isoLR275 / AGH-LR
Contents
1. 3 3 AC System W N N f 1 P E AGH LR i a Q Q Q Q A1 A2 KE ISOLR275 AGH LR Installation Bulletin Reference Guide Wiring Multiple isoPV Devices in Arrays with a Common Bus Only one isoLR275 detector at a time may be online and measuring in a complete isolated system Circuits connected to a common bus which may or may not be connected simultane ously require special connections in order to ensure that only one device is on at a time These requirements may be accomplished in one of two ways e Option 1 Connecting each device s F1 F2 standby terminals and manually controlling the switching with control logic e Option 2 Automating the switching by connecting each device together via RS 485 For option 1 closing the F1 F2 terminal set puts the device into standby mode Using control logic from the tiebreaker will allow for manual control to ensure that only one device is on when the tiebreaker is closed Option 2 automates the process Complete the following steps 1 Connect each isoLR275 in series with each other via the A and B terminals Use RS 485 cable 2 The devices at the beginning and the end of the chain require activating the termination resistor Switch the Ron DIP switch to ON 3 Each device requires a unique communication address Under the menu option COM SETUP gt Addr set one device to address 1 Set the address for each other device seque2. 74 BENDER The Power in Electrical Safety This document is intended as a reference guide for installing and using a BENDER isoLR275 ground fault detector and AGH LR voltage coupler for ungrounded low resistance systems This document includes installation setup and usage instructions For complete details including installation setup settings and troubleshooting refer to the isoLR275 user manual document number TGH1468en This document is intended as a supplement and not a replacement to the complete user manual Only qualified maintenance personnel shall operate or service this equipment These instructions should not be viewed as sufficient for those who are not otherwise qualified to operate or service this equipment This document is intended to provide accurate information only No responsibility is as sumed by BENDER for any consequences arising from use of this document Installation Mounting The isoLR275 and AGH LR are designed for DIN rail mounting See reverse side for dimensions Wiring General See figure 1 for basic wiring schematic Use of the AGH LR voltage coupler is required Use minimum AWG 24 maximum AWG 12 wire For more information refer to the isoLR275 user manual N DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH e Disconnect all power before servicing Observe all local state and national codes standards and regulations 2 4 3 AC System W O N 19 AC System PRAE aL
3. 9200 info bender org Canada 800 243 2438 905 602 9990 info bender ca com Normally energized mode N E Failsafe mode N C in device settings menu External TEST terminal N O contact External RESET terminal N O contact STANDBY terminals Closing F1 F2 will stop measurements Analog outputs 0 400 uA on standard version 0 4 20 mA on B version RS 485 interface Alarm relay K1 SPDT contact Alarm relay K2 SPDT contact e www bender org Power ON normal state no alarms Power OFF Power ON alarm state Power ON normal state no alarms Power OFF Power ON alarm state Document NAE1018110 e 10 2012 11 12 CLOSED 11 14 OPEN 11 12 CLOSED 11 14 OPEN 11 12 OPEN 11 14 CLOSED 11 12 OPEN 11 14 CLOSED 11 12 CLOSED 11 14 OPEN 11 12 CLOSED 11 14 OPEN Bender Inc 21 22 CLOSED 21 24 OPEN 21 22 CLOSED 21 24 OPEN 21 22 OPEN 21 24 CLOSED 21 22 OPEN 21 24 CLOSED 21 22 CLOSED 21 24 OPEN 21 22 CLOSED 21 24 OPEN Page 1 1 Side 1 2 74 BENDER The Power in Electrical Safety Menu Structure Flow Chart Figure 5 shows the structure of the menu built into the isoPV The menu is used for viewing alarms viewing the status of the system and making any necessary settings changes Use the supplied gray boxes to take note of applied settings for future reference Note that some settings do not have more than one selectable option these are speci
