Emerson A6824 9199-00090

Description

1. Product Description

2. Product Parameters

Parameter	Specification
Differential Input Impedance	50 kΩ
Dielectric Isolation	Field circuit to logic common: 1000 VAC/DC
Max. Input Withstand Voltage	140 VAC rms or 150 VDC
Max. Usable Input Voltage	200 V peak-to-peak
Max. Off-state Input Voltage	0.2 V peak-to-peak
Input Duty Cycle	20% min., 80% max.
Max. Input DC Offset	150 VDC – 0.5 x max. input voltage (peak-to-peak)
Normal Mode Rejection Maximum	140 VAC or 150 VDC
Module Power	4.8 W typical, 6.25 W maximum
Speed Output Update Rate	5 milliseconds for the 16-bit speed output; update period = pulses/freq (in seconds) for the 32-bit speed output (freq = speed sensor output frequency, pulses = user-specified speed sensor pulse count per 32-bit speed output value update)
Max. Error for 16-bit Speed Output	0.0033% of sensor frequency speed input
Max. Error for 32-bit Speed Output	The greater of 0.0025% or ((25/106)+(1/(24 x 106 x update period))) x 100% of speed sensor frequency input
Compatibility	Compatible with various tachometers and industrial control systems, but not applicable to CE-mark-certified systems

EMERSON A6824

3. Advantages and Characteristics

• High Accuracy: The A6824 9199-00090 has an extremely low error rate for speed measurement. For the 16-bit speed output, the maximum error is only 0.0033% of the sensor frequency speed input. In a large manufacturing plant, when used to monitor the speed of a high-speed conveyor belt, it accurately provided speed data, enabling the plant to maintain a consistent production rate and reduce product defects caused by speed fluctuations.
• Strong Anti-interference: With a dielectric isolation of 1000 VAC/DC and excellent normal mode rejection capabilities, this module can effectively resist external electromagnetic interference. In an electrical substation environment filled with strong electromagnetic fields, it continued to operate stably and accurately measure the speed of motors, demonstrating its robust anti-interference performance.
• Compact Design: Its compact size makes it easy to install in limited spaces within industrial control cabinets. In a retrofit project of a small-scale power generation facility, the A6824 9199-00090 was installed without the need for major modifications to the existing cabinet layout, saving both time and cost.

4. Application Areas and Application Cases

• Application Areas: The A6824 9199-00090 is widely applicable in industries such as manufacturing, power generation, oil and gas, and chemical processing. It is suitable for monitoring and controlling the speed of various rotating equipment like motors, turbines, pumps, and compressors.
• Application Case: In a large oil refinery, the Emerson A6824 9199-00090 was installed to monitor the speed of a crucial gas compressor. By accurately measuring the compressor’s speed, the control system could adjust the operation parameters in real-time to maintain optimal performance. Once, it detected a slight increase in speed that could have led to overloading. Thanks to the timely detection by the A6824 9199-00090, the control system was able to take corrective actions immediately, preventing a potential breakdown and significant production losses.

5. Competitive Comparison

Compared to similar speed detector modules in the market, the Emerson A6824 9199-00090 offers several distinct advantages. It has a higher level of accuracy in speed measurement, with lower error rates for both 16-bit and 32-bit outputs. Its anti-interference capabilities are also more robust, allowing it to perform better in environments with strong electromagnetic interference. Additionally, its compact design provides greater flexibility in installation, which is often a key consideration for industrial users. Some other modules may have larger sizes or less accurate measurement capabilities, making the A6824 9199-00090 a more attractive option for those seeking reliable speed detection solutions.

EMERSON A6824

6. Selection Recommendations

• Compatibility: When selecting the A6824 9199-00090, ensure that it is compatible with the tachometers and control systems you plan to use. Check the input requirements and communication protocols to avoid any compatibility issues that could affect its performance.
• Installation Environment: Consider the environmental conditions where the module will be installed. If it is in an environment with strong electromagnetic interference, ensure that its anti-interference capabilities are sufficient. Also, take into account the available space for installation, as its compact design can be an advantage in limited spaces.
• Budget: While the A6824 9199-00090 offers high performance and reliability, it is important to consider your budget. Compare the costs of different suppliers and evaluate whether the additional features and performance it provides justify the investment. If you have a tight budget, you may need to balance the requirements with the cost, but keep in mind that sacrificing accuracy or reliability could lead to higher long-term costs due to potential equipment failures.

7. Precautions

• Installation: When installing the A6824 9199-00090, follow the installation instructions carefully. Ensure that the power supply is within the specified range and that all connections are secure. Use proper shielding for signal cables to minimize interference.
• Operation: Do not operate the module beyond its rated parameters. Regularly monitor its operation to check for any signs of abnormal behavior, such as excessive power consumption or inaccurate speed readings.
• Maintenance: Periodically clean the module to remove dust and debris that could affect its performance. Check the connections regularly to ensure they are still tight. If any faults are detected, refer to the user manual or contact a professional technician for assistance. Also, note that this module is not suitable for CE-mark-certified systems, so make sure your application does not have such requirements.