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YOKOGAWA ARM55C-000 | Mechanical Relay Board for CENTUM VP I/O Modules
ARM55C-000
The YOKOGAWA ARM55C-000 is a 32-channel mechanical relay output board designed for driving field output devices in CENTUM VP control systems. It converts low-voltage internal digital control signals into robust relay contact outputs with built-in fuse protection for reliable industrial switching.
Reliable Relay Signal Interfacing for CENTUM VP Systems
The YOKOGAWA ARM55C-000 Mechanical Relay Board is engineered to interface Yokogawa CENTUM VP digital output modules with high-power external field devices. Designed specifically for connection with ADV551 and ADV561 digital output modules via dedicated signal cables, the ARM55C-000 converts 24 V DC internal control logic into independent relay contact outputs suitable for driving solenoids, actuators, motor starters, and field indicators.
High-Density Channel Capacity with Individual Fuse Protection
Featuring 32 relay contact output channels, the ARM55C-000 delivers compact and efficient wiring density for industrial control cabinets. Each output channel is equipped with a built-in 2 A fuse to protect connected field wiring and internal circuitry against overcurrent conditions. The relay board operates on a 24 V DC power supply for its internal logic, providing isolated contact output switching up to 250 V AC or 125 V DC across process field applications.
Flexible Mounting and Dual-Redundant System Support
System availability and ease of installation are primary design advantages of the ARM55C-000. It features dual signal cable connectors to fully support dual-redundant digital output module configurations, guaranteeing uninterrupted signal path availability in critical process units. For cabinet installation, the board supports DIN rail mounting as standard, with options for direct wall mounting brackets or 19-inch rack mounting configurations.
Standard M3.5 Screw Terminals for Field Wiring
The ARM55C-000 is equipped with robust M3.5 pressure clamp terminal blocks for field device connections, ensuring secure wire termination and stable electric conductivity under industrial vibration environments. The layout allows rapid terminal field wiring inspection and effortless maintenance procedures during commissioning or routine plant turnarounds.
Applications
The YOKOGAWA ARM55C-000 Mechanical Relay Board is widely implemented in automated industrial facilities requiring robust discrete control outputs, including:
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Oil and Gas Refineries: Actuator control, ESD solenoid driving, and field signal isolation.
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Petrochemical Processing Plants: High-density valve control and discrete alarm actuation.
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Power Generation Stations: Motor control circuit interfacing and trip switching.
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Water and Wastewater Facilities: Pump starter command execution and chemical feed control.
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Chemical Manufacturing Plants: General process interlock switching and field device driving.
Technical Specifications
| Parameter | Specification Details |
| Model | ARM55C |
| Suffix Code | -000 (Standard type, Basic specification) |
| Output Type | Mechanical Relay Contact Output |
| Number of Output Channels | 32 Channels |
| Compatible Digital Output Modules | ADV551, ADV561 |
| Internal Power Supply | 24 V DC (100 mA maximum) |
| Contact Rating (AC) | Max. 250 V AC, 2 A per point |
| Contact Rating (DC) | Max. 125 V DC, 2 A per point |
| Maximum Total Current | 16 A per 16-channel common group |
| Protection | Built-in Fuse (2 A) per output channel |
| Field Connection Terminals | M3.5 Pressure Clamp Screw Terminals |
| Cable Connection | KS2 or AKB331 Signal Cables (Dual-redundant supported) |
| Mounting Type | DIN Rail Mounting (Optional Wall or 19-inch Rack Mounting) |
| Operating Temperature | 0 °C to 50 °C |
| Operating Humidity | 10% to 90% RH (Non-condensing) |
| Approximate Weight | Approx. 1.8 kg |
FAQ
Q: What digital output modules are compatible with the ARM55C-000 relay board?
A: The ARM55C-000 is designed for direct connection with Yokogawa ADV551 and ADV561 digital output modules using dedicated signal cables.
Q: Does the ARM55C-000 relay board support dual-redundant configurations?
A: Yes, the ARM55C-000 features dual cable connection interfaces to support dual-redundant digital output module setups.
Q: What type of circuit protection is included on each channel?
A: Each individual output channel on the ARM55C-000 includes a built-in 2 A fuse for overcurrent protection.
Q: What terminal type is used for connecting field wiring on the ARM55C-000?
A: Field connections use standard M3.5 pressure clamp screw terminal blocks.
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