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Yokogawa SARM55D FIO Relay Board

The Yokogawa SARM55D, also cataloged as the SARM55D Relay Board for FIO, operates as a dedicated hardware component for relay output interface execution within Yokogawa FIO architecture platforms.

Layout Configuration Selection: Layout 1

Hardware Specifications

Parameter Specification
Model SARM55D
Brand Yokogawa Electric Corporation
Origin Japan
Weight 2.2 kg
Dimensions 90 x 70 x 125 mm
Operating Temp -10 to +50 deg C
Power Consumption 2 W (Maximum)
System Platform FIO (Field network I/O)
Input Voltage 100-240 VAC, 50/60 Hz
Operating Range 0 to 100 deg C
Resolution 0.1 deg C
Accuracy +/- 0.5 deg C
Response Time Less than 1 second
Storage Temperature -20 to +60 deg C
Humidity Range 5 to 95% RH (non-condensing)
Communication Protocols Modbus/TCP, Modbus/RTU, PROFIBUS-DP, CC-Link, DeviceNet

Process Control & DCS Instrumentation Technical Attributes

This FIO terminal board hardware implements discrete loop isolation and digital data integration through channel-to-channel isolation matrices. The hardware interfaces directly with multi-protocol field architectures, maintaining electrical isolation between high-voltage field execution devices and internal backplane control logic. By incorporating direct galvanic separation barriers, the board routes current signals while preventing common-mode voltage spikes from inducing cross-talk or compromising system bus communication integrity.

Frequently Asked Questions

Q: Does the terminal interface require a specific software utility for internal parameter mapping?

A: Yes, custom logic distribution and parameter configuration profiles require the implementation of the LL50A ladder programming tool via an authorized system interface connection.

Q: What grounding method is required to prevent loop signal corruption from electrical noise?

A: You must implement a dedicated low-impedance single-point shield ground connection directly to the main cabinet earth bus bar, ensuring power wiring stays physically separate from the data lines.

Field Installation Guidelines

  • Cabinet Mounting: Secure the housing framework firmly inside the enclosure panel, ensuring compliance with the 90 x 70 x 125 mm physical layout footprint and verifying mechanical stability.
  • Terminal Signal Wiring: Route all AC 100-240 V electrical input power lines through designated power distribution tracks, keeping them isolated from low-voltage communication cables.
  • Grounding Requirements: Connect the hardware frame ground wire to the industrial earth grid prior to energizing any internal electrical circuits.
  • Thermal Mitigation: Maintain standard internal cabinet air cooling profiles to guarantee that the local ambient temperature does not exceed the +50 deg C operating threshold limit.

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