Label: field devices - Building Automation Knowledge Base

Issue Drayton Theta ll ES4 Optimiser Controller requires replacement. Product Line Field Devices, Satchwell Sigma Environment Stand alone discreet Drayton Optimiser Controller Theta ll ES4 Cause Obsolescence of Drayton Theta ll ES4 Optimiser Controller. Resolution Please note that the Satchwell SVT controller is no longer available, and that the only possible replacement is the DC1400. Please refer to What is the replacement for the SVT controller range? for more details.  Replace Drayton Theta ll ES4 Optimiser Controller with Satchwell SVT Optimiser Controller.  N.B.  Two models of the Satchwell SVT Optimiser Controller are available :-  SVT 4201 with Analogue Timeswitch  SVT 4251 with Digital Timeswitch, Details of the Satchwell SVT Optimiser Controllers may be viewed here. It should also be noted that the associated Drayton Theta ll ES4 Optimiser Controller Sensors are obsolete.  These Sensors are not compatible with the Satchwell SVT Optimiser Controllers and must therefore be replaced.  Unlike the Drayton Theta ll ES4 Optimiser Controller, which requires the installation of both an Outside Air Temperature Sensor and an Inside Air Temperature Sensor, the Satchwell SVT Optimiser Controllers require the installation of a Inside Air Temperature Sensor only.  A STR 614 Inside Air Temperature Sensor is packed with the Satchwell SVT Optimiser Controller when supplied new :-   Details of the STR 614 Room Temperature Sensor may be viewed here.

Issue How to protect an OAT sensor from the sun? Product Line Field Devices Environment Outside Air sensors, Outdoor Temperature Sensor STO100 System Vista, Xenta STO200 System I/NET STO500 System Continuum STO600 System Satchwell STO600D System Drayton STO300 Outdoor temperature transmitter ETO100, ETO200, ETO500, ETO800 Cause Direct solar heating will affect the outside temperature reading. Resolution We do not supply sun shields for an Outside Air Sensors as there should never be a requirement to fit one. The Outside Air Temperature sensor for a building should always be fitted to the North side of the building where it will not be in direct sunlight (or the South side in the southern hemisphere). The temperature on the East, South or West sides of any building will always be higher than the North side (in the northern hemisphere) and give inaccurate readings if the sensor is mounted there. Also any sort of sunshade will also act as a shield to retain the heat also giving an erroneously high reading. For sites like weather stations where the measurements are to be taken in a field installation a Stevenson screen could be used, these are available from specialist instrument suppliers. A web search should provide local suppliers. Also see Recommended locations for Temperature Sensors, Valves, and Actuators for further details on sensor location.

Issue Where can I find datasheets, install guides and other documentation on the HID SmartID, iClass, HID Proximity and Indala Proximity cards and readers? Product Line Andover Continuum, Field Devices, TAC INET Environment Electronic Access Control cards and readers for Continuum and I/Net products. Cause Additional product information from HID may be required that is not available on Schneider Electric's own websites. Resolution Schneider Electric supply a subset of the full HID range of cards and readers and these are detailed in the Electronic Access Control Catalogue or see How to determine the part number for the card format required for part number information. For HID product information this can be directly downloaded from the HID Global website. This contains  datasheets, installation guides, application notes, feature lists, brochures and other documentation. HID also have a "Knowledge Center" website that allows you to search for product information and help: HID Knowledge Base. Information on the specific ranges can be obtained from the following links: SmartID: SmartID Cards iClass: iClass Readers iClass SE Readers iClass Cards HID Prox: HID Proximity Readers HID Proximity Cards Indala Prox: Indala Proximity Readers Indala Proximity Cards

