Yokogawa ATD5S-00 CENTUM Series Terminal Block

Configured for field wiring interface execution in CENTUM VP/CS 3000 systems, the Yokogawa ATD5S-00 (ATD5S Terminal Block Unit) provides direct physical/electrical execution. The hardware serves as the physical interface connecting external discrete or analog field components directly to the 32-channel system I/O modules via a pressure-clamp termination structure.

Hardware Specifications

Process Control & Channel-to-Channel Isolation

The Yokogawa ATD5S-00 manages high-density signal distribution without the use of onboard surge absorbers, operating as a direct pass-through terminal matrix. The insulation resistance of 100 MΩ ensures electrical separation between adjacent signal paths, preventing cross-talk and crosstalk-induced signal degradation in paired analog or high-frequency digital loops. Channel-to-channel isolation parameters are dictated by the paired active module, while the physical base unit delivers a dielectric strength of 1500 VAC to protect the internal FIO baseplate components against common-mode voltage spikes arising from external field grounding differentials.

Frequently Asked Questions

Q: How does the lack of internal surge absorbers affect installation choices for the -00 suffix variant?

A: The -00 suffix designates a standard terminal assembly without onboard surge suppression components. It must be deployed in environments where external lightning/surge protection is already established on the signal loops, or for general-purpose digital and analog signal circuits where high-voltage transients are not anticipated.

Q: What are the continuous electrical current limitations when multiple channels are loaded?

A: While individual terminals accommodate standard field signals, the common return bus path features a strict hardware limit of 5 A maximum continuous current. Exceeding this thermal threshold will result in structural degradation of the flame-retardant engineering plastic housing.

Field Installation Guidelines

• Pressure-Clamp Terminal Termination: Strip field conductors to the designated engineering length and use round crimp terminals with M4 screws. Secure the connections within the pressure-clamp terminal blocks using a calibrated torque screwdriver to prevent vibration-induced loosening.
• Conductor Sizing Requirements: Utilize copper field wiring with a cross-sectional area ranging from 0.5 to 2.5 mm² (equivalent to AWG 20-14). Ensure that the insulation is rated for the maximum expected system loop voltage.
• Shield Grounding Matrix: Terminate the external cable shields directly to the dedicated earth/shield terminal provided on the unit assembly. This path must connect straight to the instrument ground busbar via a low-impedance copper strap to optimize noise immunity.