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Yokogawa ARM55T Mechanical Relay Terminal Board

Yokogawa ARM55T Mechanical Relay Terminal Board

Configured for high-reliability signal conversion and switching in process control platforms, the Yokogawa ARM55T (ARM55T Mechanical Relay Terminal Board) provides direct physical/electrical execution.

Hardware Specifications

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Availability: Low stock: 50 left

SKU: ARM55T
Vendor: Yokogawa
Category: Mechanical Relay Terminal Board
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Configured for high-reliability signal conversion and switching in process control platforms, the Yokogawa ARM55T (ARM55T Mechanical Relay Terminal Board) provides direct physical/electrical execution.

Hardware Specifications

Parameter Specification
Model ARM55T
Brand Yokogawa
Origin Standard Industrial Specification
Weight 2.2 kg
Dimensions 19-inch rack mount, 3U height
Operating Temp 0 deg C to 50 deg C
Power Consumption 24 V DC, approx 0.65 to 0.85 A
Contact Points 32 points (SPST, Normally Open or Normally Closed)
Maximum Load 30 V DC, 1.5 A per point
Isolation Voltage 2 kV AC (field terminals to case)

Channel-to-Channel Isolation and Loop Protocol

The hardware configuration maintains strict galvanic isolation and high dielectric strength across power and field terminals to suppress transient voltage surges and prevent ground loop interference from heavy-duty actuators. Integration with standard process control communication protocols and 32-channel wet contact relay switching ensures reliable execution of control interlocks, alarm actuation, and transparent command transmission without signal degradation.

Frequently Asked Questions

Q: What are the restrictions regarding load switching limits across the ARM55T terminal board channels?

A: Each individual point must operate within specified maximum load ratings of 30 V DC at 1.5 A to prevent contact degradation or welding under continuous load.

Q: How is manual intervention managed during system maintenance on individual channels?

A: Each channel features a dedicated integrated AUTO/OFF/ON override switch, permitting manual control state manipulation during testing or commissioning phases.

Field Installation Guidelines

Mount the unit securely into a standard 19-inch rack enclosure with 3U height clearance, ensuring proper grounding continuity to the cabinet frame. Route high-load power switching lines away from sensitive low-voltage control cables and use shielded wiring where applicable. Terminate cable shielding and ground drain wires securely to the designated cabinet earth grounding bar using M4 screw terminals.