Issue Can the MF41-6043 actuator be wired to and controlled by a DMS MicroSmart MSC-V-511 controller when replacing a defective actuator? Product Line TAC IA Series, Field Devices Environment DMS MSC-V-511 MF41-6043 Cause The original actuator is defective and discontinued, making it impossible to replace with an identical unit. Resolution The MSC-V-511 controller can control the MF41-6043 actuator using its triac outputs. Terminals D1 to D4 on the MSC-V-511 provide 24 Vac, which matches the actuator’s voltage requirement. No external power source is needed because the MSC-V-511 supplies 24 Vac power. Wiring and programming details: Refer to MSC-V-511 Installation Guide (F-25710), page 18. Refer to MF41-6043 Installation Guide (F-26736), page 6 for wiring diagrams. Power considerations: Actuator requires 2.3 VA. MSC-V-511 digital outputs can supply up to 12 VA.

Issue Users need specifications, setup details, and documentation for EH Series Humidity Sensors. Product Line  Field Devices Environment EH Series Humidity sensors Cause  Lack of readily available technical details and installation guidance for EH Series sensors. Resolution Refer to the following resources for complete specifications and installation instructions: EH Series Specification Sheet EH Series Humidity Sensor Installation and Operation Instructions Legacy EH Series Installation Guide (for models with two dip switch sets) Key Specifications: Power Supply: +15 to 36 VDC or 24 VAC Output Options (Field-selectable): 4–20 mA, 0–5 VDC, 0–10 VDC Measurement Range: 0–100% RH Accuracy: ±2% RH (model dependent) Operating Temperature: -40°C to +70°C Applications: HVAC systems, clean rooms, humidity-controlled environments. Additional Notes: Ensure correct dip switch settings for output signal selection. For legacy models, use the “Old EH Series” guide.

Issue The official documentation lacks clarity on how the EPU305LCD behaves in bi-directional mode, especially compared to unidirectional mode, and how reverse flow is interpreted. Product Line Field Devices. Environment EPU305LCD. Cause The confusion arises due to: Limited explanation in datasheets regarding how pressure differentials are calculated and displayed in bi-directional mode. Misinterpretation of analog output scaling, especially when switching between modes. Assumption that reverse flow is directly measured, whereas the sensor only calculates differential pressure between its ports. BMS misconfiguration, where systems expect unidirectional scaling and misinterpret negative values. Resolution Key Differences Between Modes Mode Display Range Behavior Unidirectional 0 to 50 Pa Only positive pressure differences are displayed. Bi-directional -50 to +50 Pa Displays both positive and negative pressure differences.   Note: The EPU305LCD does not directly measure reverse flow. It calculates the pressure differential between the positive and negative ports. Example Calculation Positive Port: 10 Pa Negative Port: 15 Pa Bi-directional Mode Result: -5 Pa Unidirectional Mode Result: 0 Pa (negative values are suppressed) Display Behavior When DIP switch 3 is enabled for bi-directional mode: Display shows “SEL -50” to indicate the selected range. Briefly shows “SET” when a new range is selected. Analog Output Ranges Configuration Analog Output Unidirectional Range Bi-directional Range 3-Wire 0–10 V / 0–5 V 0 to 50 Pa -50 to +50 Pa 2-Wire 4–20 mA 0 to 50 Pa -50 to +50 Pa   All ranges are configurable for either mode. Lower ranges are ideal for detecting small pressure differences. Higher ranges suit larger pressure measurements. Application Notes   Use bi-directional mode when monitoring both positive and negative pressure differentials is required. When switching modes, SCADA systems may show different readings due to scale changes—this is expected and normal.

Issue How do you configure VisiSat to communicate with MicroNet or IAC controllers using a port-powered RS-232 to RS-485 converter? Product Line Field Devices, Satchwell MicroNet Environment Satchwell VisiSat Any port-powered RS-232 to RS-485 converter Cause Proper configuration of the RS-232 to RS-485 converter is required to establish communication between VisiSat and field controllers. Resolution Port-powered RS-232 to RS-485 converters such as the LIB-4-485 allow serial communication between a PC and RS-485-based controllers without requiring an external power supply. Power Requirements Powered directly from the PC’s RS-232 port. Ensure the PC’s serial port complies with RS-232 voltage specifications. Most modern PCs (e.g., Dell) are compatible, but some laptops or USB-to-serial adapters may not supply sufficient power. Wiring Guidelines TD (A) → Connect to negative (-) terminal of the controller. TD (B) → Connect to positive (+) terminal of the controller. GND → Connect the shield/screen only at the converter end, not at the controller. ⚠️ Always refer to the converter’s datasheet for pinout and wiring specifics. VisiSat Server Configuration Open the VisiSat Server Client from the system tray. Go to Network Menu → Settings. In the Configure Network Settings window: Set Transport Type to Serial Port Click Configure Serial Port Settings Choose the appropriate configuration based on the controller type: MicroNet Controllers: Use the following MicroNet-specific settings. IAC Controllers: Use the following IAC-specific settings. Click OK to apply settings. VisiSat is now ready to communicate with the controller via the RS-485 converter. Additional Notes The VisiSat Engineering Guide contains additional information regarding the VisiSat server. If using a USB-to-serial adapter, ensure it supports port-powered converters. For long cable runs, consider using isolated converters to prevent ground loops.

Issue Building Management System (BMS) equipment may malfunction due to electromagnetic interference (EMI) from nearby electrical devices. Diagnosing and resolving such issues can be complex and costly, making preventive installation practices essential. Product Line Andover Continuum, EcoStruxure Building Operation, Field Devices, Satchwell MicroNet, Satchwell Sigma, TAC IA Series, TAC Vista Environment All electrical equipment Cause Improper installation can lead to the generation or exposure to high- and low-frequency EMI, which may disrupt system performance or cause equipment failure. Resolution To ensure reliable operation and minimize EMI-related issues, follow these key EMC installation practices: Key EMC Practices Follow Manufacturer Recommendations Always adhere to the installation guidelines provided by equipment manufacturers, as they are tailored to the specific EMC requirements of each product. Proper Cable Routing Separate power and signal cables. Avoid parallel runs near high-interference sources (e.g., motors, transformers). Shielding Use shielded cables for sensitive signals. Ground shields correctly—typically at one end to prevent ground loops. Grounding and Bonding Establish a low-impedance ground path. Bond all equipment to a common ground reference. Surge Protection Install surge protection on power and communication lines. Protect against lightning and switching transients. Filtering Use EMI filters on power inputs. Apply ferrite beads or chokes on signal lines where needed. Physical Separation Maintain spacing between high-voltage and low-voltage components. Isolate noisy equipment from sensitive electronics. Enclosure Design Use metal enclosures for shielding. Ensure proper sealing and grounding of enclosure panels. Installation Environment Avoid placing equipment near strong EMI sources (e.g., radio transmitters, welding equipment). Maintain clean, dry conditions to prevent corrosion and poor connections. Compliance Testing Verify installations against relevant EMC standards (e.g., IEC, EN). Conduct site surveys if persistent issues arise. Reference Document: Practical Installation Guidelines for Electromagnetic Compatibility

Issue A user wants to deploy the RTD-DI-16 module with a 3-wire PT100 sensor in an environment where temperatures drop below -50°C. The concern is whether the module can accurately read such low temperatures. Product Line Field Devices. EcoStruxure Building Operation, Environment Building Operation I/O Module 16 Ch RTD Cause The RTD-DI-16 module is designed to operate within a temperature measurement range of -50°C to +150°C. This limitation is defined in the product datasheet and reflects the module’s internal resolution and calibration capabilities. Temperatures below -50°C fall outside the supported range, which means: Resolution and accuracy are guaranteed only within this specified range. Values below -50°C will not be read and may result in inaccurate or undefined behavior. Resolution Do not use RTD-DI-16 for applications requiring measurements below -50°C. Consider alternative modules or solutions that support extended temperature ranges, such as those designed for cryogenic or ultra-low temperature environments. While the PT100 sensor itself may be capable of measuring lower temperatures, the RTD-DI-16 module cannot process those values accurately.

Issue How many TC900 thermostats can be connected to a single BACnet MS/TP network on an AS-P? Product Line EcoStruxure Building Operation, Field Devices. Environment Building Operation Automation Server Premium. Building Operation Automation Server Bundled. TC900 Protocol Series Thermostat Cause Understanding system limitations for a single COM port when using BACnet MS/TP protocol. Resolution   Maximum Number of TC900 BACnet Devices per MS/TP Network Port Device Type Baud Rate Max Devices AS-P 9600 bps 7   19200 bps 16   38400 bps+ 26 AS-B 9600 bps 4   19200 bps 10   38400 bps 15   76800 bps 20 Additional Notes Performance Optimization: MS/TP field buses perform better with an RS-485 repeater. This may be necessary depending on the network layout and connected devices. Device Load Consideration: All devices (including TC900 and third-party BACnet devices) should present a 1/8 Unit Load to ensure proper bus performance. Recommended Baud Rate: For optimal balance between speed and reliability, 38400 bps is typically the best choice.

Issue Can a single transformer be used to power both full-wave and half-wave devices, such as an AS-P controller and a DuraDrive actuator? Product Line Field Devices, EcoStruxure Building Operation, Andover Continuum, Satchwell MicroNet, TAC INET, TAC Vista Environment Full-wave and half-wave devices Cause There may be a need to simplify power distribution by using a single transformer for multiple device types. Understanding Rectifier Types Full-Wave Rectifiers Function: Converts both halves of the AC waveform into DC. Components: Uses four diodes in a bridge configuration. Efficiency: More efficient than half-wave rectifiers, providing a smoother DC output with less ripple. Half-Wave Rectifiers Function: Converts only one half of the AC waveform into DC. Components: Uses a single diode. Efficiency: Less efficient, resulting in higher ripple in the output voltage. Resolution Yes, a common transformer can be used to power both full-wave and half-wave devices provided the following conditions are met: External Isolation Transformers Non-isolated, connected devices of varying rectifier types require their own external isolation transformers. Use external isolation transformers for each device if there is doubt regarding whether an installation may cause equipment damage Transformer Sizing: Ensure the transformer’s VA rating exceeds the combined power requirements of all connected devices. Undersized transformers can lead to voltage drops, overheating, or device malfunction. Installation Guidelines: Before installation, refer to the document titled “Guidelines for Powering Multiple Actuators From a Common Transformer - Integration Guide.” Isolation & Compatibility: Confirm that devices do not interfere with each other’s operation when sharing a transformer. Avoid connecting devices with incompatible grounding or isolation requirements.

Issue What are the NEMA or IP ratings for a specific product? Product Line Andover Continuum, EcoStruxure Building Operation, Field Devices, Satchwell BAS & Sigma, Satchwell MicroNet, TAC IA Series, TAC INET, TAC Vista Environment All devices Cause Users often need to know whether a product is protected against: Water ingress Intrusion by foreign objects (e.g., dust, fingers) Resolution To determine a product’s protection level, refer to the Degrees of Protection document, which includes: IP Rating Chart NEMA Enclosure Rating Chart 🔹 Understanding IP Ratings An IP rating consists of two digits: First digit: Protection against solid foreign objects Second digit: Protection against water Examples: IP20: Protected against fingers (≥12.5 mm), no water protection IP10: Protected against objects up to 50 mm, no water protection If a product datasheet does not specify water ingress protection, the second digit defaults to 0. 🔹 Typical Building Products Many building automation products: Prevent insertion of fingers (≥12.5 mm) Do not offer water protection → Common rating: IP20 📎 Attachment Degrees of Protection.pdf (Includes full IP and NEMA charts)

Issue How to estimate the thermal load (in BTU/hr or Watts) that your controllers and equipment will produce. Product Line Andover Continuum, EcoStruxure Building Operation, Field Devices, Satchwell BAS & Sigma, Satchwell MicroNet, TAC IA Series, TAC INET, TAC Vista Environment Applicable to all electrical equipment used in building automation systems. Cause Understanding the thermal load is essential for: Sizing air conditioning systems Ensuring proper ventilation Avoiding overheating in enclosures Not all equipment datasheets provide thermal dissipation values, so manual calculation may be necessary. Resolution You can estimate the thermal load using the power consumption of each device. Formula To convert power (in Watts) to thermal load: BTU/hr = Power (W) × 3.412141633 Watts = Power (W) (already known) Note: 1 Watt = 3.412141633 BTU/hr Example Calculation Using the Continuum AC-1 I/O module: Power consumption: 2.6 W (without attached reader) Thermal load: BTU/hr = 2.6 × 3.412141633 = 8.87 BTU/hr Watts = 2.6 W If the reader is powered by the AC-1, include its power consumption in the total. International Units Reference Unit Conversion 1 Watt 3.412 BTU/hr 1 BTU/hr 0.293 Watts Additional Notes Use this method for any device where power consumption is known. For grouped equipment, sum the total wattage before converting. Consider using an online calculator for quick conversions.

Issue The H909HV-S6 current transformer does not change state, even though current flow is present. Product Line Andover Continuum, EcoStruxure Building Operation, Field Devices, Satchwell BAS & Sigma, Satchwell MicroNet Environment H909HV-S6 Current Transformer Cause The issue is due to incorrect wiring between the current transformer and the DDC controller. The installation instructions may appear to indicate that four connections are required to the DDC controller. However, this is not correct—only two connections are necessary. Resolution To resolve the issue: Review the wiring diagram in the installation instructions carefully. Ensure that only two connections are made between the CT and the DDC controller: The status output has two terminal sets, but only one connection is required from each set. Correct the wiring to match the proper configuration. 📄 Download the H909HV-S6 Datasheet

Issue Technicians require accurate resistance values for Satchwell and Sontay sensors to validate performance and troubleshoot temperature-related issues. Product Line Field Devices, Satchwell BAS & Sigma, Satchwell MicroNet Environment Satchwell BAS & Sigma Satchwell MicroNet Cause Resistance values vary by sensor type and temperature. Having a reference chart ensures correct diagnostics and sensor replacement. Resolution Below is a reference table showing resistance values for various Satchwell and Sontay sensor types across a range of temperatures. Sensor Resistance Table DRT, DOT, DDT, DWT, DST, DOS   DD 1401, DW 1202, DR 2253, DWS 1301   DW 1204, DWS 1202   DO 2202       Sontay SAT 1   Sontay SAT 2   Sontay SAT 3   Sontay SAT 4                       °C Ohms   °C Ohms   °C Ohms   °C Ohms                       -40 9711   0 2094   20 2708   -40 2317 -35 9604   1 2079   25 2592   -35 2246 -30 9465   2 2063   30 2474   -30 2163 -25 9288   3 2046   35 2346   -25 2067 -20 9067   4 2027   40 2216   -20 1962 -15 8796   5 2010   45 2086   -15 1849 -10 8472   6 1992   50 1950   -10 1733 -5 8093   7 1973   55 1818   -5 1617 0 7661   8 1953   56 1792   0 1504 5 7182   9 1934   57 1766   5 1397 10 6667   10 1911   58 1741   10 1298 15 6126   11 1892   59 1718   15 1208 20 5573   12 1872   60 1694   20 1128 25 5025   13 1851   61 1669   25 1057 30 4492   14 1830   62 1646   30 996 35 3987   15 1809   63 1622   35 942 40 3518   16 1787   64 1600   40 897 45 3089   17 1764   65 1578       50 2702   18 1740   66 1553       55 2358   19 1716   67 1530       60 2056   20 1690   68 1508       65 1792   21 1667   69 1484       70 1563   22 1644   70 1461       75 1364   23 1621   71 1439       80 1193   24 1596   72 1417       85 1047   25 1574   73 1396       90 921   26 1549   74 1375       95 815   27 1524   75 1353       100 722   28 1500   76 1333       105 643   29 1476   77 1312       110 575   30 1452   78 1293       115 517   31 1430   79 1276       120 466   32 1406   80 1258       125 423   33 1383   81 1240       130 386   34 1359   82 1222       135 353   35 1336   83 1205       140 324   36 1312   84 1188       145 300   37 1289   85 1171       150 278   38 1267   86 1154             39 1243   87 1138             40 1219   88 1122             41 1198   89 1107             42 1176   90 1089             43 1155   91 1075             44 1134   92 1061             45 1113   93 1047             46 1092   94 1033             47 1072   95 1020             48 1052   96 1004             49 1033   97 991             50 1013   98 978                   99 964                   100 950       📎 Note: These values are approximate and may vary slightly depending on installation conditions. Always refer to the official datasheet or use calibrated instruments for precise diagnostics. Click here to download a pdf with this information.

