Output Analog Isolated Function Module
Contents
1. to 20 mA 25 mA maximum 4VDC to 30 VDC External power supply Output Limits 40 mA Maximum 910 ohm maximum load including line resistance Output Protection Fused at 500 mA with a non field replaceable fuse Output Isolation 350V minimum isolation between output and analog supplies and output and DCM electronics Input Output Linear analog output proportional to digital input value Characteristics 0 1 of full range 0 4 of full scale output at 70 2 F 21 1 1 C Thermal Effects Gain Drift 0 0055 per F 0 01 per C of full scale deviation Offset Drift 0 0055 per F 0 01 per C of full scale deviation Calibration The module is factory calibrated Default Condition Output 0 VDC onloss Output 0 mA on loss Output 0 mA on loss of input power of input power of input power Power is from the PWR in the NCU NEU External power Operating 32 to 122 F 0 to 50 C Environmental 10 to 90 noncondensing relative humidity Requirements 86 F 30 C maximum dew point Storage Shipping 40 to 158 F 40 to 70 C Environmental 5 to 95 noncondensing relative humidity Requirements 86 F 30 C maximum dew point 0 85 in H x 3 06 in W x 7 0 in L 2 2 cmH x 7 8 cm W x 17 8 cm L Weight 0 5 Ib 0 22 kg Agency Compliance FCC Part 15 Subpart Class A UL 916 CSA C22 2 No 205 Agency Listings UL Listed and CSA Certified as part of Metasys 6 Function Modules Output Analog Isolated Function Mo2. Metasys Network Technical Manual 636 Function Modules Section METASYS Technical Bulletin 0793 Issue Date Output Analog Isolated Function Module Introduction Page 3 e Description 3 e Application 4 e Capabilities 4 e Theory of Operation 5 e Specifications 6 Installation Procedures 7 e General Information 7 e Physical Installation 7 e Current Source 0 to 20 mA 8 e Voltage Source 0 to 10 volts 9 e Current Control 0 to 20 mA 10 Commissioning Procedures 11 e Physical Verification 11 e Software Verification 11 Troubleshooting Procedures 13 e Troubleshooting Chart 13 e Ordering Information 15 1993 ohnson Controls Inc 1 Order No 636 043 2 Function Modules Output Analog Isolated Function Module Description Introduction The Output Analog Isolated OAI Function Module is an isolated interface between the DCM and field devices It is used whenever a connected field device has an internal ground reference that would interfere with the operation of an OAE Function Module The OAI may be configured to source isolated analog output voltage 0 10 VDC source isolated analog output current 0 20 mA or modulate isolated current 0 20 mA for externally powered devices The OAI Function Module features e digital to analog converter for converting DCM digital input into isolated analog output e Auto Manual A M switch to enable disable DCM control e manual set potentiometer for manual output control C
3. W increases output e optical isolation from DCM electronics e feedback indication of the Auto Manual switch setting to the DCM For non isolated analog outputs use the OAE Function Module The OAI Function Module plugs into any one of the bottom ten slots associated with the DCM Figure 1 shows typical function module locations in the NCU A five slot panel is pictured Output FMs DCMs Figure 1 OAI Function Module Locations Function Modules Output Analog Isolated Function Module 3 Application The OAI Function Module is typically used to e control a variable speed motor controller e provide a current control 0 to 20 mA for use with an external current source Capabilities Table 1 Function Module Capabilities Input from DCM DCM inputs a digital command Allows DCM to provide automatic control of outputs Auto Manual Switch and Switch selects one of Allows for manual override of Manual Adjustment Auto DCM control of outputs DCM control for special situations Manual DCM control disabled and output is controlled by Allows for local manual control manual adjustment even if the DCM is not present Power on Reset At low power or after power up Provides controlled restart output goes to zero in Auto mode Output to Field Module outputs an isolated Provides proportional control voltage or current signal signals for motor driven actuators proport
4. containing this object Ses gt Exit displaying correct values lt No D fe Pg Is NS S Point Ke No Fix definition a _ object definition gt gt See Operator Workstation nS KR User s Manual s SDCM N etor LED off and N No Troubleshoot DCM SY is N2 polling and A gt See DCM 101 Technical responding X ge Bulletin a No lt a Is m lt external power D required lt Yes Pa here Repair or replace if o supply OK JCI is responsible e Replace FM AN See Ordering Information for Using ordering information Refer A i SS gt N to Material Return and Pa SNe No lt DVM dee FM we gt Allowance Program gt Sel ae Procedure 3C2700 for O Ja information on returning defective FMs Yes a Using a Nio No Troubleshoot lt DVM check input gt gt connections gt to field device lt and wirin NOK 7 g ve Repair or replace field k device if JCI is responsible oaiflow Figure 6 OAI Troubleshooting 14 Function Modules Output Analog Isolated Function Module Ordering Table 3 Code Number Information Product Code Number Function Modules Output Analog Isolated Function Module 15 JRQHNSON CONTRELS Controls Group 507 E Michigan Street P O Box 423 Milwaukee WI 53201 16 Function Modules Output Analog Isolated Function Module Notes FAN 636 Metasys Network Technical Manual Revision Date 0793 Printed in U S A
