FP-RLY-420 FieldPoint Operating Instructions
Contents
1. Vsup COM 17 18 19 20 21 22 23 24 25 26 National Instruments Corp FP RLY 420 Table 2 Vsyp and COM Terminal Assignments Continued Vsup COM 27 28 29 30 31 32 UN Caution Cascading power between two modules defeats isolation between those modules Cascading power from the network module defeats all isolation between modules in the FieldPoint bank Connecting Loads to the FP RLY 420 Wire an external power supply to the load and the IC terminal of the individual channel as shown in Figure 3 Install a 3 A 250 V maximum fast acting fuse suitable for the load at the IC terminal to protect the module and the load from damage COM 250V max ree Cre Vsup i NO Sourcing i Load aC or i Cc _ SV AC 3A M FP RLY 420 Figure 3 Connecting a Load The FP RLY 420 has eight SPST electromechanical relays The power up state is off open to ensure safe installation In the ON state the NO and IC contacts connect to form a short circuit In the ON state there is an effective resistance of up to 150 mQ between the NO and IC terminals which causes a voltage drop For example if the current is 1 5 A the voltage drop across the NO and IC terminals can be as high as 0 225 V 1 At the end of relay life the path resistance rises rapidly above 1 Q FP RLY 420 4 ni com The amount of current the relay can2. initial configuration information to the cFP RLY 420 After the FP RLY 420 receives this initial information the green READY indicator lights and the module is in normal operating mode In addition to the green POWER and READY indicators each channel has a numbered green output state indicator that lights when the channel is in the ON state National Instruments Corp 5 FP RLY 420 Isolation and Safety Guidelines Caution Read the following information before attempting to connect the FP RLY 420 to any circuits that may contain hazardous voltages This section describes the isolation of the FP RLY 420 and its compliance with international safety standards The field wiring connections are isolated from the backplane and the inter module communication bus The isolation barriers in the module provide 250 Vims Measurement Category II continuous isolation verified by 2 300 Vms 5 s dielectric withstand test The FP RLY 420 provides double insulation compliant with IEC 61010 1 for working voltages of 250 Vims Safety standards such as those published by UL and IEC require the use of double insulation between hazardous voltages and any human accessible parts or circuits Never try to use any isolation product between human accessible parts such as DIN rails or monitoring stations and circuits that can be at hazardous potentials under normal conditions unless the product is specifically designed for such an application as is
3. the FP RLY 420 Even though the FP RLY 420 is designed to handle applications with hazardous potentials follow these guidelines to ensure a safe system e As with any hazardous voltage wiring make sure that all wiring and connections meet applicable electrical codes and commonsense practices Mount terminal bases and backplanes in an area position or cabinet that prevents accidental or unauthorized access to wiring that carries hazardous voltages e Do not use the FP RLY 420 as the only isolating barrier between human contact and working voltages higher than 250 Vime e When hazardous voltages are present on any channel all channels must be considered hazardous Ensure that external wiring and all circuits connected to the device are properly insulated from human contact Working voltage is defined as the signal voltage plus the common mode voltage Common mode voltage is the voltage of the module with respect to ground FP RLY 420 6 ni com e Operate the FP RLY 420 only at or below Pollution Degree 2 Pollution Degree 2 means that only nonconductive pollution occurs in most cases Occasionally however condensation can cause temporary conductivity e Donot operate FieldPoint products in an explosive atmosphere or where there may be flammable gases or fumes If you need to operate FieldPoint products in such an environment the FieldPoint products must be in a suitably rated enclosure e Operate the FP RLY 420 at or bel
4. 7 A2 2001 Table 1 CE C Tick and FCC Part 15 Class A Compliant CE Compliance This product meets the essential requirements of applicable European Directives as amended for CE marking as follows Low Voltage Directive safety 73 23 EEC Electromagnetic Compatibility Directive EMC ccccccsceeseesteeeeees 89 336 EEC 3 Note Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column FP RLY 420 10 ni com Where to Go for Support For more information about setting up the FieldPoint system refer to these National Instruments documents e FieldPoint network module user manual e Other FieldPoint I O module operating instructions e FieldPoint terminal base and connector block operating instructions Go to ni com support for the most current manuals examples and troubleshooting information National Instruments corporate headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and follow the calling instructions or dial 512 795 8248 For telephone support outside the United