4. al options tuned specifically for low resistance ungrounded systems Menu or settings option Settings option essential for proper operation 1 EXIT 2 Alarm1 3 Alarm2 4 K1 A p N Memory 7 M M 7 M M Ri 2 AGH 3 Ce max 4 Measure 5 Autotest 6 Clock 7 Date 8 Test 2 Addr 3 ISONet 4 ISO Monitor 2 Password 3 Status 2 Text 8 SERVICE 200 Q 100 KQ 200 Q 100 kQ N O T N C T N C N O Flash N O T N C T N C N O Flash on off 0 20 mA 4 20 mA 28kQ 120kQ PV 150uF 500uF DC AMP AMP2 AMP3 AMP4 24 no 01 00 00 dd mm yy 00 00 23 00 on off 000 999 on off English Deutsch Figure 2 isoLR275 menu flow chart Dimensions Dimensions in inches mm 4 4 112 5 support for screw mounting 0 18 ONMIODIODOT OOM NOO Figure 3 isoLR275 dimensions in inches mm Bender Inc e USA 800 356 4266 610 383 9200 info bender org 0 2 4 4 111 2 4 60 3 6 91 Terminal cover bm mounting 0 22 5 5 Figure 4 AGH LR dimensions in inches mm e Canada 800 243 2438 905 602 9990 info bender ca com www bender org ISOLR275 AGH LR Installation Bulletin Reference Guide Front Panel Display WZ BENDER isoLR275 ISOMETER 1T SYSTEM R 086kQ f H 1 INFO ESC key Displays system infor mation goes back a step in menu 2 TEST UP key Ini
5. ble in the main menu under ISO SETUP gt M M Under menu option ISO SETUP gt M M Ri the midpoint of the equation may be set to 28 kQ or 120 kQ When using an externally connected analog meter ensure the midpoint setting is the same as the external meter For integrating into control systems use the midpoint value appropriate for the system s requirements 0 20 mA output R 20 mA xR i 4 20 mA output 16MAXR Re __ R 4 mA Ordering Information Ordering Information Part No System Voltage isoLR275 327 3 N ACO 793 V and AGH LR 3 DCO 1100 V isoLR275 335 3 N ACO 793 V and AGH LR 3 DCO 1100 V Technical Data R Insulation resistance in kQ Current output in mA R Midpoint setting R Insulation resistance in kQ Current output in mA R Midpoint setting Supply Voltage DCT DRT Ordering No B 9106 5702W AC 88 264 DC77 286V B 9106 5703W Refer to isoLR275 series user manual document TGH1468en or isoLR275 series datasheet document NAE1012110 for detailed technical information Document NAE1018110 10 2012 e Benderlnc e Page1 1 e Side 2 2
6. n tially Each address must be unique 4 For each device under the menu option COM SETUP gt ISONet set this option to ON This setting automates the process of ensuring only one device is measuring at any time See the reverse side of this document for more information on menu settings Wiring Contacts Using a normally closed or normally open contact utilizes two factors wiring out of the proper terminal and setting the respective contact to normally energized or deenergized operation Refer to the chart below for relay conditions The energized state of the contact may be changed by setting options ISO SETUP gt K1 and ISO SETUP gt K2 In the device s settings option N O refers to normally deenergized and option N C refers to normally energized Device Relay Conditions Relay Operation Setting Device Alarm State K1 STATE K2 STATE ISOLR275 T1 T2 R1 R2 F1 F2 M M A B Fo te ALS 11 12 14 21 22 24 Normally deenergized mode N D Non failsafe mode N O in device settings menu Figure 1 isoLR275 and AGH LR wiring diagram 1 External supply voltage 6A fuse recom mended for internal device protection 2 Connection to three phase AC system without neutral 3 Connection to three phase AC system with neutral 4 Connection to single phase AC system 5 Connection to DC system Equipment ground connection Bender Inc li 8 10 11 12 13 USA 800 356 4266 610 383
7. tiates self test moves up in menu 3 RESET DOWN key Resets device when latching mode is active moves down in menu 4 MENU ENTER key Opens the main menu confirms changes in menu Device Setup Tips LED ALARM 1 IIluminates when alarm 1 is active LED ALARM 2 IIluminates when alarm 2 is active LED ERROR Illuminates when a device error has occured Ensure that all menu options in red in the menu structure flow chart are set correctly Incorrect settings may lead to improper readings For alarm trip values use the factory defaults when possible The optimal measuring principle under menu option ISO ADVANCED gt Measure has been factory set for large low resistance ungrounded systems Refer to isoLR275 user manual for more information on this setting Options ISO SETUP gt K1 and ISO SETUP gt K2 refer to the energized state of the output relays K1 and K2 during operation Refer to the section Wiring Contacts on the re verse side of this document for more information The menu options stand for e N C Normally energized operation failsafe mode e N O Normally deenergized operation nonfailsafe mode e N C T Normally energized operation switches during self test e N O T Normally deenergized operation switches during self test Flash During alarm contact switches app every 2 seconds Analog Outputs IsoLR275 models feature a 0 20 mA or 4 20 mA output selecta
Download Pdf Manuals
Related Search