Honeywell 2MLF-SOEA Event Input Module
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Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | 2MLF-SOEA |
| Product Name | Event Input Module |
| Product Series | MasterLogic-200 |
| Product Type | Sequence of Events (SOE) Digital Input Module |
| Number of Input Points | 32 Points |
| Input Type | Digital Input, Source/Sink Type |
| Rated Input Voltage | 24 V DC |
| Rated Input Current | Approx. 4 mA per point |
| Operating Voltage Range | 20.4–28.8 V DC |
| Input ON Voltage | 19 V DC or above |
| Input ON Current | 3 mA or above |
| Input OFF Voltage | 11 V DC or below |
| Input OFF Current | 1.7 mA or below |
| Input Resistance | Approx. 5.6 kΩ |
| Event Recording Function | Sequence of Events (SOE) recording |
| Event Recording Resolution | 1 ms |
| Inter-Module Time Error | ±2 ms |
| Event Memory Capacity | 1 Mbit |
| Event Storage Capacity | Up to 300 event records per module |
| Input Filter Setting | 0–100 ms |
| OFF-to-ON Hardware Delay | Approx. 10 μs, excluding filter and CPU scan time |
| ON-to-OFF Hardware Delay | Approx. 84 μs, excluding filter and CPU scan time |
| CPU Scan Time Delay | Approx. 50 μs |
| Clock Synchronization | CPU real-time clock or RS-422 using IRIG-B format |
| Isolation Method | Photocoupler isolation |
| Insulation Resistance | 10 MΩ or above at 500 V DC |
| Withstand Voltage | 560 V AC RMS for 3 cycles |
| Common Connection | 32 points per COM |
| Maximum Current Consumption | 0.7 A |
| Operation Indicator | LED ON when the corresponding input is ON |
| External Connection | 40-pin connector |
| Dimensions | 98 × 27 × 90 mm |
| Weight | 0.2 kg |
FAQ
1. What is the main function of the Honeywell 2MLF-SOEA module?
The 2MLF-SOEA is a Sequence of Events (SOE) input module designed for the Honeywell MasterLogic-200 PLC system. It records changes in external digital input signals with millisecond-level time resolution. It is particularly useful in power generation, transformer protection, and industrial control applications where engineers need to determine the exact order of alarms, trips, and equipment status changes.
2. How many digital input points does the 2MLF-SOEA support?
The module provides 32 digital input points. Each input can monitor an external status signal, such as a circuit breaker position, protection relay contact, equipment alarm, or interlock signal. The recorded events can be reviewed through the dedicated SOE monitoring software.
3. What is the event recording accuracy of the 2MLF-SOEA?
The module records event information with a resolution of 1 ms. The specified time error between modules is ±2 ms. This allows engineers to distinguish events occurring close together and reconstruct the sequence of equipment operations during a system disturbance.
4. How many event records can the module store?
The 2MLF-SOEA has 1 Mbit of built-in event memory and can store up to 300 event records per module. When the recorded events exceed the configured storage capacity, the SOE history settings determine whether older records are replaced or the initial event history is retained.
5. What input voltage and signal thresholds does the 2MLF-SOEA support?
The module uses a rated input voltage of 24 V DC and operates within a range of 20.4–28.8 V DC. An input is recognized as ON at 19 V DC or above, with an input current of at least 3 mA. An input is recognized as OFF at 11 V DC or below, with a current of 1.7 mA or less. These thresholds should be considered when connecting field contacts and external control signals.
6. Can the input filter time be adjusted?
Yes. The input filter can be configured from 0 to 100 ms. This setting helps prevent electrical noise or contact bounce from being recorded as valid events. For applications requiring precise event timing, the filter should be set carefully because a longer filtering period can delay event recognition.
7. How can the 2MLF-SOEA synchronize event timestamps?
The module supports clock synchronization through the CPU real-time clock or an RS-422 interface using the IRIG-B format. Proper synchronization is important when multiple SOE modules are installed in the same system, particularly when engineers need to compare event timestamps across different equipment or protection circuits.
8. What should be checked when replacing or commissioning a 2MLF-SOEA?
First, confirm that the replacement module is the correct model and is compatible with the MasterLogic-200 PLC system. Check the 40-pin connector, 24 V DC input supply, common connections, and all 32 input signals. Then verify the SOE configuration, input filter settings, event history options, and clock synchronization method. Finally, simulate selected input changes and confirm that the module records the correct event status and timestamps through the SOE monitoring software.
Honeywell 2MLF-SOEA Event Input Module is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
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