Overview
The Emerson EPRO CON021/916-120, also cataloged as the CON021/916-120 Signal Converter, operates as a dedicated hardware component for converting eddy current probe electromagnetic signals into proportional vibration and displacement outputs within EPRO machinery monitoring systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CON021/916-120 |
| Brand | Emerson EPRO |
| Origin | Germany |
| Operating Temp | -30 deg C to +100 deg C |
| Power Consumption | Not specified in available technical data |
| Input Compatibility | EPRO eddy current sensor probes including PR6423, PR6424, and PR6426 series |
| Supply Voltage Range | -23 VDC to -32 VDC |
| Output Signals | Proportional DC output and buffered AC vibration signal output |
| Frequency Response | 0 Hz to 10 kHz (-3 dB) |
| Mounting Type | DIN-rail or panel mounting configuration |
| Protection Design | Control cabinet installation design with field enclosure options |
EPRO Eddy Current Signal Conversion Characteristics
The CON021/916-120 processes the high-frequency excitation signal from an EPRO proximity probe and converts the measured eddy current response into electrical signals representing shaft displacement and vibration parameters. The converter maintains the measurement chain between the sensor probe, machinery monitoring hardware, and automation control interfaces.
The measurement circuit requires correct probe matching, cable configuration, and signal reference conditions to maintain the intended eddy current scaling characteristics. Installation verification includes checking probe connection integrity, signal polarity, and gap voltage behavior before machinery operation.
For EPRO machinery protection applications, the converter supports buffered AC signal access for vibration waveform analysis. The output path allows diagnostic instruments to evaluate dynamic vibration components without interrupting the primary monitoring loop.
Frequently Asked Questions
Q: Which sensor probes can be connected to the CON021/916-120?
A: The converter is designed for EPRO eddy current sensor systems and is compatible with PR642x series proximity probes when configured according to the matching measurement system requirements.
Q: Does the CON021/916-120 provide both vibration and displacement outputs?
A: The unit converts probe signals into proportional electrical outputs used for displacement and vibration monitoring. Output configuration depends on the connected monitoring system and selected measurement channel arrangement.
Q: What installation factors affect eddy current measurement accuracy?
A: Probe mounting position, extension cable routing, electrical shielding, grounding method, and correct probe-to-converter matching affect measurement signal quality.
Field Installation Guidelines
Install the CON021/916-120 in a suitable control cabinet environment with appropriate separation from high-power switching equipment and sources of electromagnetic interference.
Use shielded signal wiring for probe connections and maintain proper cable routing between the proximity probe, converter, and monitoring system. Connect cable shields according to the machinery protection system grounding practice to reduce unwanted signal coupling.
Before commissioning, verify the probe connection, supply voltage polarity, output wiring, and signal response under controlled operating conditions. Confirm that the connected monitoring equipment receives the expected vibration or displacement signal range before placing the machinery protection loop into service.
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