Issue Without knowing the Device ID / Device Instance these devices cannot add to the MSTP network in the AS or ES. Product Line Andover Continuum, EcoStruxure Building Expert, EcoStruxure Building Operation, Field Devices Environment Automation Server Enterprise Server BACnet SE7000 Cause Only the MAC ID / Com Address is shown in the display but not the Device ID / Device Instance. Resolution SE7200x Models Default Device ID is set to: 72000 + MAC Where MAC is the current MAC address of the device. The device ID will also be upgraded as soon as there is a change to the device’s MAC. For example, when a SE7200F5045B controller with a MAC address of 41 is connected to a network, its default Device Name will be SE7200F5x45B-41 and its default Device ID will be 72041. SE73xxx Models Default Device ID is set to: 73000 + MAC Where MAC is the current MAC address of the device. The device ID will also be upgraded as soon as there is a change to the device’s MAC. For example, when a SE7300C5045B controller with a MAC address of 63 is connected to a network, its default Device Name will be SE7300C5x45B-63 and its default Device ID will be 73063. Click here for the Integration Manual. Please refer to the SE7300 series BACnet controller does not come online in StruxureWare Building Operation if SE7300 controller does not come online.

Issue Satchwell TR Series 230 V ac / 24 V ac Transformer requires replacement. Product Line Field Devices Environment Satchwell TR1 (25VA), TR2 (50VA), TR3 (80VA), TR4 (200VA) and TR5 (300VA) 230 V ac / 24 V ac Transformers. Cause Obsolescence of Satchwell TR1, TR2, TR3, TR4 and TR5 230 V ac / 24 V ac Transformers. Resolution Replace Satchwell 871-1-201 TR1 (25VA) 230 V ac / 24 V ac Transformer with S-E TR 32 (32VA) 230 V ac / 24 V ac Transformer SE part number 3413032000. Replace Satchwell 871-1-202 TR2 (50VA) 230 V ac / 24 V ac Transformer with S-E TR 60 (60VA) 230 V ac / 24 V ac Transformer SE part number 3413060000. Replace Satchwell 871-1-203 TR3 (80VA) 230 V ac / 24 V ac Transformer with Transformer of another manufacturer's origin. Replace Satchwell 871-1-204 TR4 (200VA) 230 V ac / 24 V ac Transformer with Transformer of another manufacturer's origin. Replace Satchwell 871-1-205 TR5 (300VA) 230 V ac / 24 V ac Transformer with Transformer of another manufacturer's origin. The S-E TR range of Transformers provide the same functionality as the Satchwell TR range of Transformers but differ in appearance, dimensions and the range of VA ratings available. Specification EN 60742, with which the Satchwell range of Transformers complied, has been superseded by Specification EN 61558, with which the S-E range of Transformers comply. To review the transformer data sheet, see TR32-60 Transformer Data sheet en [101917].pdf.

Issue The discontinuation of the SVT controller due to component obsolescence. Product Line Field Devices Environment SVT Optimiser 4201 4251 Cause What replacements are available for the SVT 4201 / 4251 controllers? Resolution Important Note - The replacement controller mentioned in this article is no longer available, and therefore a replacement for the SVT 4201 / 4251 is not available. The SVT controller range has been discontinued due to component obsolescence. The SVT controller was a basic optimiser that performed the start calculation using only an internal temperature sensor. There are no exact replacements for this controller available. What is available? The Schneider Electric DC1400 Optimiser / Compensator is the recommended replacement, but this is not a direct replacement. Differences in the controllers. The SVT controller provides only an optimum start, the DC1400 provides optimum start and stop. The SVT controller uses only a room temperature sensor for the start calculation, the DC1400 uses only a room temperature sensor and an outside temperature sensor for the start/stop calculations. The SVT controller has a dedicated "Boost" relay, which allows overriding of a CSC compensator, and control valve. This is an internal function with the DC1400 optimiser/compensator. The DC1400 has many other built in functions.   Controller wiring - Modifications will be required. SVT general wiring connections. Relay R1 is the main plant relay and relay R2 is the boost relay. To see the full controller details, please click SVT Optimiser DS2001 0210.pdf DC1400 general wiring details.   To see the full controller details, please click DC1400 DS2044A.pdf Controller Sensors As already indicated, the SVT controller uses only a space temperature detector, and this sensor is NOT suitable to use with the DC1400. The DC1400 controller will, as a minimum, require a room temperature sensor and an outside temperature sensor, meaning that extra wiring for the outside temperature sensor, and the sensor itself, will need to be installed. For details on suitable sensors, please refer to What sensors does the DC1400 optimiser/compensator require?