Issue What is the accuracy of the I/A Series MN-Sx S-Link wall sensors? This information is required for project submittal documentation. Product Line Field Devices, Satchwell MicroNet, TAC IA Series Environment MN-SX MN-S1 MN-S2 MN-S3 MN-S4 MN-S4-FCS MN-S5 S-Link Cause Sensor accuracy specifications are needed to meet submittal requirements for building automation projects. Resolution Refer to document TPA-RKFD-09-0021.00 for factory-calibrated accuracy and stability specifications. Sensor Specifications: Element Type: Precision Thermistor Operating Temperature Range: 0 – 50 °C (32 – 122 °F) Stability: < 0.02 °C (< 0.04 °F) per year (typical) Accuracy: Temperature °C Accuracy Temperature °F Accuracy 24 °C ± 0.6 °C 75 °F ± 1.0 °F 0 to 50 °C ± 1.7 °C 32 to 122 °F ± 3.0 °F

Issue Can the SHO2XA2A humidity sensor be safely exposed to hydrogen peroxide (H₂O₂) during decontamination procedures? Product Line Field Devices. Environment SHO2XA2A. Cause The SHO2XA2A, along with SHD2 and CP series humidity sensors, are not resistant to hydrogen peroxide. Exposure to H₂O₂ can degrade sensor components, leading to inaccurate readings or device failure. Resolution For environments requiring decontamination with hydrogen peroxide, use the SH5 or ST5 series instead. These models feature probes specifically designed to withstand H₂O₂ exposure.

Issue You need to integrate both: VingCard lock MTH-G-5045 / WDC-G-5045 window and presence contacts …into a Zigbee network on the same RP-C (Room Controller) device. Product Line EcoStruxure Building Operation. Environment Building Operation Room Controller (RPC) 24 V. Zigbee Cause When performing device discovery: If using Zigbee VingCard Network, the MTH-G-5045 / WDC-G-5045 devices are not found. If using Zigbee Standard Security Network, the MTH-G-5045 / WDC-G-5045 devices are found. This occurs because the two Zigbee networks are fundamentally different in protocol and device compatibility. Resolution It is not possible to use both Zigbee VingCard Network and Zigbee Standard Security Network simultaneously on the same RP-C device. You must choose one Zigbee network type per RP-C: If you need VingCard lock integration, use Zigbee VingCard Network. If you need MTH-G-5045 / WDC-G-5045 integration, use Zigbee Standard Security Network. ⚠️ Important: These networks are mutually exclusive on a single RP-C. Consider deploying separate RP-C devices if both network types are required in the same installation.

Issue When using MZ20A or MZ20A-R actuators with the surface-mounted S-UNC-AO card, the actuator may stop functioning, and the analogue output remains at 0 volts after a power cycle. Product Line Satchwell BAS & Sigma Environment Satchwell Sigma S-UNC-AO Card MZ20A Actuators Cause If both the controller power and battery switches are turned off, upon restoring power, the analogue output may fail to resume normal operation, remaining at 0V. This is due to the absence of a discharge path for the analogue output channels. The precise root cause of the controller lock-up is currently undetermined. However, it has been observed that certain conditions during editing can trigger this behavior. Resolution To prevent this issue: Install a 2.2kΩ resistor (2K2 ohm) between each analogue output channel and the common 0V rail . The resistor provides a discharge path, ensuring the output voltage returns to normal after power is restored. Resistor Specifications: Type: Carbon Film Rating: ¼ watt, 5% tolerance Example: RS Stock No. 135-881 (or equivalent) 💡 Note: This modification is only required for MZ20A actuators. If the actuator is replaced with a different model, the resistor should be removed.

