Description

Yokogawa AMN31 Annunciator Module

The Yokogawa AMN31 (base model AMN31) serves as the primary annunciator module utilized to execute visual and audible alarm signaling across CENTUM VP and ProSafe-RS platforms.

Hardware Specifications

Parameter	Specification
Model Brand	Yokogawa AMN31
Origin	Japan
Weight	1.5 kg
Dimensions	144 mm (W) × 144 mm (H) × 150 mm (D)
Operating Temp	0 to 50 degC
Storage Temp	-20 to 70 degC
Humidity	10% to 90% non-condensing
Power Consumption	24 VDC supply
Display	High-resolution color display
Alarm Types	Visual and audible
Alarm Priorities	Multiple levels
Customization	Configurable alarm messages and settings
System Compatibility	CENTUM VP, ProSafe-RS

DCS Process Control Features

Supports process control and DCS instrument integration: The AMN31 maintains channel-to-channel isolation to prevent signal interference between simultaneous alarms. Compatible with 4-20 mA HART loops, the module ensures consistent alarm propagation and monitoring across networked DCS instruments. Cold junction compensation (CJC) is integrated for accurate thermocouple signal display.

Frequently Asked Questions

Q: VnA: Does the AMN31 support hot-swap of internal components?
A: No, the AMN31 annunciator module does not support hot-swap. All maintenance should be performed with power isolated.

Q: VnA: Can the module operate with both CENTUM VP and ProSafe-RS networks simultaneously?
A: The AMN31 can interface with either system individually. It cannot bridge simultaneous communications between both DCS networks.

Q: VnA: How are alarm priorities configured?
A: Alarm priorities are set via the system engineering tool and stored in the module’s internal memory. Physical panel adjustments are not supported.

Field Installation Guidelines

• Mount module on a flat surface or panel with adequate ventilation around all sides.
• Connect 24 VDC power supply via approved industrial wiring practices. Ensure correct polarity.
• Maintain separation between signal wiring and high-voltage AC lines to reduce EMI.
• Ground shielded alarm cables to a single reference point at the control panel to prevent ground loops.
• Verify environmental conditions: operating temp 0-50 degC, humidity 10-90% non-condensing.
• Confirm alarm message configuration through the DCS engineering workstation before final commissioning.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems