Building Automation Knowledge Base

Issue Satchwell ALM series Linear Actuator requires replacement. Environment Satchwell ALM series Actuator installed on Satchwell MJF, MZ, MZF, VJF, VSF, VZ or VZF Series Plug and Seat Valve Body.    Satchwell ALM series Linear Actuators. Cause Obsolescence of Satchwell ALM series Linear Actuator. Resolution Replace Satchwell ALM series Linear Actuator with MV15B-230 Linear Actuator and Linkage Kit and wire as follows :- ALM = MV15B-230 + L7SV (880-0126-000) Linkage Kit. Actuator wiring :- ALM Terminal Number 1  =  MV15B-230 Terminal Number Y2  ALM Terminal Number 2  =  MV15B-230 Terminal Number Y1  ALM Terminal Number 3  =  MV15B-230 Terminal Number N N.B. ALM power consumption  =  4.5 VA          MV15B-230 power consumption  =  12 VA operating and 15 VA Transformer sizing Should the Satchwell ALM series Actuator include a wired Auxiliary Switch (ALA1211) then the following Accessory should also be installed on the MV15B-230 Actuator as appropriate and should be wired as follows :- S2 - MV15B = Two independent 250 volt 10 amp / 3 amp rated SPDT Auxiliary End Point Switches. Auxiliary Switch wiring :- ALA1211 Terminal S1  =  S2 - MV15B Switch 1 Terminal C ALA1211 Terminal S2  =  S2 - MV15B Switch 1 Terminal B ALA1211 Terminal S3  =  S2 - MV15B Switch 1 Terminal A ALA1211 Terminal S4  =  S2 - MV15B Switch 2 Terminal C ALA1211 Terminal S5  =  S2 - MV15B Switch 2 Terminal B ALA1211 Terminal S6  =  S2 - MV15B Switch 2 Terminal A   Please check the latest catalog for current equipment.  

Issue SVT Controller will not operate plant under Auto control following Clock replacement Environment SVT 4201 Optimiser Controller  SVT 4251 Optimiser Controller  Cause SVT Controller will not operate plant under Auto control following Clock replacement due to lack of re-commissioning. Resolution Re-commission SVT Controller using Test method. The absence of plant control may normally be confirmed by lack of illumination of Burner L E D (bottom left corner of SVT)  Test method of re-commissioning may be undertaken as follows: Ensure SVT 4201 Analogue Clock override button is set to AUTO condition and Clock is in an ON period. Ensure SVT 4251 Digital Clock status is set to AUTO condition and Clock is in an ON period. Ensure SVT Manual Override Switch (lower left of SVT) is set to AUTO Note SVT Preheat Selector Switch (lower centre of SVT) setting (scaled 1,2,3,4,5,T) Turn Preheat Selector Switch fully clockwise from Preheat number setting to letter T Turn Manual Override Switch fully anti-clockwise from AUTO setting to O (Off)  Turn Manual Override Switch fully clockwise from O (Off) setting to + (ON) Burner L E D should illuminate and plant should start. Turn Manual Override Switch anti-clockwise from + (ON) setting to AUTO Burner L E D should remain illuminated and plant should continue to run. If plant continues to run then proceed to action L.  If plant remains OFF then return to action A. Turn Preheat Selector Switch anti-clockwise from T position to previously noted SVT Preheat Selector Switch setting.  

Issue CSC 5 Series Climatronic Compensator Controller Battery missing when Controller supplied. Environment CSC 5 Series Climatronic Compensator Controllers. Cause CSC 5 Series Climatronic Compensator Controllers - not all specifications require a Battery to be fitted.  CSC 5252 Climatronic Compensator Controller - has no Clock and therefore requires no Battery to be fitted. CSC 5352 Climatronic Compensator Controller - has a Clock and therefore requires a Battery to be fitted. CSC 5352 Climatronic Compensator Controller - Battery should be packed with Controller when new. The Battery (3.6V Lithium AA) is required to power the Clock whilst the Controller is powered OFF for a period of typically 1 year of continuous use. The typical shelf life of the Battery is 10 years. Resolution If CSC 5252 Climatronic Compensator Controller is to be installed then no Battery is required. If CSC 5352 Climatronic Compensator Controller is to be installed then Battery should be fitted. If CSC 5352 Climatronic Compensator Controller Battery is not packed with Controller then its absence should be reported to the supplier. Please check the catalog for current equipment

Issue Is IPv6 IP Addressing format support by Sigma controllers? Environment Sigma IPv6 IPv4 Cause Worldwide IP addresses are running low and to handle the demand for new IP Addresses the IP protocol has been updated from IPv4 to IPv6 Resolution Currently, Sigma devices do not supported IPv6.  IPv4 is the recommend IP Addressing protocol.

Issue Satchwell FEU 4-port Unit Control Valve Open / Close status required relative to spindle position.  Environment Satchwell FEU 2, 4, 5 and 6 Series 4-port Unit Control Valve installations. Cause Open / Close status of Satchwell FEU 4-port Unit Control Valve is not visually apparent  Resolution Observe Satchwell FEU 4-port Unit Control Valve spindle position. FEU 2 Series  =  Spindle UP OPEN / Spindle DOWN CLOSE FEU 4, 5 and 6 Series  =  Spindle DOWN OPEN / Spindle UP CLOSE

Issue DC1100 / DC1400 displays identical temperatures for all connected Sensors.  It is not uncommon for a temperature of 39 deg C to be displayed for each Sensor connected to the Controller. Environment DC1100 Stand Alone Optimiser / Compensator Controller DC1400 Stand Alone Optimiser / Compensator Controller Sensors compatible with DC1100 :- A701 Room Temperature Sensor A702 Outside Air Temperature Sensor A703 Pipe Temperature Sensor A704 Contact Temperature Sensor STC 600 D Contact Temperature Sensor           (Original Drayton Sensor = A704) STO 600 D Outside Air Temperature Sensor      (Original Drayton Sensor = A702) STP 600 D Pipe Temperature Sensor                 (Original Drayton Sensor = A703) STR 600 D Room Temperature Sensor              (Original Drayton Sensor = A701) Sensors compatible with DC1400 :- STC 600 Contact Temperature Sensor               (Original Satchwell Sensor = DST) STO 600 Outside Air Temperature Sensor          (Original Satchwell Sensor = DOT)    STP 660 Pipe Temperature Sensor                     (Original Satchwell Sensor = DWT) STR 600 Room Temperature Sensor                  (Original Satchwell Sensor = DRT) 39 deg C. Cause DC1100 / DC1400 displays identical temperatures for all connected Sensors.  A Sensor temperature of 39 deg C is a common value displayed. Resolution Check each Sensor is correctly connected to its appropriate "Common" Terminal of the DC1100 / DC1400 Wiring Base Check each Sensor Cable Screen is correctly connected to the Earth Terminal of the DC1100 / DC1400 Wiring Base Check that a good Earth connection exists between the Earth Terminal of the DC1100 / DC1400 Wiring Base and the site Earth Check that a good site Earth is available for connection to the DC1100 / DC1400 Wiring Base. N.B. In the event that the DC1100 / DC1400 continues to display identical temperatures for all connected Sensors following completion of the above checks then it is suggested that the Cold Start procedure is applied to the Controller and the result observed.

Issue S-E VZ29 / VZ39 / VZ49 Valve Body produces excessive let-by.   Environment S-E VZ29 2-port Valve Body controlled by S-E MZ20 series Actuator. S-E VZ39 3-port Valve Body controlled by S-E MZ20 series Actuator. S-E VZ49 4-port Valve Body controlled by S-E MZ20 series Actuator. Cause S-E MZ20 series Actuator Manual Override set to value other than ZERO Resolution 1.  Check S-E MZ20 series Actuator Manual Override facility is set to ZERO. 2.  If S-E MZ20 series Actuator Manual Override facility is set to ZERO then investigate Valve Body condition / duty compatibility. Instances of excessive let-by experienced with S-E Valve Bodies from the VZ29 / VZ39 / VZ49 family may result from the setting of the Manual Override facility on the S-E MZ20 series Actuator controlling it, rather than the Valve Body itself. S-E MZ20A and MZ20B Actuators include a Manual Override facility, comprising a screw, accessed through a hole in the top of the Actuator, which may be raised and lowered by means of a 3mm Allen Key inserted through the hole in the top of the Actuator. The Manual Override position is required to be set to ZERO upon manufacture.  If the screw is not set to the ZERO position prior to dispatch however, then this may result in the Valve Spindle being depressed by the amount of Manual Override applied. Where a Valve Body is letting by excessively, then initially the Actuator Manual Override setting should be checked and reset to ZERO if necessary.  