Issue What is the maximum density of people that the Insight sensor (SXWREISBLE10001) can detect? Product Line Field Devices, EcoStruxure Building Operation Environment Insight sensor. Cause There is no official specification available that defines the exact density of people the Insight sensor can detect. This limitation makes it difficult to provide a precise number for maximum detection density. Resolution The maximum raw count for the people counter is 32 individuals within the detection area. Accuracy of detection is up to 90%, but it decreases as the number of people increases within the detection zone. The detection area is influenced by the mounting height of the sensor. A higher mounting position typically results in a larger detection area but may reduce accuracy in crowded conditions. Additional Notes For optimal performance, ensure the sensor is mounted according to published guidelines. Consider environmental factors such as lighting, movement patterns, and obstructions that may affect detection accuracy. If higher accuracy or density detection is required, consider deploying multiple sensors.

Issue Negative values presented to an IC3-SNP Integration Controller are incorrectly displayed starting at 65535, rather than their true negative representation. Product Line Satchwell BAS & Sigma Environment Sigma IC3-SNP Cause The IC3-SNP Integration Controller miscalculates negative values due to limitations in its internal value handling logic. Resolution To resolve this issue, a custom Lookup Table must be created and assigned to the Analogue Input object within Sigma. Follow these steps: Step-by-Step Instructions Create a Lookup Table Open Sigma System Manager. Navigate to System Setup. Create a new Lookup Table using the configuration below. Assign the Lookup Table Edit the Analogue Input object. Assign the newly created Lookup Table number. Select Download Object. Download the Lookup Table Open Sigma System Diagnostics. Download the Lookup Table to the IC3-SNP controller. Lookup Table Configuration If values are presented in whole numbers: Input Output 0 0 32767 3276.7 32768 -3276.8 65535 -0.1 If values are presented with a ×10 factor, adjust the table accordingly. Additional Notes Ensure the Lookup Table matches the scaling of incoming values. This workaround corrects the display issue but does not change the underlying controller logic.

Issue The IP rating for the ETD200-6 is not specified in the product documentation. Product Line Field Devices Environment ETD200-6. Cause Documentation does not include the enclosure's IP rating, leading to uncertainty during specification or installation. Resolution The enclosure of the ETD200-6 has an IP10 rating. Note: IP10 indicates limited protection against solid objects greater than 50 mm and no protection against liquids. This rating may affect installation environments where higher protection is required.

Issue How to be redundant with your intelligent Building Management System (iBMS) Product Line Andover Continuum, EcoStruxure Building Operation, Field Devices, Satchwell Sigma, Security Expert, TAC INET Environment Existing intelligent Building Management System Open Mind High Availability Solutions (Deprecated by manufacturer) everRun MX ztC Edge Cause In engineering, redundancy is the duplication of critical components of a system with the intention of increasing the system's reliability. To be redundant with an intelligent Building Management System (iBMS) would take on two possibilities. Have an alarm on critical points alerting personnel who move into action quickly replacing control boards or devices in the event of failure. Have secondary backup controllers which upon failure, which are used to control devices resuming functionality. This is accomplished through programming the BAS with event sequences triggered from alarms or flags noting the failure. Redundancy capabilities and feasibility are site specific. Ascertaining failure in boards, points, or devices is crucial to creating secondary measures to keep seamless processes going and resume with functions.   Error detection and correction with maintenance is often the best practice for preventing failure. Worn components are the leading cause of failure, followed by a lack of planning and consideration in the protection of electrical components through power surges or failures.   For the database, backups including automated backups for MSDE, SQL Express, and Full SQL are available. For further information on database backups and options, take a look at Microsoft SQL Management Studio. For Host Computer backups, look at adding a secondary computer which replicates the database and can capture transactions and messages should a failure with the primary host computer take place. Also work with the local IT department to keep machines up to date, safe, and clean of 3rd party applications which may interfere with integrity. Schneider Electric’s building management systems are designed such that building control continues even when controller to server communication is disrupted. The BMS server is home to a database of alarm and historical data, as well as system parameters and programs. When a server or its network connection fails, the collection of data from building controllers halts until the problem is resolved. For data critical applications, this solution provides an environment capable of preventing the data loss that results from these types of failures.  Although we do support its use with EcoStruxure Building Operation, Security Expert, Continuum, I/NET, Vista, Sigma, and I/A Series as a disaster recovery solution, we do not provide direct support for EverRun. Resolution For Open Mind High Availability Solutions guide please look at the following link; Open Mind High Availability Solution guide For everRun MX solution guide please look at the following link; everRun MX guide For ztC Edge solution guide please look at the following link; ztC Edge guide