Issue Verifying the Com Port on a PC is working properly by using "Loopback" test in Terminal Emulator. Product Line Andover Continuum, Field Devices, Other, Satchwell MicroNet, Satchwell Sigma, TAC IA Series, TAC INET, TAC Vista Environment Hyperterminal RS-232 serial port Cause The following test writes to the serial port and reads from the same port. This will verify the Full duplex operation of the RS-232 communication. Resolution Short the TX and RX pins of the cable (pins 2 and 3) following the pinouts below. Gender is determined by pin type.                Male DB9 (Left) and Female DB9 (right)   Launch Hyperterminal by selecting Start>>Programs>>Accessories>>Hyperterminal. If you do not have Hyperterminal, please read Hyperterminal on Microsoft Windows Operating Systems. If you are asked if you would like to install a modem, select No. Choose any icon and name the session, select "OK". In the next Pop-Up menu, choose direct to COMx (where x is the number of the COM Port you are testing.) Set the flow control setting to None. Leave the other settings to default settings, select "OK" Select File » Properties from the menu bar, select the Settings tab, and then push the ASCII Setup button. Check the option for Echo typed characters locally. Type something. If you see double characters the serial port is setup correctly and is functional. The display is showing characters that are sent out and what is read in. The Emulator will send and display the TX and immediately read and display  RX. If you see exactly what you are typing, you have a communication issue. which could be: Bad Com Port Bad cables Pins not shorted correctly If you are out of physical ports to try, use a USB Serial Port converter. If you are using a USB, use Reassigning a USB Serial Adaptor to a desired COM port for instructions of assigning Com to another port.

Issue What is the unit load of SE8300 that will help me to count how many SE8300 controllers that can be added on AS ComA and ComB Product Line EcoStruxure Building Expert, EcoStruxure Building Operation, Field Devices Environment SER8300 room controller SE8300 room controller Automation Server Cause Documentation does not state the unit load of the SE8000 range Resolution The Generic application note AN01 can be applied with answers to the transceiver interface attributes below. The SE8000 range use the ADM4850A transceivers which are a failsafe transceiver (not requiring bias) and reduced 1/8 UL load. In addition the 100K local bias resistors have been eliminated and therefore the 1/8 UL of the transceiver would be the total UL presented to the bus by the SE8000.   Transceiver Xcvr Unit Load Xcvr Failsafe Adaptor Circuit Bias Circuit Bias Load Total Unit Load Isolated 485 Bus ADM 4850A0 0.125 Yes None None 0.125 Yes** ** Unlike the normally recommended interconnection of the communication common/reference (ground) terminal on all bus devices such as documented in the generic application note for the isolated RS485 bus interfaces, the Viconics bus should be operated with the communications REF (reference) terminal open on each SE8000 and not connected to the bus shield wire, or to any other circuit. Based on the above the total number of devices can be calculated as 32/0.125 = 256 The BACnet MSTP standard specifies that the address range for BACnet master devices is 0-127 and therefore an Automation Server is limited to 127 devices per com port (254 total per AS) so this should effectively be the limiting factor.   Also check out the SmartStruxure-RS485-Controller Unit Load Quick-Help video on the Exchange.

