Honeywell MC-PLAM02 51304362-150 Low Level Analog Mux Module (LLAMUX)

Product Description

The MC-PLAM02 (51304362-150) is a low-level analog multiplexer I/O module for Honeywell UCN DCS system. It is designed for low millivolt-level signal acquisition, mainly for thermocouple inputs. It has 32 input channels, performs cold junction compensation, signal filtering and multiplexing, and transmits converted data to the UCN controller. It is a legacy card widely used in power, chemical and refinery DCS cabinets as spare replacement part.

Features

• 32 channels low-level analog input, dedicated for thermocouple mV signals
• Built-in cold junction compensation (CJC), open circuit detection per channel
• UCN network communication, plug-in slot installation in Honeywell rack
• On-board signal filtering and noise suppression for weak thermal signals
• Status LED indicators for power, communication and channel fault alarms
• Supports multiple thermocouple types: J, K, E, T, R, S, B
• Hot-swap capable in powered rack without system shutdown
• 51304362-150 is the specific revision code of MC-PLAM02

Application Scenarios

• Thermal power plant boiler, furnace multi-point temperature monitoring
• Petrochemical, refinery and chemical process temperature measurement
• Honeywell UCN DCS system cabinet maintenance and spare parts replacement
• Heat treatment, kiln and incinerator distributed temperature collection
• Retrofit and upgrade of legacy Honeywell TDC3000 / UCN control systems

FAQ

Q: What does MC-PLAM02 stand for?
A: MC-PLAM02 = Low Level Analog Multiplexer Module, short name LLAMUX.

Q: Which DCS system does it belong to?
A: Honeywell UCN / TDC3000 DCS platform.

Q: What signal does it collect?
A: Millivolt thermocouple low-level signals, not standard 4-20mA.

Q: Is this module still in production?
A: TDC3000 UCN series is discontinued, only surplus, refurbished and tested stock available.