Issue Satchwell VSF or VJF Valve Body controlled by Satchwell Spring Return Actuator requires replacement. Environment Satchwell VSF or VJF Valve Body installed in Water or Steam Control Valve applications. Cause Obsolescence of Satchwell VSF or VJF Control Valve Body. Resolution STEAM APPLICATION 1.  Replace Satchwell VSF or VJF Valve Body with S-E Two-Port Flanged Valve Body. Where an existing Satchwell VSF or VJF Valve Body is utilised in a STEAM application, then the VSF or VJF Valve Body should be replaced by a suitably sized S-E VGS211F Valve Body, thus enabling steam having a steam inlet pressure up to 1300 kPa and a temperature up to 200 deg C to be controlled. It should be noted however that the face-to-face dimension and overall dimensions of each S-E Valve Body will differ to those of the Satchwell VSF or VJF Valve Body. It should also be noted that the operation of the VGS211F Valve Spindle is the reverse of that of the VSF or VJF Valve Spindle. When the VGS211F Valve Spindle is UP, or in the fully extended position, then the Valve is OPEN. Similarly, when the VGS211F Valve Spindle is DOWN, or in the fully retracted position, then the Valve is CLOSED This will therefore result in the need to replace the existing Satchwell Actuator with the correct model of S-E M700 Actuator, in order to ensure the correct operation of the Valve Body in the event of electrical power failure. It is important that the above limitations are recognised when replacing a Satchwell VSF or VJF Valve Body with a S-E VGS211F Valve Body in retrofit projects. Such limitations do not apply to new projects where a new S-E VGS211F Valve Body and a new S-E  M700 Actuator are being selected, providing of course that an Actuator having the correct spring action in the event of electrical power failure is selected. N.B. Steam Control Valves are normally required to CLOSE in the event of electrical power failure. In the case of the S-E VGS211F therefore the S-E M700 SRSD Actuator should be selected. WATER APPLICATION 1.  Replace Satchwell VSF or VJF Valve Body with S-E Two-Port Flanged Valve Body. A number of alternative models of S-E Two-Port Flanged Valve Bodies are available to replace existing Satchwell VSF or VJF Two-Port Flanged Valve Bodies. It should be noted however that the face-to-face dimension and overall dimensions of each S-E Valve Body will differ to those of the Satchwell VSF or VJF Valve Body.  

Issue Replacement of Satchwell DRT3451 Adjustable Room Temperature Sensor by S-E STR612. Environment Satchwell DRT3451 Adjustable Room Temperature Sensor installations. Cause Obsolescence of Satchwell DRT3451 Adjustable Room Temperature Sensor Resolution Replace Satchwell DRT3451 Adjustable Room Temperature Sensor with S-E STR612 The STR612 provides the same functionality as the DRT3451 differing only in its appearance, dimensions and terminal identification. Equivalent terminal identification is as follows STR612 Terminal 22 (A) = DRT3451 Terminal A STR612 Terminal 23 (C) = DRT3451 Terminal C Connection of STR612 to CZU Fan Coil Unit Temperature Controller STR612 Terminal 22 (A) – connect to CZU Terminal 9 STR612 Terminal 23 (C) – connect to CZU Terminal 10 (CZU Setpoint should be set to 10 deg C)

Issue DC1100 & DC1400 Optimiser / Compensator Controller Cold Start malfunction. Environment DC1100 Optimiser / Compensator Controller. DC1400 Optimiser / Compensator Controller Cause DC1100 & DC1400 Optimiser / Compensator malfunction preventing Cold Start procedure being undertaken.. Resolution 1.  Repeat DC1100 & DC1400 Controller Cold Start procedure. A manufacturing problem experienced with the DC1100 and DC1400 may result in difficulty applying the Cold Start procedure. Faults have been reported in respect of a number of DC1100 Controllers in particular, where difficulty has been experienced when applying the Cold Start procedure. The fault appears in those Controllers where the Enter and Exit Keys foul their respective cut-outs in the Top Cover Panel, thus preventing Cold Start from being achieved. This is due to a conflict in assembly tolerances that can cause the Keys to remain depressed after they have been pressed in, due to their being trapped by the cut-outs they should pass through. In such instances it may be necessary to undertake the Cold Start procedure a number of times before any trapped Key is released sufficiently to enable resetting of the Controller to be achieved. Actions are currently in hand to rectify this matter and the positioning of the cut-outs in the Top Cover Panel relative to the Key positions has been addressed from a design point of view. Examples of the Top Cover Panel incorporating newly dimensioned cut-outs are not due to be available for inclusion in production assemblies until Week Number 2010 45 at the earliest however. Consequently current production assemblies incorporating the existing Top Cover Panel will continue to be utilised in all newly manufactured Controllers for the moment at least. Similarly an opportunity will not arise until Week 2010 45 for any Controllers currently held in stock in S-E Sweden to be re-worked to include the new Top Cover Panel prior to their sale.

Issue S-E MD20 Actuator Clamp Drive Shaft Clip fouling LMD/AR-MBF Linkage Kit Mounting Platform inhibits Actuator rotation. Environment S-E MD20 Actuator installed on Satchwell MBF Valve Body. Cause S-E MD20 Actuator Clamp Drive Shaft Clip cut out undersized. Resolution Measure diameter of S-E MD20 Actuator Clamp Drive Shaft Clip cut out. S-E MD20 Actuator Clamp Drive Shaft Clip cut out diameter should be 47mm Replace S-E MD20 Actuator Clamp Drive Shaft Clip with another having modified cut out if dimension less than 47mm. The diameter of the cut out in the original LMD/AR-MBF Linkage Kit Mounting Platform was such that the MD20 Actuator Drive Shaft Clip could be prevented from turning freely with the Drive Shaft. The LMD/AR-MBF Mounting Platform was modified in August 2007, when the diameter of the cut out in the Mounting Platform was increased to 47mm, thus overcoming the fouling of the MD20 Actuator Drive Shaft Clip. It is possible to ascertain whether the LMD/AR-MBF Mounting Platform in use is of the original or modified design by measuring the diameter of the cut out in the Mounting Platform If the diameter of the LMD/AR-MBF Mounting Platform cut out is less than 47mm, then the MD20 Actuator Drive Shaft Clip will foul the LMD/AR-MBF Mounting Platform. The MD20 Actuator Drive Shaft Clip however is retained in a groove within the Drive Shaft and whilst the Clip may be prevented from turning freely with the Drive Shaft, the turning of the Drive Shaft itself will not be impeded.

Issue TAC Valve Body published Cv values may differ markedly to equivalent Kv values.  Environment TAC Valve Body published data utilised when sizing and selecting S-E / TAC Control Valves. Cause TAC Valve Body published Cv values based on flow rates measured in U.S. Gallons per minute rather that U.K.Gallons per minute., Resolution Check published Cv value relative to published Kv value stated for TAC Valve Body. If published Cv value is within 3% of published Kv value then Cv value may be used for sizing / selection of Valve Body. If published Cv value is up to 17% higher than Kv value then Cv value should not be used for sizing / selection of Valve Body. Cv values published in older TAC Valve Body Data Sheets should be checked before considering use in U.K. valve sizing formula. Numerous TAC Valve Body Data Sheets show that for a particular Kv value, the equivalent Cv value is approximately 17% higher than the Kv value. For example, where TAC Valve Body Data Sheet shows Kv = 10, then equivalent Cv = 11.7 or in other words Cv = Kv x 1.17 Cv values published in Satchwell Valve Body Data Sheets however show the relationship between Kv and Cv as:- Kv = Cv x 1.03 or in other words Cv = Kv x 0.97 This difference in equivalent values is due to Cv values stated in some TAC Data Sheets being based on flow rates measured in U.S. Gallons per minute, while those Cv values stated in Satchwell Data Sheets however are based on flow rates measured in U.K. Gallons per minute. If flow rates are measured in U.S. Gallons per minute, then the following conversion factor applies :- Kv = Cv x 0.86, as the U.S. Gallon is smaller than the U.K. Gallon. Taking published TAC Valve Body Data Sheet information therefore, where the Cv value is stated as 11.7 and the Kv value is stated as 10, confirms that the conversion factor Kv = Cv x 0.86 ( 11.7 x 0.86 = 10 ) has been applied, further confirming that published Cv values are in fact based on U.S. Gallons and not U.K. Gallons. Consequences of this are as follows : - If it is assumed that the published Cv value is a U.K. Cv value, when in fact it is a U.S. Cv value, and the published Cv value is then used as a basis for valve sizing and selection, then this will result in a smaller Valve Body being selected than would otherwise be the case. Consequently, once installed, the selected Valve Body will produce a much higher pressure drop and correspondingly higher authority for a given flow rate than would otherwise have been the case. In practice the installation of an undersized Control Valve can result in starvation of flow to the item of plant being controlled and the potentially costly replacement of the Valve Body for another of a larger size. Similarly, the installation of an undersized Control Valve will result in a greater pressure drop being applied to the hydraulic circuit than may be desirable and could lead to an adverse effect on the performance of the associated circulating pump. It is important to ensure therefore that where both Kv and Cv values are published for a given Valve Body, the Kv value is utilised when undertaking valve sizing and selection.  This should ensure that a Valve Body of the correct size is selected. Measures are currently in place to actively remove all references to Cv values from both S-E / TAC Data Sheets and all future editions of the S-E HVAC Valves and Actuators Catalogue.

Issue Actuator not Tracking Control Signal. Environment Actuator typically controlling a damper or valve Cause This problem is usually traced to one of three common problems: Insufficient power to initialize actuator. Incorrect control signal. Actuator is bound. Resolution Verify the associated troubleshooting/resolutions with reference to the numbered causes above: Insufficient power to initialize actuator. Verify transformer capacity is above required power up inrush load. To determine if this is the problem, check published VA requirement. When multiple devices are powered from a common transformer, disconnect all other devices from transformer output or use isolated transformer. Incorrect control signal. Verify correct control signal is selected for the actuator. Verify actuator operation by using a Loop Calibrator such as the Fluke 789 to simulate the control signal. If the actuator tracks the simulated signal, the problem is at the controller or in the wiring. Actuator is bound. Verify actuator motion matches the controlled device. Is the actuator trying to close a valve or damper that is already closed?

Issue TS-57XX-85X and TS-67XX-85X 10K thermistor with 11 K shunt resistance table Environment Unknown Environment Cause Unknown Cause Resolution Temp (°C) Temp (°F) Ohms (11K shunt)   -40.0°     -40.0°   10,517   -39.0°     -38.2°   10,489   -38.0°     -36.4°   10,460   -37.0°     -34.6°   10,430   -36.0°     -32.8°   10,397   -35.0°     -31.0°   10,364   -34.0°     -29.2°   10,329   -33.0°     -27.4°   10,292   -32.0°     -25.6°   10,254   -31.0°     -23.8°   10,214   -30.0°     -22.0°   10,172   -29.0°     -20.2°   10,129   -28.0°     -18.4°   10,084   -27.0°     -16.6°   10,037   -26.0°     -14.8°   9,988   -25.0°     -13.0°   9,938   -24.0°     -11.2°   9,885   -23.0°     -9.4°   9,830   -22.0°     -7.6°   9,773   -21.0°     -5.8°   9,715   -20.0°     -4.0°   9,654   -19.0°     -2.2°   9,592   -18.0°     -0.4°   9,527   -17.0°     1.4°   9,460   -16.0°     3.2°   9,391   -15.0°     5.0°   9,320   -14.0°     6.8°   9,247   -13.0°     8.6°   9,171   -12.0°     10.4°   9,094   -11.0°     12.2°   9,015   -10.0°     14.0°   8,933   -9.0°     15.8°   8,850   -8.0°     17.6°   8,764   -7.0°     19.4°   8,677   -6.0°     21.2°   8,587   -5.0°     23.0°   8,495   -4.0°     24.8°   8,402   -3.0°     26.6°   8,307   -2.0°     28.4°   8,210   -1.0°     30.2°   8,111   0.0°     32.0°   8,012   1.0°     33.8°   7,910   2.0°     35.6°   7,807   3.0°     37.4°   7,702   4.0°     39.2°   7,595   5.0°     41.0°   7,489   6.0°     42.8°   7,380   7.0°     44.6°   7,270   8.0°     46.4°   7,160   9.0°     48.2°   7,048   10.0°     50.0°   6,937   11.0°     51.8°   6,825   12.0°     53.6°   6,711   13.0°     55.4°   6,597   14.0°     57.2°   6,483   15.0°     59.0°   6,369   16.0°     60.8°   6,255   17.0°     62.6°   6,141   18.0°     64.4°   6,027   19.0°     66.2°   5,912   20.0°     68.0°   5,798   21.0°     69.8°   5,686   22.0°     71.6°   5,572   23.0°     73.4°   5,460   24.0°     75.2°   5,348   25.0°     77.0°   5,238   