Issue Replacing Satchwell Sensors with Schneider Electric part numbers Product Line Field Devices Environment Sensors Cause Cross referencing older 'T' type sensors to the current version. Resolution Outside Sensor DOT2301 , DOT0001, DOT0002 is now STO600 Immersion Pipe Sensor DWT1701 (125mm), DWT1702 (200mm), DWT0001 is now STP660 (note, if replacing sensor only then DWA0001 required). Strap On/Pipe Contact Sensor DST1601 , DST0001 is now STC600 Duct Sensor (mainly FCUs) DDU1803 , DDU0001 is now STD670 Duct Sensor DDT1701 (300mm) , DDT1702 (460mm) , DDT0001 is now STD660 Room Sensor DRT3453 (sensor only, no setpoint adjust) is now STR600 For other DR and DRT sensors see Replacements for Satchwell sensors Drayton Room Sensor A701 is now STR600D Drayton Outside Sensor A702 is now STO600D Drayton Immersion Sensor A703 is now STP600D Drayton Strap On / Contact Sensor A704 is now STC600D

Issue The ZigBee network configuration parameters (Channel and PAN ID) of the MPM matches those of the room controller, but the room controller will not come online. Symptoms: For SE(R)8000 Series: The "ZigBee Short" field in the "Network" menu option keeps changing. For SE(R)7000 Series: The Green LED is blinking twice where 3 blinks are expected. (Description of LED status defined in LED status for SE7000 Room Controller ZigBee communication module) Product Line EcoStruxure Building Expert, Field Devices Environment SmartStruxure Lite Multi-Purpose Manager SE8xxx Room controller SE8000 Series SER8300, SE8300, SE8350 Viconics branding VT8000 Series Cause A temporary bug causes the MPM to prevent a specific ZigBee com module (installed inside the room controller) from joining the network on a particular channel. Resolution MPM has to be reset using one of the following methods Method 1: Unplug and replug power to the MPM Method 2: Click on the "Restart Controller" button as shown in image below. Note: Database must be saved before restarting the controller to avoid loss of data.    

Issue How and where should sensors be fitted and maintained? Product Line Field Devices Environment Temperature and humidity sensors Cause General advice is required for cleaning and maintaining temperature and humidity sensors. Resolution The most important thing about sensors is to fit them correctly and appropriately during installation as this will reduce the amount of maintenance required. Fit them in locations that are accessible as well as away from dust and dirt to reduce the amount of cleaning required. See Recommended locations for Temperature Sensors, Valves, and Actuators for further advice on sensor location. Check the specific installation instructions for the sensor used and verify they are fitted accordance with this. All sensors should be regularly checked for correct operation as part of a regular building maintenance plan and replaced if they are not operating correctly. Most sensors are sealed units and do not require maintenance, maybe just an occasional dust with a clean cloth to remove surface dust, these include duct and immersion temperature sensors, outdoor sensors and thermostats. Room temperature and humidity sensors usually have vents or gauzes to allow airflow over the elements; these should be regularly dusted and can be cleaned with careful use of a vacuum cleaner or air blower to remove dust or other particles from within the unit. Do not however use equipment that can produce excessive pressures like compressed airlines as this could result in damage to the sensor. If you do need to use cleaning products on the sensors, then first check the materials used on that specific sensor (see datasheet, most sensors use Polycarbonate or ABS plastics) then verify that the cleaning chemicals are safe for use on that type of plastic or metal. Chemical/ material compatibility data is widely available on external websites (e.g. http://www.coleparmer.co.uk/Chemical-Resistance )

Issue Drayton Theta II ES Optimiser and EC Compensator datasheets and technical documentation Environment Drayton Cause Datasheets Resolution Drayton Theta II ES Optimiser Datasheets Drayton Theta II EC Compensator Datasheets For sensor information see What is the resistance for the DOC, DRC, DSC and DLC sensors for a Drayton Theta II EC

