount (3U height) or DIN rail adapter mount
Operating Temp	-10 deg C to +55 deg C
Storage Temp	-20 deg C to +70 deg C
Humidity Range	5% to 85% RH (non-condensing)
Power Consumption	18 W typical (all 32 relays energized)
Power Supply	24 VDC (+/- 10%)
Relay Type	Mechanical wet contact
Channels	32 points (SPST or SPDT depending on configuration)
Contact Rating	5 A at 250 VAC / 30 VDC
Max Switching Voltage	250 VAC / 30 VDC
Max Switching Current	5 A per contact
Response Time	<= 12 ms (energize), <= 8 ms (de-energize)
Time-Stamp Resolution	1 ms, buffer up to 1,024 events
Galvanic Isolation	2 kV AC (field terminals to case), 500 V AC (power terminals to case)
Insulation Resistance	>= 10 Mohm at 500 VDC
Status Indicators	32 LED indicators (1 per channel)
Channel Switches	AUTO / OFF / ON three-position switch per channel
Certifications	CE, UL, CSA

Galvanic Isolation and Signal Integrity Characteristics

The unit incorporates galvanic isolation rated at 2 kV AC between field contact terminals and the enclosure housing, alongside 500 V AC isolation between primary power supply terminals and ground. Channel-to-channel physical separation mitigates electrical noise and cross-talk during concurrent switching of high-inductance field loads. Integrated sequence-of-events (SOE) execution logs contact state changes into an internal 1,024-entry hardware buffer with 1 ms timestamp resolution before transmitting data across the system bus, maintaining chronological accuracy during fault conditions.

Frequently Asked Questions

Q: What is the maximum continuous current rating per contact on the ARM55T-000 terminal board?

A: Each relay contact supports a maximum continuous switching current of 5 A at 250 VAC or 30 VDC. External interposing contactors must be installed for electrical loads exceeding 5 A.

Q: How does the hardware handle manual output overrides during loop commissioning?

A: Each of the 32 individual output channels features an independent hardware AUTO/OFF/ON switch mounted directly on the terminal board, permitting direct physical override without altering software application logic.

Q: What is the primary function of the internal 1,024-event buffer?

A: The internal hardware buffer logs discrete contact state transitions with 1 ms timestamp resolution, maintaining event chronological order during burst input activity or controller communication latency.

Field Installation Guidelines

Mount the assembly inside a standard 19-inch 3U instrument enclosure or attach via dedicated DIN-rail adapter plates. Maintain a minimum vertical spacing of 50 mm above and below the board assembly to ensure adequate convective air dissipation. Terminate field signal conductors using insulated ferrules tightened to terminal block screws with a torque specification of 0.5 Nm to 0.6 Nm. Separate incoming 24 VDC power wiring from field AC load lines to prevent electromagnetic coupling. Ensure field conduit connections maintain a minimum engagement of 5 full NPT threads where rigid metal conduit enters the enclosure. Secure the frame grounding connection directly to the cabinet signal ground bus using copper grounding wire rated for a minimum cross-sectional area of 2.5 mm square.

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