5. dule General Information Physical Installation Assumptions Procedure Installation Procedures When installing and connecting function modules e follow NEC and local codes e observe maximums as specified in the specification table and in these installation guidelines The following procedure for the physical installation of the OAI Function Module assumes e NCU NEU panel is installed e Connections to field devices are complete 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 OAI Function Module in the network perform the following steps 1 Set the Auto Manual switch to Manual 2 Adjust output to minimum 3 Refer to the engineering drawings and identify the proper panel and slot number location for this module 4 Open the latch Insert the module in the appropriate slot 6 Close the latch locking function module in place Function Modules Output Analog Isolated Function Module 7 Current Source Figure 3 diagrams the wiring for current source 0 to 20 mA applications 0 to 20 mA using the OAI Function Module 250 ft max OAI TBF lt No 18 AWG gt twisted pair f 1 Dy Control n a T DCM r gt Electronics Signal POA uta Conditioner Field and Manual variable Device Isolation e Current a a Manual sat Sourc
6. e naar Adjustment OH eae ae Connection to DCM completed through internal connector on end of function module ee TBF in left bay of NCU NEU TBF in right bay of NCU NEU N Strip wire and insert in side face of TBF Use N set screw in front face to secure rs y a Optional for OAI Shield may be required by the field device for noise immunity See individual manufacturer s specification sheet oaiwire Figure 3 Wiring for Current Source Applications 8 Function Modules Output Analog Isolated Function Module Voltage Source Figure 4 diagrams the wiring for voltage source 0 to 10 volts 0 to 10 volts applications using the OAI Function Module 250 ft max OAI TBF No 18 AWG gt twisted pair 4 a Control Signal 4 DCM r gt Electronics POA to and Conditioner i Variable 3 Field Isolation Manual Current 1 Device IRE e Manual tise Source PER Z A Adjustment g GH Optional je i Connection to DCM J Optional for OAI completed through f M Shield may be required by the internal connector TBF in left bay TBF in right bay P field device for noise immunity on end of function of NCU NEU of NCU NEU SX See individual manufacturer s module specification sheet Strip wire and insert in side face of TBF Use set screw in front face to secure oaiwire Figure 4 Wiring for Voltage Source Applications Functio
7. etwork perform the following steps 1 Power up the appropriate DCM power supply 2 Adjust the manual control on the function module and verify that the intended device responds and that the response is appropriate The following procedure for the software verification of the OAI Function Module assumes e Physical installation at the NCU NEU panel is complete including NCM DCM FM etc e The operating software for the network has been downloaded to the NCM controlling the panel e An Operator Workstation is available For each OAI Function Module in the network perform the following steps 1 Select the System summary that includes this OAI object 2 Set Auto Manual switch on the OAI to Auto 3 Use the software override command and verify that the object s value attribute as seen in the Summary matches the actual value for the field device Function Modules Output Analog Isolated Function Module 11 12 Function Modules Output Analog Isolated Function Module Troubleshooting Chart Troubleshooting Procedures Use the diagram in Figure 6 next page as a troubleshooting guide It applies for failures between point objects and field devices connected through an OAI Function Module Function Modules Output Analog Isolated Function Module 13 l Sat a 18 the J Summary S lt lt
8. ional to input signal or variable speed controllers 4 Function Modules Output Analog Isolated Function Module Theory of Operation DCM Control Signal Current opr i igna lt wo Auto S Electronics Conditioner igi ource and Manual Voltage Isolation Source Field Manual EEN or Device Adjustment Current Control Oo oail01 Figure 2 OAI Function Diagram The process is e The DCM provides a digital control signal e The control electronics in the OAT latch the digital control signal then convert it to an isolated proportional analog signal e Depending on how the OAI is wired this isolated analog signal is a current source voltage source or will modulate externally sourced current e A manually controlled Auto Manual switch can disable the DCM control of the OAI outputs The status of this switch is reported back to the DCM e With the Auto Manual switch in the Manual position the module output is controlled by a manual adjustment on the OAI CW increases the output The unit will operate in the Manual mode without the DCM present The corresponding power supply must be present Function Modules Output Analog Isolated Function Module 5 Specifications Table 2 OAI Function Module Specifications Specifications for Configurations Category Voltage Source Current Source Current Control Product Code Number FM OAI101 Output Range 0to10V 0 to 20 mA 0
9. n Modules Output Analog Isolated Function Module 9 Current Control Figure 5 diagrams the wiring for current control 0 to 20 mA applications 0 to 20 mA using the OAI Function Module 250 ft max OAI TBF No 18 AWG gt twisted pair p gt en St Control Signal 2 T Externally DCM r gt Electronics j gt PO Auto _ Powered ari onditioner l J Field f Isolation oe us a Device ay Manual las ona 4t0 30 ff Adjustment K 3y oe G o Sa 4 N Connection to DCM eas SS J Optional for OAI completed through Pcs M Shield may be required by the internal connector _ TBF in left bay TBF in right bay field device for noise immunity on end of function ra of NCU NEU of NCU NEU See individual manufacturer s module specification sheet N Strip wire and insert in side face of TBF Use N set screw in front face to secure Be r p oaiwire Figure 5 Wiring for Current Control Applications 10 Function Modules Output Analog Isolated Function Module Physical Verification Assumptions Procedure Software Verification Assumptions Procedure Commissioning Procedures The following procedure for the physical verification of the OAI Function Module assumes e Physical installation at the NCU NEU and PWR panel is complete e Power is available at the panel power supply and at the field device For each OAI Function Module in the n
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