Issue The MVB actuator is no longer available from Schneider Electric Replacing a Controlli S300 Actuator Product Line Field Devices Environment VMB valves MVB actuators S300 actuator Cause Only the actuator requires replacing but the MVB is no longer available from Schneider Electric. Resolution Note: The MVB actuators are still manufactured by Controlli, but not distributed by Schneider Electric. Use the AG52 valve linkage kit 880-0129-000. For the Controlli MVB22, MVB26 and MVB28 or S300 replace with the MV15B-230 actuator For the Controlli MVB46 replace with the MV15B-24 actuator For the Controlli MVB32, MVB52 and MVB56 replace with the M800 880-0310-030 actuator If a D36 auxiliary switch was fitted in the  the MVB actuator or if the auxiliary switch was used in the S300 actuator then the following auxiliary switch packs can be used: M800, use the 880-0104-000 kit or order the M800-S2 880-0311-030 actuator which includes 2 auxiliary switches. MV15B-24/230, use the 880-0469-000 kit. Note: if the valve also requires replacing see VSB, VSB..F, VMB, VMB..F Schneider Electric replacement valves.

Issue The default dynamic port range for TCP/IP has been changed with Windows Vista and later Microsoft operating systems. Product Line Field Devices, Satchwell Sigma Environment Microsoft Windows Vista Microsoft Windows 7 Microsoft Winsow 8/8.1 Microsoft Windows Server 2008 Ethernet communications Microsoft Windows 10 and server 2012, when Sigma is part of an SBO/EBO front end system. Cause To comply with Internet Assigned Numbers Authority (IANA) recommendations, Microsoft has increased the dynamic client port range for outgoing connections in Windows Vista, Windows 7 and in Windows Server 2008. The new default port range starting at port 49152 through to port 65535. This is a change from the earlier Windows configuration that used a default port range of 1025 through to 5000. Sigma used port 49152 as default for communications between Sigma server and Sigma controllers. Resolution You can use SE Legacy Port Reservation to reserve the port used by Sigma. Another resolution would be to redefine the dynamic port range Windows Server 2008 can use to 50000 to 65535, hence keeping the port free for Sigma. (Sigma port requirements can be found in What port numbers are used by the Sigma system?). You can view the dynamic port range on a computer that is running Windows Vista, Windows 7, Windows Server 2008 or 2012 by using the following netsh commands: netsh int ipv4 show dynamicport tcp netsh int ipv4 show dynamicport udp netsh int ipv6 show dynamicport tcp netsh int ipv6 show dynamicport udp Note The range is set separately for each transport and for each version of IP. The port range is now truly a range with a starting point and with an endpoint. Microsoft customers who deploy servers that are running Windows Server 2008 or 2012 may have problems with RPC communication between servers if firewalls are used on the internal network. In these cases, we recommend that you reconfigure the firewalls to allow for traffic between servers in the dynamic port range of 49152 through 65535. This range is in addition to well-known ports that are used by services and by applications. Or, the port range that is used by the servers can be modified on each server. You adjust this range by using the netsh command, as follows: netsh int set dynamic start=number num=range This command sets the dynamic port range for TCP. The start port is number, and the total number of ports is range. The following are sample commands: netsh int ipv4 set dynamicport tcp start=10000 num=1000 netsh int ipv4 set dynamicport udp start=10000 num=1000 netsh int ipv6 set dynamicport tcp start=10000 num=1000 netsh int ipv6 set dynamicport udp start=10000 num=1000 These sample commands set the dynamic port range to start at port 10000 and to end at port 10999 (1000 ports). The minimum range of ports that can be set is 255. The minimum starting port that can be set is 1025. The maximum end port (based on the range being configured) cannot exceed 65535. To duplicate the default behavior of Windows Server 2003, use 1025 as the start port, and then use 3976 as the range for both TCP and UDP. This results in a start port of 1025 and an end port of 5000. Note When you install Microsoft Exchange Server 2007 on a Windows Server 2008-based computer, the default port range is 1025 through 60000. Click here to be linked to the Microsoft Knowledge Base Article Number 929851.

