Input Analog Function Module -101
Contents
1. CONTR LS Controls Group 507 E Michigan Street P O Box 423 Milwaukee WI 53201 12 Function Modules Input Analog Function Module 101 Notes FAN 636 Metasys Network Technical Manual Release 5 02 Printed in U S A2. Device COM i 5 2 499 ohm resistor oa yields 0 to 10 VDC 0 20MA Position the resistor i B 7 on close to the IAN to WAM Coe Se eliminate line losses TBF in left bay TBF in right bay Se of NCUINEU of NCU NEU N Q AN Strip wire and insert into side face of TBF y w X Use set screw in front face to secure p Input Type Switch Setting Voltage V RTD T Figure 2 Connections and Switch Setting for VDC mA Applications Function Modules Input Analog Function Module 101 5 2 Wire RTD Figure 3 shows the required connections for two inputs of 2 wire 1K RTD applications Bast Frame IAN is _ AN Connection to 9 rren 2 Current DCM140 DCM 250 ft max Optional Er Limiting completed through 140 18 AWG 6 Devices internal connector twisted pair Optional on end of t A function module U IAN2 n TBF in left bay TBF in right bay oe 4 oFNCUINEU ofNCU NEU AK hy S EE i N N DN Strip wire and insert into side face of TBF M OX Use set screw in front face to secure p Input Type Switch Setting Voltage V RTD T Figure 3 Connections and Switch Setting for 2 wire RTD Applications 6 Function Modules Input Analog Function Module 101 Overview Assumptions Procedure Commissioning Procedures To commission an IAN Function Module e Install
3. by hand Described in the NCU NEU Technical Bulletin Function Modules Input Analog Function Module 101 7 4 Verify that the point object defined in the System summary the function module and the field device are connected as defined by the engineering drawing Ensure that you connect each device through terminal blocks corresponding to the subslot defined in software for that device e Channel 1 refers to subslot 1 whose wires connect to terminal blocks 1 and 2 e Channel 2 refers to subslot 2 whose wires connect to terminal blocks 4 and 5 Cabling to Left hand Channel 1 Terminal Blocks Subslot 1 Channel 2 Subslot 2 ex Figure 4 Terminal Block Connections Leading to an IAN101 Line For RTD applications it is necessary to compensate in software for line Compensation length and wire gauge resistances Adjust Linearization Parameter 1 as RTD Only described in the Analog Input AI Object Technical Bulletin in Volume III of the Metasys Network Technical Manual Device Verification Device verification assumes that the operating software for the network has been downloaded to the NCM controlling the panel For each IAN Function Module associated with a DCM on the network 1 Select the System summary that includes this IAN object 2 Verify that the object s Value attribute as seen in the summary matches the actual value for the field device Calibrate if necessary Step 3 below 3 If calibr
4. Metasys Network Technical Manual 636 Function Modules Section METASYSE Technical Bulletin Issue Date 0194 Input Analog Function Module 101 Introduction Page 3 e Product Overview 3 e Theory of Operation 3 e Design Considerations 4 e Application Wiring Diagrams Voltage and Current 2 Wire RTD 6 Commissioning Procedures 7 e Overview 7 e Assumptions 7 e Procedure 7 e Line Compensation RTD Only 8 e Device Verification 8 Troubleshooting Procedures 9 e Testing for an Open Line 9 e Ordering Information 11 Indicates a change since the last printing 1994 Johnson Controls Inc 1 Order No 636 030 2 Function Modules Input Analog Function Module 101 Product Overview Theory of Operation Introduction The Input Analog Function Module FM IAN101 0 connects two independent analog inputs through a single FM slot to a Digital Control Module 140 The control process is as follows step numbers correspond to numbers in Figure 1 1 Analog input signals either 0 to 10 VDC or 1K RTD from up to two field devices arrive via the terminal blocks to the IAN 0 to 20 mA DC signals can be converted to voltage and read by use of an external resistor The IAN conditions the signals and protects the base frame with current limiting devices A switch on the IAN front panel selects the input type both channels must be of the same type either both voltage or both RTD The IAN routes each input a
5. at is slightly lower than an IUN attached to the same RTD When exchanging an IAN for a IUN the worst case inaccuracy results in lt 1 F difference The IAN enables you to connect two separate devices of the same signal type 1 e both voltage or both RTD to the DCM 140 via a single FM slot When implementing this dual input FM the DCM140 s scan rate of those inputs will change from its typical once per second scan to once every six seconds To ensure that all fast control loops are properly handled assign all high priority inputs to single input FMs This change in scan rates is independent of the mix of FMs the DCM140 reads an IAN input at once per six seconds and all other input FMs at once per second 4 Function Modules Input Analog Function Module 101 Application Wiring Diagrams Voltage and Current Figure 2 shows the connections required for one input of proportional 0 to 10 VDC device 1 and one input of proportional 0 to 20 mA device 2 The Voltage RTD switch must be set to V Note that for current applications lack of an installed resistor will cause a voltage reading up to the output device s maximum voltage output Base Frame IAN OUT A COM Current Connection to Y Limiti DCM140 DCM 250 ft max Optional X miting completed through 140 18 AWG Aes 6 Devices internal connector abr twisted pair p Bad on end of Field f 4 function module