26.0°     78.8°   5,127   27.0°     80.6°   5,018   28.0°     82.4°   4,909   29.0°     84.2°   4,802   30.0°     86.0°   4,696   31.0°     87.8°   4,591   32.0°     89.6°   4,487   33.0°     91.4°   4,385   34.0°     93.2°   4,284   35.0°     95.0°   4,184   36.0°     96.8°   4,086   37.0°     98.6°   3,989   38.0°     100.4°   3,894   39.0°     102.2°   3,800   40.0°     104.0°   3,707   41.0°     105.8°   3,617   42.0°     107.6°   3,528   43.0°     109.4°   3,441   44.0°     111.2°   3,355   45.0°     113.0°   3,271   46.0°     114.8°   3,189   47.0°     116.6°   3,107   48.0°     118.4°   3,028   49.0°     120.2°   2,951   50.0°     122.0°   2,875   51.0°     123.8°   2,801   52.0°     125.6°   2,729   53.0°     127.4°   2,658   54.0°     129.2°   2,588   55.0°     131.0°   2,521   56.0°     132.8°   2,455   57.0°     134.6°   2,390   58.0°     136.4°   2,327   59.0°     138.2°   2,266   60.0°     140.0°   2,206   61.0°     141.8°   2,148   62.0°     143.6°   2,091   63.0°     145.4°   2,036   64.0°     147.2°   1,982   65.0°     149.0°   1,929   66.0°     150.8°   1,878   67.0°     152.6°   1,827   68.0°     154.4°   1,779   69.0°     156.2°   1,732   70.0°     158.0°   1,685   71.0°     159.8°   1,640   72.0°     161.6°   1,597   73.0°     163.4°   1,554   74.0°     165.2°   1,513   75.0°     167.0°   1,472   76.0°     168.8°   1,433   77.0°     170.6°   1,395   78.0°     172.4°   1,359   79.0°     174.2°   1,322   80.0°     176.0°   1,287   81.0°     177.8°   1,253   82.0°     179.6°   1,220   83.0°     181.4°   1,188   84.0°     183.2°   1,157   85.0°     185.0°   1,126   86.0°     186.8°   1,097   87.0°     188.6°   1,068   88.0°     190.4°   1,040   89.0°     192.2°   1,013   90.0°     194.0°   987   91.0°     195.8°   961   92.0°     197.6°   936   93.0°     199.4°   912   94.0°     201.2°   888   95.0°     203.0°   865   96.0°     204.8°   843   97.0°     206.6°   821   98.0°     208.4°   800   99.0°     210.2°   780   100.0°     212.0°   760   101.0°     213.8°   741   102.0°     215.6°   722   103.0°     217.4°   704   104.0°     219.2°   686   105.0°     221.0°   669   106.0°     222.8°   652   107.0°     224.6°   636   108.0°     226.4°   620   109.0°     228.2°   605   110.0°     230.0°   590   111.0°     231.8°   576   112.0°     233.6°   561   113.0°     235.4°   548   114.0°     237.2°   534   115.0°     239.0°   521   116.0°     240.8°   509   117.0°     242.6°   496   118.0°     244.4°   484   119.0°     246.2°   473   120.0°     248.0°   462   121.0°     249.8°   451

Issue NEMA 4 classed DuraDrive actuators cannot be used with the VB-7323 diverting valves Environment NEMA 4 DuraDrive actuators VB-7323 diverting valves Cause Which NEMA 4 classed DuraDrive actuators can be used with the VB-7323 diverting valves Resolution There are no NEMA 4 solutions available. Consider using the MA-318 or 481 for two position applications. No modulating spring return options are available but non-spring return gear train actuators with AV-391 (150 pound plungers) can be used when the AM-363 gasket is added.