Issue Temperature Sensor Location Valve Location Actuator Location Product Line Field Devices Environment Actuator Sensor Valve Cause Where to fit and locate field devices. Resolution Valves: If the valve is lift and lay type and the application is diverting, then the valve must be fitted in the return. If the valve is lift and lay type and the application is mixing, then the valve must be fitted in the flow. The rule of thumb for lift and lay valves is "2 ins and 1 out" Rotary (shoe) valves can be fitted in either the flow or return for either mixing or diverting applications. Use pipe unions, so that the valve can easily be removed. Actuators on Valves: If the heating medium is steam then the actuator/valve arrangement is not fitted vertically, tilt the valve/actuator to an angle so that heat can convect away vertically and the actuator is not subjected to as much heat. In all cases, do not fit the actuator/valve arrangement so that the actuator is vertically under the valve. If the valve leaks, it will damage the actuator. Temperature Sensor location, in both wet and air applications the sensor need to sense correctly the medium it is in. Where possible install in a location for easier maintenance e.g. at a height reachable from a fixed floor level. Pipe Temperature Sensors: The tip of the sensor needs to be in the core of the medium i.e. the centre. The sensor needs to be fitted where stratification does not take place or is reduced. This can be achieved by fitting after a pump or after a bend where turbulence provides a good mix. If the sensor is fitted on a bend, then the probe faces the flow of/oncoming water. In CHW applications, fit the pocket just off horizontal, so that any condensation forming in the pocket can drain away. Adequate insulation will prevent condensation forming in the pocket. If fitting vertically in the top of the pipe is unavoidable see Oil for the DWT0001 (or STP660) pocket sensor to prevent problems with condensation. Duct Temperature Sensor: Supply Air - If a probe type sensor is fitted, it needs to be ideally 3 meters downstream and in the centre of the duct from the supply fan and preferably after a bend fitted with turning vanes. Return Air - The temperature sensor needs to be fitted before/upstream of the extract fan. Frost Coils - Temperature sensor, due to the short distance available, probe sensors are difficult to locate, but try to be as far away from the coil e.g. on the other side of the pre-filter bank and in the centre of the duct/AHU. Even better is to use an averaging type temperature sensor. Frost Coils - Fan Hold Off thermostat. Allow sufficient capillary to cover the battery surface. Lace the capillary across the frost battery on the downstream side using the correct clips. If the thermostat body needs to be fitted on the external side of the AHU, then fit with the minimum of capillary on the external of the AHU. Use a grommet or stuffing gland to protect the capillary as it goes through the AHU skin. If the AHU is fitted outside or is in an unheated space then the thermostat needs to fitted internal to the AHU. Do not cut the capillary if it is too long. Tidy capillary ends so they do not flap in the airstream. Outside Temperature Sensor: Outside temperature sensors should be located correctly to the local region you are in and the application they are serving i.e. compensated outside sensor in the UK are fitted on a wall facing north. The sensor should not be fitted on flues, chimneys, near opening windows. They should not be fitted near to compounds containing plant expelling heat e.g. chiller compounds. The sensor should be fitted at a height that does not require the use of steps or ladders for maintenance. Room Temperature Sensor: Sensors should be fitted at an agreed height and not fitted on external walls, near opening windows and doors or above radiators. They need to be exposed to the area they are controlling and not be directly influenced by heat sources e.g. computers. Sensors with exposed setpoint adjust or controls need to be fitted at a lower height so that people with disabilities can adjust them. Sensors that are fitted onto partitioned walls or have a conduit need the hole plugging so that there are no draughts. Sensors that are fitted directly to concrete or steel beams should be packed out with a thermal insulating material. Valves and Sensor Wiring: Allow sufficient cable to allow removal of actuator or sensor without having to disconnect the device. See the full Building Controls Group - Control Sensor Installation guide.