5. At35 VDC iniiaiee 3 A at 40 to 55 C 1 5 A at 55 to 70 C At 40 VDC munissa 2 A at 40 to 55 C 1 5 A at 55 to 70 C At 60 VDC ii sicscedssscessaisasctiecaseis 1A At 120 VDC sic cissiscssenssatsassevsessins 0 4 A Minimum switching load 10 mA at 5 VDC Maximum switching power DC path resistance Trnitial oo ccc ccccecceseecesseeesseee 150 mQ End Of lifes isiessisssssscassecssses estssess 21Q ay Note DC path resistance typically remains low for the life of the relay At the end of relay life the path resistance rises rapidly above 1 Q Load ratings apply to relays used within the specification before the end of relay life Off state leakage At 250 VAC At 120 VDC Expected life Mechanical n se 2 X 107 operations min Electrical sessioissa 100 000 operations FP RLY 420 8 ni com Maximum switching frequency Mechanical 20 operations per second Electrical encenar 1 operation per second at maximum load Relay operate time eee eee 8 ms Relay release time eceeeeeeeeeee 4 ms Relay bounce time s s s 4 ms Contact material Gold plated silver cadmium oxide Physical Indicators n ee a eea ko Green POWER and READY indicators 8 green output state indicators Weigher nome kenna 164 g 5 8 oz Power Requirements Power from network module 1 W max Safety Isolation Voltage Isolation voltage is verified by a dielectric withstand test Channel to backplane
6. Continuous ossssseseseeeeeeseeeeserreessese 250 Vms Withstand 2 300 Vms 5 s max Channel to ground Continuous osssssesseeeeeseesesereeesse 250 Vims Withstand 2 300 Vms 5 S max Channel to channel eceeeeeeee No isolation Environmental FieldPoint modules are intended for indoor use only For outdoor use they must be mounted inside a sealed enclosure Operating temperature 40 to 70 C Storage temperature 55 to 85 C 1 System must be mounted upright Refer to Figure 2 for the proper system orientation National Instruments Corp 9 FP RLY 420 H midity sesionin 10 to 85 RH noncondensing Maximum altitude ccceeeeeeee 2 000 m at higher altitudes the isolation voltage ratings must be lowered Pollution Degree sses 2 Safety This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement control and laboratory use e IEC 61010 1 EN 61010 1 e UL61010 1 e CAN CSA C22 2 No 61010 1 For UL hazardous location and other safety certifications refer to the product label or visit ni com certification search by model number or product line and click the appropriate link in the Certification column Electromagnetic Compatibility EMiSSiONS ccccsccessscessseeesseeeesees EN 55011 Class A at 10 m FCC Part 15A above 1 GHz TIMIMUDIY scscsssasesscstassosscveesusatansseeseseest EN 61326 199
7. FieldPoint Operating Instructions FP RLY 420 Eight Channel SPST Relay Module These operating instructions describe how to install and use the National Instruments FP RLY 420 relay module revision 185151C 01 and later For information about installing and using earlier revisions of the FP RLY 420 refer to document number 321904B 01 Earlier revisions of the FP RLY 420 display the following symbol on the module label For information about configuring and accessing the FP RLY 420 over a network refer to the user manual for the FieldPoint network module you are using Features The FP RLY 420 is a FieldPoint relay output module with the following features Eight single pole single throw SPST relay channels e Switches up to 3 A at 35 VDC or 250 VAC e 40 to 70 C operation e 250 Vim CAT H continuous channel to ground isolation verified by 2 300 Vins 5 s dielectric withstand test e Hot swappable Installing the FP RLY 420 The FP RLY 420 mounts on a FieldPoint terminal base FP TB x which provides operating power to the module Installing the FP RLY 420 onto a powered terminal base does not disrupt the operation of the bank WwW NATIONAL INSTRUMENTS To install the FP RLY 420 refer to Figure 1 and complete the following steps 1 Slide the terminal base key to either position X used for any module or position 1 used for the FP RLY 420 module 2 Align the FP RLY 420 alignment slots with the g
