Yokogawa AMM32T S2 CENTUM VP Terminal Boards

Configured for 32-channel analog I/O signal termination in CENTUM DCS networks, the Yokogawa AMM32T S2 (AMM32T Terminal Board) provides direct physical/electrical execution.

Hardware Specifications

Channel-to-Channel Isolation & Signal Termination

The AMM32T S2 is engineered to interface 32 separate analog input or output channels directly from field transmitters to internal system I/O modules:

• Isolation and Surge Protection Routing: The physical terminal layout enables clean wiring paths that support external galvanic isolation barriers, ensuring channel-to-channel isolation is maintained and preventing high-voltage transients from entering the internal backplane logic.
• 4-20 mA HART Loop Shield Management: Grounding terminals on the board allow shield wires from multi-core field cables to be terminated at a single equipotential reference point. This structure minimizes signal degradation on standard 4-20 mA HART loop protocol lines due to high-frequency industrial noise.

Frequently Asked Questions

Q: Does the AMM32T S2 require an external power supply to operate?

A: No. The terminal board is a completely passive electrical routing component. It requires no external operating power and draws 0 mA of current from the DCS backplane.

Q: What is the maximum wire size compatible with the M4 terminal screws?

A: The M4 screw terminals accept solid or stranded copper conductors ranging from 0.5 mm squared to 2.5 mm squared (20 AWG to 14 AWG).

Field Installation Guidelines

• Terminal Torque Specifications: Tighten all M4 terminal screws to a torque rating of 1.2 N m. Loose connections can introduce electrical contact resistance, causing signal drifts in analog monitoring loops.
• DIN-Rail Assembly: Mount the terminal board securely to standard 35 mm DIN rails inside the marshalling cabinet. Use end-brackets to lock the assembly laterally against high-vibration operational conditions.
• Grounding and Shielding: Route all field instrument cable shields directly to the designated shield bar on the AMM32T S2. Ensure the terminal board baseplate makes a solid metal-to-metal contact with the system cabinet ground.
• Separation of Signal Cables: Maintain a minimum clearance of 100 mm between the low-voltage analog signal wires connected to the AMM32T S2 and any high-voltage AC power cables running through the cabinet.