Products Description
GE MMII-PD-1-2-120 Pulse Input Module in stock
GE MMII-PD-1-2-120 is a high-speed dual-channel pulse input module for GE turbine control and machinery protection systems. It receives pulse signals from magnetic pickup speed probes, performs signal conditioning and noise filtering, and outputs processed frequency and speed data to the main controller for logic calculation.
This module supports 120V rated input, two independent isolated channels, with built-in surge protection and channel self-diagnosis. It is widely deployed in gas turbine, steam turbine overspeed protection and shaft speed monitoring loops, and serves as an important spare part for power plant GE control system maintenance.
Data Parameters
1. Brand: GE
2. Model: MMII-PD-1-2-120
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: 120V 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. Capture pulse signals from magnetic pickups and convert pulses into real-time shaft speed values.
2. Condition weak raw signals and suppress electromagnetic interference to guarantee stable measurement.
3. Support zero-speed detection, overspeed pre-alarm and trip signal transmission for turbine protection.
4. Two independent sampling channels improve the reliability of speed monitoring for critical units.
5. Upload channel status and fault information 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-1-2-120?
A: It is a GE dual-channel pulse input module used for speed signal collection from magnetic pickup probes for turbine overspeed protection.2. Q: Can it work with proximity probes?
A: It is designed for pulse speed signals from magnetic pickups, not for proximity vibration displacement signals.3. Q: Does it support hot swap?
A: It is not recommended for hot swap in non-redundant protection loops; redundant configuration allows online replacement under maintenance procedures.