8. States contact your local branch office Australia 1800 300 800 Austria 43 0 662 45 79 90 0 Belgium 32 0 2 757 00 20 Brazil 55 11 3262 3599 Canada 800 433 3488 China 86 21 6555 7838 Czech Republic 420 224 235 774 Denmark 45 45 76 26 00 Finland 385 0 9 725 725 11 France 33 0 1 48 14 24 24 Germany 49 0 89 741 31 30 India 91 80 51190000 Israel 972 0 3 6393737 Italy 39 02 413091 Japan 81 3 5472 2970 Korea 82 02 3451 3400 Lebanon 961 0 1 33 28 28 Malaysia 1800 887710 Mexico 01 800 010 0793 Netherlands 31 0 348 433 466 New Zealand 0800 553 322 Norway 47 0 66 90 76 60 Poland 48 22 3390150 Portugal 351 210 311 210 Russia 7 095 783 68 51 Singapore 1800 226 5886 Slovenia 386 3 425 4200 South Africa 27 0 11 805 8197 Spain 34 91 640 0085 Sweden 46 0 8 587 895 00 Switzerland 41 56 200 51 51 Taiwan 886 02 2377 2222 Thailand 662 278 6777 United Kingdom 44 0 1635 523545 National Instruments Corp 11 FP RLY 420 National Instruments NI ni com and LabVIEW are trademarks of National Instruments Corporation Refer to the Terms of Use section on ni com 1egal for more information about National Instruments trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD orni com patents 2005 National Instrum
9. ents Corp All rights reserved 374221A 01 Oct05
10. ow Measurement Category II Measurement Category II is for measurements performed on circuits directly connected to the low voltage installation This category refers to local level distribution such as that provided by a standard wall outlet Do not use this module with voltages in Measurement Categories IN or IV Using This Product Safely in Hazardous Locations This product is suitable for use in U S and Canada Class I Division 2 Groups A B C D T4 hazardous locations and nonhazardous locations Cautions Explosion hazard Substitution of components may impair suitability for Class I Division 2 Explosion hazard Do not disconnect equipment unless power has been switched off or the area is known to be nonhazardous Equipment must be used within its electrical and environmental ratings Refer to the Specifications section Refer to the product label for manufacturing location This product must be installed in an enclosure rated at least IP 54 National Instruments Corp 7 FP RLY 420 Specifications The following specifications are typical for a range of 40 to 70 C unless otherwise noted All specifications are subject to change without notice Relay Characteristics Number of channels c00006 8 Relay ty pewicsccissstssstsiisvasaseccavuains SPST nonlatching normally open Maximum switching capacity resistive load At 250 VAO eripias 3 A at 40 to 55 C 1 5 A at 55 to 70 C
11. switch depends on the voltage the type of load and the ambient temperature Refer to the Specifications section for more information Protecting Contacts for Inductive Loads When an inductive load is connected to a relay the energy stored in the inductive load can produce a large counter electromotive force when the relay switches This flyback voltage can severely damage the relay contacts and greatly shorten the life of the relay It is best to limit flyback voltages by installing a flyback diode across an inductive DC load or a metal oxide varistor MOV across an inductive AC load The FP RLY 420 has internal protection MOVs to prevent excessively high voltage from being applied across the contacts The MOVs are located between the NO and IC contacts of each relay However National Instruments recommends installing protection circuits across inductive loads The flyback protection causes a small leakage current which is detailed in the Specifications section Refer to the NI Switches Help for information about selecting and installing contact protection circuits Go to ni com manuals search for switches help and select the current version of the NI Switches Help Status Indicators After you install the FP RLY 420 onto a backplane and apply power to the network module the green POWER indicator lights and the FP RLY 420 informs the network module of its presence When the network module recognizes the FP RLY 420 it sends
12. uide rails on the terminal base 3 Press firmly to seat the FP RLY 420 on the terminal base When the module is firmly seated the terminal base latch locks it into place 1 1 0 Module 3 Alignment Slot 5 Latch 2 Terminal Base 4 Key 6 Guide Rails Figure 1 Installing the FP RLY 420 Mounting the System Upright To ensure maximum cooling efficiency mount the FieldPoint system so that the I O module vents are at the top as shown in Figure 2 Figure 2 Mounting the System Upright FP RLY 420 2 ni com Wiring the FP RLY 420 The FP TB x terminal base has connections for each of the eight relay channels Each relay channel has two terminals NO and IC A Caution Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local electrical standards A hazardous voltage is a voltage greater than 42 4 V peak or 60 VDC Table 1 lists the terminal assignments for the signals of each channel Table 1 Terminal Assignments Terminal Numbers Channel NO IC 0 1 2 1 3 4 2 5 6 3 7 8 4 9 10 5 11 12 6 13 14 7 15 16 All of the COM terminals are connected internally and all of the Vsup terminals are connected internally NI does not recommend using the Vsyp and COM terminals with the FP RLY 420 Table 2 Vsyp and COM Terminal Assignments
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