A6125| Emerson Epro |Case Seismic Vibration Monitor
Description
The A6125 Case Piezoelectric Vibration Monitor is designed for high-reliability monitoring of critical rotating machinery, using piezoelectric accelerometer sensors. It is part of the Emerson CSI 6500 series, forming a complete API 670 machinery protection system. Suitable for steam turbines, gas turbines, compressors, and hydro-turbomachinery, it accurately monitors case vibration and triggers alarms based on predefined setpoints.
Features
- High reliability for critical machinery
- Compatible with piezoelectric accelerometers and velometers
- Integrates with PlantWeb® and AMS Suite for advanced diagnostics
- Real-time monitoring and alarm functions
Technical Specifications
-
Transducer Inputs
- Number of Inputs: 2, independent, differential inputs
- Type of Inputs: Piezoelectric (accelerometer or velometer)
- Input Resistance: >100 kΩ
- Input Voltage Range: -5 to +15 VDC
- Signal Input Voltage Range (6125/00): 311 - 9500 mV peak to peak
- Signal Input Voltage Range (6125/10): 16 - 450 mV peak to peak (special high-temperature sensor)
- Input Frequency Range (Accelerometer): High: 30 - 8000 Hz; Med: 10 - 2000 Hz; Low: 6 - 1000 Hz
- Input Frequency Range (Velometer): High: 10 - 2000 Hz; Med: 6 - 1500 Hz; Low: 2 - 250 Hz
- Sensor Supply: Accelerometer, constant current, 2 - 8 mA, 30 VDC
-
Configurable Parameters
- Measuring Range
- RMS or zero to peak
- Sensitivity
- Alert and Danger setpoints
- Filter frequency ranges
-
Sensor Power Supply
- Separate buffered sensor supply
- Galvanically separated from system voltages and supply voltage
- Open and short circuit proof
-
Front Panel Outputs
- Green LEDs: Two LEDs indicate channel OK for each channel
- Red LEDs: Four LEDs indicate alert and danger for each channel
- Front Panel Buffered Outputs: Two, identical to transducer sensor inputs; ±12 V, >100 kΩ load, frequency range 0.1 - 0.075 Hz to 10 kHz (-3 dB ±20%)
- Mini DIN Configuration Socket: RS-232 for configuration and status monitoring
-
Analysis
- Measurement Modes: Hot configurable, independent dual-channel
- Accelerometer Sensor: 30 - 8 kHz, g’s; 10 - 2 kHz, g’s or velocity; 6 - 1 kHz, g’s or velocity
- Velocity Sensor: 10 - 2.0 kHz, velocity or displacement; 6 - 1.5 kHz, velocity or displacement; 2 - 250 Hz, velocity or displacement
- Analysis Parameters: ½x, 1 - 10x and phase angle of same; Available via ModBus TCP/IP output
-
Rear Outputs
- Mode Current Outputs: 0/4-20 mA output for each channel, proportional to main value; Open/short circuit proof; Permissible Load <500 Ω; Accuracy ±1% of full scale; Settling Time 0 - 10 seconds
- Mode Voltage Outputs: 0 - 10 VDC output for each channel, proportional to main value; Open/short circuit proof
- Rear Buffered Outputs: 0 - 10 VDC output for each channel, proportional to main value; Open/short circuit proof; Frequency Range 0.075 Hz - 13 kHz (-3 dB ±20%); Permissible Load >100 kΩ
-
Alarm Setpoints
- Alert: Selectable normally open/closed; Delay 0 - 5 seconds/channel; 0 - 36 seconds with A6740 relay card; Adjustable range 5 - 100% of full scale; Resolution 1% of full scale; Hysteresis 0 - 20% of full scale
- Danger: Similar to Alert with additional features as specified
-
Self-Checking
- Power supply, sensor, cable, module checking, overload, internal temperature, system watchdog
- Green LED: Off when not OK; Flashes during delay time; Reason for not OK can be read from communication bus
-
Environmental and General
- Module IP Rating: IP 00, DIN 40050
- Front Plate IP Rating: IP 21, DIN 40050
- Climate Class: DIN 40040 class KTF
- Operating Temperature: 0° - 65°C (32° - 149°F)
- Storage Temperature: -30° - 85°C (-22° - 185°F)
- Relative Humidity: 5 - 95%, non-condensing
- Vibration: IEC 68-2, part 6; 0.15 mm, 10 - 55 Hz; 19.6 mm/s², 55 - 150 Hz
- Shock: IEC 68-2, part 29; 98 m/s² peak, 16 ms
- EMC Resistance: EN50081-1 / EN50082-2
- Power Consumption: Max. 6 W, 250 mA at 24 VDC
-
Physical Dimensions
- PCB/EURO card format according to DIN 41494
- Width: 30.0 mm (1.181 in) (6 TE)
- Height: 128.4 mm (5.055 in) (3 HE)
- Length: 160.0 mm (6.300 in)
- Net Weight: Approx. 320 g (0.705 lbs)
- Gross Weight: Approx. 450 g (0.992 lbs) including standard packing
- Packing Volume: Approx. 2.5 dm³ (0.08 ft³)
- Space Requirements: 1 slot; 14 modules fit into each 19” rack
A6125| Emerson Epro |Case Seismic Vibration Monitor
A6125| Emerson Epro |Case Seismic Vibration Monitor
Description
The A6125 Case Piezoelectric Vibration Monitor is designed for high-reliability monitoring of critical rotating machinery, using piezoelectric accelerometer sensors. It is part of the Emerson CSI 6500 series, forming a complete API 670 machinery protection system. Suitable for steam turbines, gas turbines, compressors, and hydro-turbomachinery, it accurately monitors case vibration and triggers alarms based on predefined setpoints.
