AMN33-S2 YOKOGAWA CENTUM VP Datasheet & Technical Manual

Communication Interface Module | YOKOGAWA AMN33-S2

Communication Interface Module | YOKOGAWA AMN33-S2

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YOKOGAWA AMN33-S2 Communication Interface Module Configured for serial communication and protocol conversion in CENTUM CS 1000, CS 3000, and CENTUM...

SKU: AMN33 S2

Manufacturer: Yokogawa
Product No.: AMN33 S2
Product Type: Communication Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 550g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA AMN33-S2 Communication Interface Module

Configured for serial communication and protocol conversion in CENTUM CS 1000, CS 3000, and CENTUM VP platforms, the YOKOGAWA AMN33-S2 (AMN33 Communication Module) provides direct physical/electrical execution.

Hardware Specifications

Parameter	Specification
Model	AMN33-S2
Brand	Yokogawa Electric Corporation
Origin	Japan
Weight	0.55 kg (1.67 lbs)
Dimensions	120 mm x 60 mm x 130 mm
Operating Temp	0 deg C to +55 deg C
Power Consumption	5 VDC via backplane bus
Communication Ports	2 independent redundant ports (RS-232, RS-422, RS-485)
Baud Rate	Up to 115.2 kbps (with auto-detection)
Circuit Protection	Transformer galvanic isolation, built-in surge suppression
Status Indicators	LED array for port activity and communication error status

Process Control & Protocol Conversion Characteristics

Engineers deploy the AMN33-S2 module to establish deterministic data translation between internal DCS backplane buses and external field networks. The module features dual independent serial ports capable of RS-232, RS-422, or RS-485 physical layer configurations to support redundant industrial protocol topologies. Transformer-based galvanic isolation across communication lines isolates internal microprocessors from ground potential shifts, common-mode voltage noise, and field bus surge events. Onboard DIP switch arrays allow direct physical assignment of station network addresses and port modes without requiring auxiliary programming equipment.

Frequently Asked Questions

Q: How does the AMN33-S2 handle physical port switching in redundant network configurations?

A: The module maintains two independent serial channels operating under continuous bus monitoring. If an active channel detects physical loop disruption, signal attenuation, or persistent frame parity errors, system communications seamlessly transition to the secondary redundant channel to prevent data loss.

Q: What mechanisms protect the internal logic circuits from external serial field line transients?

A: Integrated pulse transformers deliver galvanic isolation between serial line terminal connections and backplane logic buses. Passive surge suppression clamping networks absorb high-voltage transients on RS-485/RS-422 differential lines, keeping common-mode voltages within safe operating limits.

Q: How are hardware node addresses and serial line parameters configured on the module?

A: Station addresses, transmission speed settings, and physical interface standards (RS-232, RS-422, or RS-485) are set directly via physical DIP switch arrays mounted on the module body prior to slot insertion and backplane energization.

Field Installation Guidelines

Field technicians must confirm that system power is disconnected or verify hot-swap rack safety compliance prior to mounting the AMN33-S2 into the CENTUM terminal I/O nest or rack chassis. Securely fasten all DIN rail or rack retention screws to maintain a stable earth ground path through the chassis frame. Route serial communication cabling in dedicated metal conduits away from high-voltage AC motor wires and variable frequency drives to minimize inductive coupling. Terminate RS-485 differential signal lines with proper end-of-line termination resistors (typically 120 Ohm) across data pairs to eliminate signal reflection. Maintain proper clearance around enclosure heat sinks to permit natural convection airflow, ensuring operating ambient temperatures stay within 0 deg C to +55 deg C.

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