EPRO MMS6312 Speed Keyphase Monitoring Module

Technical Specifications

Model:MMS6312

Brand:EPRO(Emerson)

Series:MMS6000 TSI system

Power supply:18~31.2VDC,redundant power input

Input:2 independent channels,support PR9376 hall sensor or eddy current probe

Frequency range:0~20kHz

Analog output:2×isolated 4~20mA,16-bit resolution,accuracy ±1%FS

Pulse output:2×TTL 0~5V square wave pulse

Relay alarm:2 groups of alarm relay,configurable warning and danger threshold

Communication:RS485 Modbus RTU

Mounting:19 inch rack 3U card

Operating temperature:-20~+60℃

Dimensions:263mm ×30mm ×220mm

Weight:0.45kg

Certification:CE

System compatibility:Belongs to MMS6000 TSI monitoring system,matched with PR9376 series hall speed probe,used for steam turbine,compressor and generator shaft rotating speed and key phase signal acquisition and overspeed protection.

Function:Dual-channel independent speed measurement,collect pulse signal from speed probe.Calculate shaft rotating speed,provide key phase reference signal for vibration analysis.4-20mA analog signal upload speed value to DCS,TTL pulse output for upper system.Trigger relay alarm when exceeding preset overspeed threshold.

Installation:Install in MMS6000 19-inch rack,connect rear 48-pin terminal for power,sensor signal and analog output,front SMB test port for signal inspection.

Interface:

‑2×sensor signal input terminals

‑2×4~20mA analog output

‑2×TTL pulse output

‑Alarm relay terminals

‑RS485 Modbus bus

‑48 pin rear connector

Circuit feature:Built-in high-speed pulse acquisition chip,continuous self-diagnosis,detect sensor open circuit and short circuit fault.

Feature:EPRO MMS6000 dedicated dual channel speed/keyphase module,support speed monitoring,key phase collection and overspeed alarm. High measurement accuracy. Common faults:channel damage,RS485 communication failure,relay failure. Confirm full model before replacement.

Diagnostic:Module fault leads to loss of rotating speed or key phase signal,trigger TSI speed alarm and affect turbine overspeed protection logic.

Built‑in function

MMS6312 realizes rotating speed measurement,key phase signal processing and overspeed alarm interlock,widely used for power plant turbine TSI spare replacement.

Product Brief

MMS6312 belongs to EPRO MMS6000 TSI system spare parts family,dual channel speed and keyphase monitoring rack card. It matches PR9376 hall probe to collect shaft speed and keyphase signal. Verify sensor and rack system compatibility before ordering. Check pulse input,analog output and relay function during commissioning. Widely applied for steam turbine,compressor and generator condition monitoring. ESD anti‑static protection shall be followed during installation.