Issue Interfacing M-Bus meters to Modbus. Product Line Andover Continuum, EcoStruxure Building Operation, Field Devices, Satchwell Sigma Environment Sigma IC3-Modbus Mbus Modbus Kampstrup Heat Meter Multical 601 Cause Multical 601 M-Bus meters are required to be interfaced with the BMS. Resolution A M-Bus/Modbus converter (RS-485, RS-232 or TCP) and configuration software are required. The converter  and software are available from SyxthSense or similar suppliers. Using the converter and software setup the M-Bus/Modbus system without the BMS system connected. The M-Bus/Modbus converter will automatically assign the M-Bus registers as Modbus registers. From the software note the tables and registers used. Create the Modbus registers as required for the BMS system used. For Sigma - Create the gateway.txt, connect and configure the IC3-Modbus. A sample of the gateway.txt can be downloaded here: MultiCal Modbus Gateway.zip. For further M-Bus information see M-Bus Protocol Information. 

Issue What is the unit load of the SpaceLogic SLP Room Units that will help me to calculate how many SLP Room Units that can be added on ComA and ComB of a SmartX Server. Product Line EcoStruxure Building Operation, Field Devices Environment SpaceLogic SLP Room Unit SmartX Server Cause Documentation does not state the Unit Load (UL) of the SpaceLogic SLP Room Unit. Resolution The Generic application note AN01 can be applied with answers to the transceiver interface attributes below. The SpaceLogic SLP Room Unit range use the SN65HVD1781DR transceivers which are a failsafe transceiver (not requiring bias) and reduced 1/10 UL. In addition there are no local bias resistors and therefore the 1/10 UL of the transceiver would be the total UL presented to the bus by the SpaceLogic SLP Room Unit. Transceiver Xcvr Unit Load Xcvr Failsafe Adaptor Circuit Bias Circuit Bias Load Total Unit Load Isolated 485 Bus SN65HVD1781DR 0.1 Yes None None 0.1 No Based on the above the total number of devices can be calculated as 32/0.1 = 320. The BACnet MSTP standard specifies that the address range for BACnet master devices is 0-127 and therefore a SmartX Server is limited to 127 devices per com port (254 total per Server) so this should effectively be the limiting factor. Since the SpaceLogic SLP Room Unit does not have an isolated RS-485 interface it conforms to Generic RS-485 Network Device Configuration 1 in EBO Webhelp.  A network consisting of only SpaceLogic SLP Room Units should only require a 120 ohm termination resistor at each end of the bus and not require any bias resistors. Also check out the SmartStruxure-RS485-Controller Unit Load Quick-Help video on the Exchange.

Issue What is the unit load of a TC300 thermostat and what are the bias and termination requirements when used with a SmartX Server. Product Line EcoStruxure Building Operation, Field Devices Environment TC303-3A2LM TC303-3A4LM TC303-3A2DLMS TC303-3A4DLMS SmartX Server Cause Documentation does not state the RS-485 transceiver type for the TC300 range, making it unclear how many devices can exist under a SmartX servers RS-485 serial port ComA or ComB. Resolution The answers to the transceiver interface attributes below can be applied with to the Worksheet for Configuration of RS-485 Bus with generic RS-485 devices on Webhelp Q1 Failsafe Receiver The TC300 does not use an RS-485 transceiver with an integrated idle-state failsafe receiver. Q2 Data Transmission Speed TC300 thermostats manufactured from November 2018 onward can be configured to communicate at 9600 or 4800 bps. TC-300 thermostats manufactured before this date can only communicate at 4800 bps. Q4 Isolated Interface The TC300 does not provide an isolated RS-485 interface. Q6a Measured Resistance With no electrical connections to the TC300, the measured resistance between the RS-485 low-side (-) signal and the communications common is 10K ohms. Based on this the unit load of the TC300 is 1.2 (12.000/10,000) Bias requirements and number of devices If the length of the RS-485 bus is less than 150M (500ft) then Generic RS-485 Device Configuration 3 from Webhelp can be applied. Using this configuration the recommended 3300 bias resistors present a unit load of 3.6 (12,000 / 3,300). The SmartX server adds 0.5UL. The remaining node budget is calculated as: 32 - 3.6 - 0.5 = 27.9UL. Since the TC300 has a unit load of 1.2 the maximum number of devices that can be placed under each comm port using this configuration is 27.9 / 1.2 = 23.25 If the length of the RS-485 bus is greater than 150M (500ft) then Generic RS-485 Device Configuration 7 from Webhelp can be applied. Using this configuration the dual end-point bias configuration presents a unit load of 24UL (12,000 / (1,000 / 2) = 24). The SmartX server adds 0.5UL. The remaining node budget is calculated as: 32 - 24 - 0.5 = 7.5UL. Since the TC300 has a unit load of 1.2 the maximum number of devices that can be placed under each comm port using this configuration is 7.5 / 1.2 = 6.25 Also check out the SmartStruxure-RS485-Controller Unit Load Quick-Help video on the Exchange.  h

