Overview
The Emerson EPRO CON021/916-200, also cataloged as the CON021 Eddy Current Signal Converter, operates as a dedicated hardware component for converting eddy current probe signals into proportional electrical outputs within EPRO machinery monitoring systems. It processes displacement and vibration measurement signals from compatible PR642x sensor probes.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CON021/916-200 |
| Brand | Emerson / EPRO |
| Device Type | Eddy Current Signal Converter / Preamplifier |
| Origin | Germany |
| Weight | Approx. 120 g |
| Dimensions | Approx. 86 mm x 56 mm x 38.5 mm |
| Operating Temp | -30 deg C to +100 deg C |
| Power Consumption | Approx. supplied by -23 V to -32 V DC supply range |
| Input Compatibility | EPRO Eddy Current Sensors, including PR6422, PR6423, PR6424, PR6425, PR6426 series |
| Output Signal | DC voltage with superimposed AC vibration signal |
| Linear Output Voltage Range | -4 V to -20 V at -24 V supply |
| Maximum Output Voltage Range | -1 V to -22 V |
| Frequency Range (-3 dB) | 0 Hz to 20,000 Hz |
| Response Time | Less than 15 microseconds |
| Protection Functions | Short-circuit protection, open-circuit protection, reverse polarity protection |
| Sensor Connection | LEMO plug connection |
| Terminal Connection | Screw terminals for power supply and signal output |
| Protection Class | IP20 |
Process Monitoring and Eddy Current Signal Conditioning
The CON021 converter receives high-frequency eddy current signals from EPRO PR642x proximity probes and converts them into a conditioned voltage output. The output contains a DC component related to probe gap position and an AC component representing dynamic shaft movement.
The converter supports rotor displacement measurement circuits where probe scaling, signal linearity, and gap voltage behavior must remain within the configured measurement range. The signal chain requires correct probe-converter matching to maintain measurement accuracy during vibration and position monitoring.
Frequently Asked Questions
Q: What type of sensor input is supported by the CON021/916-200?
A: The CON021/916-200 is designed for EPRO eddy current sensor systems, including compatible PR642x series proximity probes.
Q: What electrical output does the converter provide?
A: The converter provides a DC voltage output with a superimposed AC vibration signal for connection to monitoring or protection systems.
Q: Does the CON021/916-200 include signal protection functions?
A: Yes. The unit includes protection against short circuits, open circuits, and reverse polarity conditions.
Field Installation Guidelines
Install the CON021 converter in a suitable control cabinet environment with protection against excessive moisture, dust, and mechanical impact.
Connect the eddy current probe using the specified LEMO connector and maintain proper cable routing between the probe and converter. Keep sensor cables separated from high-current power wiring to reduce electromagnetic interference.
Verify power supply polarity before energizing the module. Confirm the probe type and converter configuration match before commissioning the measurement loop. Connect the output signal wiring using appropriate shielding practices and terminate cable shields according to the system grounding design.
Check the output voltage behavior after installation to confirm correct probe gap operation and stable vibration signal transmission.
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