6. ation is required adjust Linearization Parameter 1 a Using the Focus window adjust Linearization Parameter 1 for proper calibration b Upload the NCM to save the new settings in the archive file 8 Function Modules Input Analog Function Module 101 Testing for an Open Line Troubleshooting Procedures A test for an open line is described below Figure 5 next page is a troubleshooting flowchart that applies to failures between point objects and field devices connected through the IAN If the analog input LED is not lighting one of the signals is unreliable A possible cause may be that either of the two lines is open To test both channels 1 Disconnect a wire from one channel s terminal strip 2 Use an ohmmeter to test the RTD value of that channel for an open line 3 Repeat procedure with the second channel Function Modules Input Analog Function Module 101 9 Can gt lt JE EN v Does AX the IAN No nnect to a DOM1 40 Replace the DCM101 Does point status which communicates to anX No p with a DCM140 gt indicate correct values gt lt NCM200 or higher aad Replace the NCM101 with Release 5 02 with an NCM200 Nor higher lt Install Release 5 02 or higher ve Sar Yes lt is he OX Fix definition object defined x detinition Ker DCM as See Operator Workstatio
7. n gt a DCM140 User s Manual v V ves Pos fo SS pr N _7 Does the X SV switch position _ No Ensure both inputs are of Kg reflect both inputs gt gt the same type and set p both V or both ya switch to that type Incorrect switch we ae I setting results in Su unreliable readings Yes but no equipment y damage Only DN Adjust Linearization ength X No Parameter 1 gt compensated for See Analog Input Al s i Object Engineering NS DOM S error LED off and No Troubleshoot DCM is N2 polling and See DCM 40 gt responding Technical Bulletin v Yes LT RTD Only No Troubleshoot open line lt Neitherlinein gt See Testing For An m open state lt Open Line Yes SS Use DVM to Troubleshoot device lt check field device input gt Ve connestions and wiring 2 0 an GE y Yes lt Replace IAN oo No Troubleshoot backplane lt lt Does replacement gt gt connections See NCU NEU P gt OX TAN FM workin lt Technical Bulletin as X slot lt pe Replace bad FM Refer to Material Return and Allowance Program Procedure 3C2700 for information on returning defective FMs iants Figure 5 IAN Troubleshooting 10 Function Modules Input Analog Function Module 101 Ordering uuormation Product Code Number IAN Function Module FM IAN101 0 There is no replacement part to the IAN FM Function Modules Input Analog Function Module 101 11 J HNSON
8. nalog signal to the DCM140 The DCM 140 receives the analog signals and converts them to a digital value which is entered in the data file for the point object associated with the field device input Base Frame IAN Field Signal __ Front FM poe Fie 4 Conditioning Panel Analog DCM X oe and Current Switch Voltage 140 9 Limiting Selects Output Field Devices Volt RTD Device Figure 1 IAN Function Diagram Function Modules Input Analog Function Module 101 3 Design Considerations Timing Considerations The IAN must connect to a DCM140 which is communicating to an NCM200 or higher loaded with Release 5 02 or later software The IAN accepts up to two analog signals one or two 0 to 10 VDC inputs one or two 1000 ohm RTD inputs The channels are independent but both must be of the same type either voltage or RTD input An IAN does not accept a voltage input in one channel and an RTD input in the other Each input signal of the IAN can read a current signal by attaching a resistor as shown under Applications Wiring Diagrams RTDs can only be connected via 2 wire A 4 wire connection is not available A shorted RTD device does not affect the reliability of the second signal However an open RTD line causes both channels to go unreliable If the IAN has only one RTD device connected the other side must be shorted The IAN has a fixed offset th
9. the FM e RTD applications only Compensate for line length and wire gauge resistance if needed See the Line Compensation RTD Only section on the next page e Verify the device performance Note A shorted RTD device does not affect the reliability of the second signal However an open RTD line causes both channels to go unreliable Zf the IAN has only one RTD device connected the other side must be shorted See Troubleshooting Procedures for a test The following procedure for the physical installation of the Input Analog IAN Function Module assumes e Panel NCU or NEU modules are installed complete with NCM200 or later and Operator Workstation software Release 5 02 or later e Connections to field devices are complete and follow NEC and local codes e You have engineering drawings defining details for the installation e You are familiar with Metasys Network terminology and the location and operation of power switches For each IAN Function Module in the network perform the following steps Note The IAN can be installed while power to the base frame is On 1 Set the Voltage RTD switch on the IAN as specified in the engineering drawings See the Application Wiring Diagrams section for an explanation 2 Refer to the engineering drawings and identify the proper panel and slot number location for this module 3 Install and latch the module in the appropriate slot by plugging it into the base frame
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