Installation Bulletin: IR420-D4
Contents
1. 74 BENDER The Power in Electrical Safety This document is intended as a reference guide for installing and using a BENDER IR420 D4 ground fault detector This document includes installation setup and usage instructions For complete de tails including installation setup settings and troubleshooting refer to the IR420 D4 user manual document number TBP101012 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 IR420 D4 series devices may be DIN rail mounted or screw mounted using the black clips lo cated on the top and bottom of the device Screw mounting requires an extra black clip article number B98060008 sold separately Wiring General The IR420 D4 monitors a single phase AC ungrounded system Refer to Figure 1 for wiring diagram Use mini mum AWG 24 maximum AWG 12 size wire Refer to IR420 D4 series user manual for complete technical de tails DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH e Disconnect all power before servicing Observe all local state2. and national codes standards and regulations 1 External supply voltage 5A fuse required for internal device pro tection Use two fuses when pow ering device with ungrounded power Equipment ground connections Connections to monitored system Alarm relay K1 SPDT contact Alarm relay K2 SPDT contact aS a Se E Connection for optional external test reset input Figure 1 IR420 D4 wiring diagram 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 For changing the energized state of the contact refer to Figure 6 Contact operation on the reverse side of this document The factory default for relays K1 and K2 is normally deenergized operation Device Relay Conditions Relay Operation Setting Normally deenergized mode N D Non failsafe mode N O in device settings menu Energized in the alarm state Relay will switch when the alarm is activated Normally energized mode N E Failsafe mode N C in device settings menu Energized in the normal state Relay will switch when the alarm is activated or when supply voltage to the device is lost Bender Inc e 800 356 4266 610 383 9200 e Device Alarm State Power ON normal state no alarms Power OFF Power ON alarm state P
3. d features and settings in the IR420 D4 s main menu Not all available features are listed in this document For more information consult the IR420 D4 user manual Menu Legend wW DOWN ARROW button lt 1 55 Momuntary button push a UP ARROW button gt 1 55 Hold button for at least 1 5 s then release 4l i MENU ENTER button Document NAE1018090 05 2012 e Benderlnc e Page 1 1 e Side 1 2 74 BENDER The Power in Electrical Safety Figure 4 Setting alarm trip values The IR420 D4 monitors for ground faults by measuring the system s insulation resistance Alarm values are set in kQ R2 is the main alarm A prealarm value R1 may also be set to give advanced notification IR420 D4 Installation Bulletin Reference Guide Figure 6 Contact operation Use this option to change the behavior of the contacts between normally deenergized non failsafe mode and normally energized failsafe mode The two SPDT contacts may be changed individually Note that the IR420 D4 labels normally deenergized operation as N O and nor mally energized operation as N C utilzing a normally open or normally closed contact only depends on which contact output is wired R 1 gt 1 ATF ua 5 P 1 J 6 p gt 1 5 sec 9 99 ve Failsafe R 1 ON OFF Select 2 3 pr 6 Q 2 7 lt 1 5 sec z 9 3 u Lik 2 R 2 3 m1 7 Lik 2 Prealarm value Skip steps 4 ANEA Main alarm value change Fol
4. low steps 4 otherwise through 6 to 9 adjust setpoint A 9 if desired lt 1 5 sec r9 x2 Toquit R1 gt 1 5 sec 4 0 gt 10 gt 4M 8 r HH MQ 9 9 Setpoint Adjustment C Flashing Symbol C Flashing Symbol Figure 5 Latching behavior fault memory Changing this setting to ON will cause the IR420 D4 to latch in the event of an alarm and re quire a manual reset if the alarm clears Changing this setting to OFF will cause the IR420 D4 to automatically reset if the alarm clears Technical Data Refer to IR420 D4 series user manual document TBP101012 or IR420 D4 series datasheet document NAE1012090 for detailed technical information 1 gt Fl cus gt 1 5 sec 2 gt 1 5 sec 9 gt HF cs C Flashing Symbol Fault Memory ON OFF Select Bender Inc 800 356 4266 610 383 9200 info bender org www bender org Document NAE1018090 05 2012 e Benderlnc e Page 1 1 Side 2 2
5. ower ON normal state no alarms Power OFF Power ON alarm state info bender org e www bender org K1 STATE 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 K2 STATE 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 IR420 D4 Installation Bulletin Reference Guide Front Panel Display 4 Figure 2 IR420 D4 front display 1 LED ON green IIluminates when 5 TEST UP button Activates self test power is applied to the device Flashes scrolls up inside main menu when the connection alarm is active 6 RESET DOWN button Resets device scrolls down inside main menu MENU ENTER button Activates main menu Confirms momuntary push or goes back a step held gt 1 5 s inside 2 LED AL1 yellow Illuminates when the prealarm is activated Flashes when 7 the connection alarm is active 3 LED AL2 yellow IIluminates when the main alarm is activated Flashes main menu when CT connection alarm is active 4 LCD display Dimensions Dimensions in inches mm 2 76 70 5 1 42 36 1 22 31 1 Menu Flow Chart for Common Settings Figure 4 through figure on the reverse side of this document contain flow charts for modifying commonly use
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