Bender IR420-D4 Series Installation Bulletin

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.
6
3 2
4
5
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 Device Alarm State
Normally deenergized mode (N/D) Power ON, normal state (no alarms)
Non-failsafe mode
"N/O" in device settings menu
Power OFF
Energized in the alarm state
Relay will switch when the alarm is
activated.
Power ON, alarm state
Normally energized mode (N/E)
Power ON, normal state (no alarms)
Failsafe mode
"N/C" in device settings menu
Energized in the normal state Power OFF
Relay will switch when the alarm is
activated, or when supply voltage
Power ON, alarm state
to the device is lost.
Bender Inc. • 800.356.4266 / 610.383.9200 • info@bender.org • www.bender.org
T M
! DANGER
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
• Disconnect all power before servicing.
• Observe all local, state, and national
codes, standards, and regulations.
1
1. External supply voltage; 5A fuse
required for internal device pro-
tection (Use two fuses when pow-
ering device with ungrounded
power)
2. Equipment ground connections
3. Connections to monitored system
4. Alarm relay K1: SPDT contact
5. Alarm relay K2: SPDT contact
6. Connection for optional external
test/reset input
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
Front Panel Display
1. LED "ON" (green): Illuminates when
power is applied to the device. Flashes
when the connection alarm is active.
2. LED "AL1" (yellow): Illuminates when
the prealarm is activated. Flashes when
the connection alarm is active.
3. LED "AL2" (yellow): Illuminates when
the main alarm is activated. Flashes
when CT connection alarm is active.
4. LCD display
Dimensions
Dimensions in inches (mm).
K2 STATE
Menu Flow Chart for Common Settings
21-22 CLOSED
21-24 OPEN
Figure 4 through figure on the reverse side of this document contain flow charts for modifying
commonly used features and settings in the IR420-D4's main menu. Not all available features
21-22 CLOSED
are listed in this document. For more information, consult the IR420-D4 user manual.
21-24 OPEN
Menu Legend
21-22 OPEN
21-24 CLOSED
DOWN ARROW button
21-22 OPEN
R
21-24 CLOSED
UP ARROW button
21-22 CLOSED
T
21-24 OPEN
MENU / ENTER button
21-22 CLOSED
21-24 OPEN
Installation Bulletin / Reference Guide
1 2 3
4
5 6 7
Figure 2 - IR420-D4 front display
5. TEST / UP button: Activates self-test /
scrolls up inside main menu.
6. RESET / DOWN button: Resets device /
scrolls down inside main menu.
7. MENU / ENTER button: Activates main
menu / Confirms (momuntary push) or
goes back a step (held > 1.5 s) inside
main menu.
2.78"
(70.5)
1.87"
1.42" (36)
(47.5)
1.22" (31.1)
< 1.5 s
> 1.5 s
Document NAE1018090 • 05.2012 • © Bender Inc. • Page 1/1 • Side 1/2
IR420-D4
Momuntary button push
Hold button for at least 1.5 s,
then release