Honeywell MP-M3AM31 Programmable Logic Controller
Honeywell MP-M3AM31 Programmable Logic Controller
Configured for analog input acquisition in Honeywell PLC/DCS systems, the Honeywell MP-M3AM31 (MP-M3AM31 analog input module) provides direct physical execution of milliampere and voltage signal measurement, while also being cross-listed for integration into addressable fire control panel assemblies.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MP-M3AM31 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 1 kg (module) / 22.7 kg (panel) |
| Dimensions | 200 x 200 mm (module) / 406 x 356 x 203 mm (panel) |
| Operating Temp | -20 deg C to +60 deg C (module) / -40 deg C to +70 deg C (panel) |
| Power Consumption | 2.5 W (module) / 24 VDC supply with battery backup up to 24 AH (panel) |
| Channel Count | 3 analog inputs (module) |
| Input Resolution | 16-bit |
| Isolation Voltage | 1500 VAC |
| System Capacity | Up to 31 zones, 256 devices (panel) |
4-20 mA HART Loop Protocol
In PLC/DCS applications, the MP-M3AM31 supports milliampere and voltage input scaling with 16-bit resolution. Channel-to-channel isolation at 1500 VAC ensures stable measurement across independent inputs. When deployed in fire alarm assemblies, the module interfaces with addressable devices through 24 VDC supply lines, maintaining deterministic communication and supporting battery-backed redundancy.
Frequently Asked Questions
Q: Can the MP-M3AM31 be hot-swapped in a Honeywell PLC rack? A: No, power isolation is required before removal or insertion to avoid bus disruption.
Q: How does redundancy apply in fire alarm panel assemblies? A: Redundancy is achieved through battery backup and zone/device distribution; module-level redundancy is not provided.
Q: Is firmware upgrade supported? A: The module operates with fixed firmware; configuration is hardware-based and not field-upgradable.
Field Installation Guidelines
- For PLC/DCS use, mount the module in the designated chassis slot with proper grounding.
- Maintain shielded cable grounding at a single point to minimize interference.
- For fire alarm assemblies, ensure enclosure mounting is secure and ventilation is adequate.
- Observe separation between signal wiring and high-voltage lines.
- Verify polarity when connecting 24 VDC supply and battery backup.
Honeywell MP-M3AM31 Programmable Logic Controller