Issue Thread size/standard. Product Line Field Devices Environment Pocket Well Pocket STP 50mm Brass  9121040000    Pocket STP 100mm Brass  9121041000    Pocket STP 150mm Brass  9121042000    Pocket STP 200mm Brass  9121043000    Pocket STP 250mm Brass  9121044000    Pocket STP 300mm Brass  9121045000    Pocket STP 400mm Brass  9121046000   Pocket STP 50mm Stainl.steel 9121050000    Pocket STP 100mm Stainl.steel 9121051000 Pocket STP 150mm Stainl.steel 9121052000    Pocket STP 200mm Stainl.steel 9121053000    Pocket STP 250mm Stainl.steel 9121054000    Pocket STP 300mm Stainl.steel 9121055000    Pocket STP 400mm Stainl.steel 9121056000 Cause This information is necessary if an adaptor or similar is required for installation. Resolution The thread is of cylindrical type, and follows DIN 228 and BSP (British Standard Pipe) which both are identical. Size of thread is G1/2. For additional information on Pocket materials, please see Sensor pockets material specification Stainless steel and Sensor pockets material specification nickel plated brass.

Issue What is the unit load (UL) of the SpaceLogic SP90 PIBCV Actuators that will help me to calculate how many SP90 PIBCV Actuators can be added on ComA and ComB of a SmartX Server. Product Line EcoStruxure Building Operation, Field Devices Environment SpaceLogic SP90 PIBCV Actuator SmartX Server Cause Require the Unit Load (UL) of the SpaceLogic SP90 PIBCV Actuator to calculate the number of actuators allowed on the RS-485 network.  Resolution The Generic application note AN01 can be applied with answers to the transceiver interface attributes below. The SpaceLogic SP90 PIBCV Actuator range uses the SN65HVD1780DR transceivers which are a failsafe transceiver (not requiring bias) and reduced 1/10 UL. In addition, there are no local bias resistors and therefore the 1/10 UL of the transceiver would be the total UL presented to the bus by the SpaceLogic SLP Room Unit. Transceiver Xcvr Unit Load Xcvr Failsafe Adaptor Circuit Bias Circuit Bias Load Total Unit Load Isolated 485 Bus SN65HVD1780DR 0.1 Yes None None 0.1 No Based on the above the total number of devices can be calculated as 32/0.1 = 320. The BACnet MSTP standard specifies that the address range for BACnet master devices is 0-127 and therefore a SmartX Server is limited to 127 devices per com port (254 total per Server) so this should effectively be the limiting factor. However, the documentation recommends using only up to 64 devices with the same RS-485 transceiver, or 32 devices with different RS-485 transceivers.   Since the SpaceLogic SP90 PIBCV Actuator does not have an isolated RS-485 interface it conforms to Generic RS-485 Network Device Configuration 1 in EBO Webhelp.  A network consisting of only SpaceLogic SP90 PIBCV Actuators should only require a 120-ohm termination resistor at each end of the bus and not require any bias resistors. Also, check out the SmartStruxure-RS485-Controller Unit Load Quick-Help video on the Exchange.