Products Description
GE MMII-PD-1-2-240 Dual Channel Pulse Input Module in stock
GE MMII-PD-1-2-240 is a high-performance dual-channel pulse input module for GE turbine and rotating machinery protection systems. It acquires pulse signals from magnetic pickup speed probes, carries out signal conditioning and noise filtering, and transmits processed speed and frequency data to the main controller for protection logic calculation.
This 240V rated version has two galvanically isolated channels with built-in surge suppression and continuous channel diagnostics. It is widely applied in gas turbine, steam turbine overspeed protection and shaft speed monitoring loops, and serves as a key spare for power plant GE legacy control cabinet maintenance.
Data Parameters
1. Brand: GE
2. Model: MMII-PD-1-2-240
3. Product Type: Dual Channel Pulse Input Module
4. Application: Turbine shaft speed monitoring and overspeed protection system
5. Feature: 2 isolated channels, pulse/frequency acquisition, surge filtering, fault diagnosis
6. Characteristic: Rack mount design, status LED indicator, compact structure
7. Input Specification: 240V pulse signal input
8. Matching Sensor: Magnetic pickup speed probes
9. Mounting: Standard industrial rack slot installation
10. Operating Temperature: -20℃ ~ +70℃
Core Functions
1. Receive pulse signals from magnetic pickups and convert pulse trains into real-time shaft speed values.
2. Condition raw signals and suppress electromagnetic interference to ensure stable speed measurement.
3. Support zero-speed detection, overspeed pre-alarm and trip signal output for turbine protection.
4. Dual independent sampling channels improve monitoring reliability for critical rotating equipment.
5. Upload channel status and fault codes to the GE main control system for alarm logging.
Application Scenarios
1. Gas turbine and steam turbine shaft speed monitoring cabinet.
2. Independent overspeed protection and emergency trip system.
3. Generator set speed measuring and interlock control rack.
4. Compressor and other rotating machinery frequency monitoring system.
5. GE legacy turbine control system spare replacement and retrofit.
FAQ
1. Q: What is GE MMII-PD-1-2-240?
A: It is a GE dual-channel pulse input module with 240V rating, used for magnetic pickup speed signal collection for turbine overspeed protection.2. Q: What is the difference between MMII-PD-1-2-120 and MMII-PD-1-2-240?
A: Same function and channel quantity, different rated input voltage: 120V vs 240V, cannot be directly interchanged.3. Q: Can it be used for proximity vibration probes?
A: No, it is designed for pulse speed signals, not vibration displacement signals.
