Overview
The EPRO A6312/06 is a two-channel transducer input module designed to process signals from eddy current and differential sensors. It provides independent inputs, adjustable measuring ranges, buffered sensor power, and front-panel status indicators for each channel. Two buffered voltage outputs allow access to conditioned input signals, while an RS-232 configuration interface supports parameter setup and status monitoring.
Key Features
- Two independent transducer inputs for eddy current and differential sensors.
- Galvanic isolation between the input circuits and the power supply.
- Continuously adjustable measuring range through configuration software.
- Separate buffered sensor power supply with open-circuit and short-circuit protection.
- Independent channel status indication, including OK, alert, and danger LEDs.
- Two buffered voltage outputs for monitoring input signals.
- Password-protected configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | A6312/06 |
| Brand | EPRO |
| Product Type | Speed Key Module |
| Number of Inputs | 2, independent |
| Input Type | Eddy current, differential |
| Listed Sensor Part Numbers | Emerson 6422, 6423, 6424, 6425 |
| Input Isolation | Galvanically separated from power supply |
| Input Resistance | Greater than 100 kOhm |
| Input Voltage Range | 0 to +/-27.3 VDC |
| Input Frequency Range | 0-20,000 Hz |
| Listed Speed Value | 65,535 RPM |
| Measuring Range Adjustment | Continuously adjustable via configuration software |
| Smallest Measuring Range | 2 V |
| Largest Measuring Range | 0-30 V |
| Sensor Power Supply | Separate buffered supply, galvanically isolated from system voltages and system supply |
| Sensor Supply Nominal Voltage | -26.75 VDC |
| Sensor Supply Current | 20 mA nominal, 35 mA maximum |
| Sensor Supply Protection | Open-circuit and short-circuit protected |
| Front-Panel OK Indicators | 2 green LEDs, one per channel |
| Front-Panel Alert and Danger Indicators | 4 yellow LEDs, indicating alert and danger separately for each channel |
| Buffered Outputs | 2 |
| Buffered Output Voltage | +/-10 V |
| Output Signal Scaling | Input signal level reduced by a factor of 0.15 |
| Output Load Resistance | Greater than 100 kOhm |
| Output Frequency Range | 0 Hz to 16 kHz at -3 dB |
| Configuration Interface | Mini-DIN socket, RS-232 |
| Configuration Functions | Parameter configuration and status monitoring |
| Configuration Security | Password protected |
| Module Protection Rating | IP 00, DIN 40050 |
| Front Plate Protection Rating | IP 21, DIN 40050 |
| Climate Classification | DIN 40040, class KTF |
| Operating Temperature | 0 to 65 deg C (32 to 149 deg F) |
| Storage Temperature | -30 to 85 deg C (-22 to 185 deg F) |
| Relative Humidity | 5-95%, non-condensing |
| Vibration | IEC 68-2, Part 6; 0.15 mm at 10-55 Hz; 19.6 mm/s2 at 55-150 Hz |
| Shock | IEC 68-2, Part 29; 98 m/s2 peak, 16 ms |
| EMC Resistance | EN 50081-1 / EN 50082-2 |
| Maximum Power Consumption | 6 W |
| Current Consumption at 24 VDC | 250 mA |
| Dimensions | 3.1 x 19 x 12.8 cm |
| Weight | 0.26 kg |
Signal Processing and Monitoring
The two independent input channels accept signals from eddy current and differential transducers. The configuration software allows adjustment of the measuring range to suit the required signal level. The specified input frequency range supports signal measurement up to 20 kHz, subject to the configured measurement range and system requirements.
Sensor Supply and Buffered Outputs
The module provides a separate buffered sensor supply rated at -26.75 VDC, with a nominal current of 20 mA and a maximum of 35 mA. The supply includes open-circuit and short-circuit protection and remains galvanically isolated from system voltages.
Two buffered outputs provide access to the input signals at a reduced level. Each output has a nominal range of +/-10 V, an input scaling factor of 0.15, and a specified frequency response up to 16 kHz at -3 dB. The load resistance must exceed 100 kOhm.
Configuration and Front-Panel Diagnostics
The Mini-DIN configuration socket provides an RS-232 interface for parameter setup and status monitoring. Password protection restricts access to configuration settings. On the front panel, two green LEDs indicate channel OK status, while four yellow LEDs indicate alert and danger conditions separately for the two channels.
Environmental and Mechanical Conditions
The module operates at temperatures from 0 to 65 deg C and can be stored from -30 to 85 deg C. Relative humidity must remain between 5% and 95% without condensation. The module and front plate have different protection ratings: IP 00 for the module and IP 21 for the front plate.
Frequently Asked Questions
Q: How many transducer channels does the EPRO A6312/06 support?
A: It supports two independent transducer inputs. Each channel has separate OK, alert, and danger status indication.
Q: Which sensor types are specified for the A6312/06?
A: The specified input types are eddy current and differential. The listed sensor part numbers are Emerson 6422, 6423, 6424, and 6425. Confirm the exact sensor configuration before replacement or commissioning.
Q: How can the module be configured and monitored?
A: The module uses a Mini-DIN socket with an RS-232 interface for configuration and status monitoring. Configuration is password protected.
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