Features
- High reliability for critical machinery
- Compatible with piezoelectric accelerometers and velometers
- Integrates with PlantWeb® and AMS Suite for advanced diagnostics
- Real-time monitoring and alarm functions
Technical Specifications
-
Transducer Inputs
- Number of Inputs: 2, independent, differential inputs
- Type of Inputs: Piezoelectric (accelerometer or velometer)
- Input Resistance: >100 kΩ
- Input Voltage Range: -5 to +15 VDC
- Signal Input Voltage Range (6125/00): 311 - 9500 mV peak to peak
- Signal Input Voltage Range (6125/10): 16 - 450 mV peak to peak (special high-temperature sensor)
- Input Frequency Range (Accelerometer): High: 30 - 8000 Hz; Med: 10 - 2000 Hz; Low: 6 - 1000 Hz
- Input Frequency Range (Velometer): High: 10 - 2000 Hz; Med: 6 - 1500 Hz; Low: 2 - 250 Hz
- Sensor Supply: Accelerometer, constant current, 2 - 8 mA, 30 VDC
-
Configurable Parameters
- Measuring Range
- RMS or zero to peak
- Sensitivity
- Alert and Danger setpoints
- Filter frequency ranges
-
Sensor Power Supply
- Separate buffered sensor supply
- Galvanically separated from system voltages and supply voltage
- Open and short circuit proof
-
Front Panel Outputs
- Green LEDs: Two LEDs indicate channel OK for each channel
- Red LEDs: Four LEDs indicate alert and danger for each channel
- Front Panel Buffered Outputs: Two, identical to transducer sensor inputs; ±12 V, >100 kΩ load, frequency range 0.1 - 0.075 Hz to 10 kHz (-3 dB ±20%)
- Mini DIN Configuration Socket: RS-232 for configuration and status monitoring
-
Analysis
- Measurement Modes: Hot configurable, independent dual-channel
- Accelerometer Sensor: 30 - 8 kHz, g’s; 10 - 2 kHz, g’s or velocity; 6 - 1 kHz, g’s or velocity
- Velocity Sensor: 10 - 2.0 kHz, velocity or displacement; 6 - 1.5 kHz, velocity or displacement; 2 - 250 Hz, velocity or displacement
- Analysis Parameters: ½x, 1 - 10x and phase angle of same; Available via ModBus TCP/IP output
-
Rear Outputs
- Mode Current Outputs: 0/4-20 mA output for each channel, proportional to main value; Open/short circuit proof; Permissible Load <500 Ω; Accuracy ±1% of full scale; Settling Time 0 - 10 seconds
- Mode Voltage Outputs: 0 - 10 VDC output for each channel, proportional to main value; Open/short circuit proof
- Rear Buffered Outputs: 0 - 10 VDC output for each channel, proportional to main value; Open/short circuit proof; Frequency Range 0.075 Hz - 13 kHz (-3 dB ±20%); Permissible Load >100 kΩ
-
Alarm Setpoints
- Alert: Selectable normally open/closed; Delay 0 - 5 seconds/channel; 0 - 36 seconds with A6740 relay card; Adjustable range 5 - 100% of full scale; Resolution 1% of full scale; Hysteresis 0 - 20% of full scale
- Danger: Similar to Alert with additional features as specified
-
Self-Checking
- Power supply, sensor, cable, module checking, overload, internal temperature, system watchdog
- Green LED: Off when not OK; Flashes during delay time; Reason for not OK can be read from communication bus
-
Environmental and General
- Module IP Rating: IP 00, DIN 40050
- Front Plate IP Rating: IP 21, DIN 40050
- Climate Class: DIN 40040 class KTF
- Operating Temperature: 0° - 65°C (32° - 149°F)
- Storage Temperature: -30° - 85°C (-22° - 185°F)
- Relative Humidity: 5 - 95%, non-condensing
- Vibration: IEC 68-2, part 6; 0.15 mm, 10 - 55 Hz; 19.6 mm/s², 55 - 150 Hz
- Shock: IEC 68-2, part 29; 98 m/s² peak, 16 ms
- EMC Resistance: EN50081-1 / EN50082-2
- Power Consumption: Max. 6 W, 250 mA at 24 VDC
-
Physical Dimensions
- PCB/EURO card format according to DIN 41494
- Width: 30.0 mm (1.181 in) (6 TE)
- Height: 128.4 mm (5.055 in) (3 HE)
- Length: 160.0 mm (6.300 in)
- Net Weight: Approx. 320 g (0.705 lbs)
- Gross Weight: Approx. 450 g (0.992 lbs) including standard packing
- Packing Volume: Approx. 2.5 dm³ (0.08 ft³)
- Space Requirements: 1 slot; 14 modules fit into each 19” rack