Issue Set-up the Link Addressing using the Pocket Terminal (LA +) for port 1 via the DNN3 service port and set port 2 on the DNN3 to be Serial PPP.  Can't communicate to the DNN3 from the Sigma server and global data is not being passed between the two VLAN's. Environment Multiple Sigma controllers across at least two Ethernet VLAN's.  DNN3's (version 1.h) connected to each VLAN. Each DNN3 is connected to the VLAN via port 1 and port 2 is configured as a 'virtual' serial PPP port but not connected to a device. Cause No routing information (static routes) entered into the DNN3's.   Although Link Addressing can be correctly configured the DNN3 devices also need to know where to transmit the point to point global data, that is the router device for the local Ethernet VLAN or default gateway. By having two ports configured on the DNN3 network routing messages RIP will be enabled and broadcast and will advertise the port 2 address as a potential but false route off the network, therefore RIP must also be disabled.  Resolution Using Pocket Terminal or Windows Hyperterminal enter a default Static Route to the DNN3 via its service port.  Use the generic entry 0.0.0.0/0 for the destination sub-LAN and mask.  For example; SR+ 0.0.0.0/0 192.168.1.253   1      (Where 192.168.1.253 is the default gateway and 1 is the DNN port number). RIP must also be disabled on the DNN3 port 1.  For example; RIPD 1

Issue Created a new lookup table for an analogue output (AO) object to provide 10% steps and not 1% steps.  Displaying the object value always shows 1% steps. Environment Sigma Controller (All Versions) Cause The analogue output object value is the input value for the lookup table and the output of which is then passed to the A to D converter and then to the physical output. Resolution The value can be seen by a multimeter connected to the physical output. If the value of the output needs to be displayed via the Sigma front end then a programmable object is required to process the lookup table and then cross referenced to a standard analogue output object (with the default lookup table). Example of programmable object: 10 Xflo = POINT 0|51 20 YFLO = LOOKUP (1812, XFLO) 30 RETURN VIA TEXT 92 VALUE YFLO Where POINT 0|51 is the control/input object and 1812 is the lookup table number.

Issue ModBMS will not allow an OPC Client to write OPC DA values to Sigma. But, reading the ModBMS/Sigma values does work. Environment Sigma 4.04 and below ModBMS OPC Client Cause ModBMS uses the DDE functions to read/write data to the Sigma server.  A Sigma release 4.04 and below the write function was not supported and was fixed in Sigma release 4.05 onwards. Resolution Upgrade to Sigma 4.05 (onwards) where the DDE write function has been fixed.

Issue How to select a platinum sensor compatible with the Analog Input (AI) object in WorkPlace Tech. Environment WorkPlace Tech I/A Series Lon (MNL) controllers I/A Series BACnet (MNB) controllers Cause Sensor manufacturers provide platinum sensors with different Temperature Coefficient of Resistance (TCR). Resolution The Analog Input (AI) object supports 1Kohm platinum sensor with Temperature Coefficient of Resistance (TCR) equal to 0.00385 OHM/OHM @ °C. Check manufacturer's datasheet and select sensor with TCR of  0.00385 OHM/OHM @ °C

Issue Satchwell ALX series Linear Actuator requires replacement. Environment Satchwell ALX series Linear Actuator installed on Satchwell MJF, MZ, MZF, VJF, VSF, VZ or VZF series Plug and Seat Valve Body. Cause Obsolescence of Satchwell ALX series Linear Actuator. Resolution Replace Satchwell ALX series Linear Actuator with MV15B-24 Linear Actuator and Linkage Kit :-  ALX = MV15B-24 + L7SV (880-0662-000). Note: this part no. is for both actuator and linkage kit.  N.B.  Should the Satchwell ALX series Actuator include a wired Auxiliary Switch then the following Accessory should also be installed on the MV15B-24 Actuator as appropriate :-  S2 – MV15B = Two independent 250 volt 10 amp / 3 amp rated SPDT Auxiliary End Point Switches.    Particular care should be taken when selecting an S-E Forta MV15B-24 Actuator to replace an existing Satchwell ALX series Actuator. The S-E MV15B-24 Actuator may be used to replace an existing Satchwell ALX series Actuator but it should be noted that where an existing Satchwell ALX series Actuator has been connected directly to a Satchwell Controller, an independent Transformer rated to provide the greater level of power required by a single S-E MV15B -24 Actuator (12VA) will also be required. (e.g. S-E Transformer Type TR32)  Where an existing Satchwell ALX series Actuator has been connected via an independent Transformer, it is possible that the Transformer may have been rated to provide the level of power required by a single ALX series Actuator (3.5VA) only. In such circumstances the existing independent Transformer may also require replacement by another independent Transformer, rated to provide the greater level of power required by a single S-E MV15B-24 Actuator (12VA) (e.g. S-E Transformer Type TR32)