CHAPTER 5: SETTINGS PRODUCT SETUP
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-109
5
Figure 5-47: LED test sequence
Application example 1
Assume one needs to check if any of the LEDs is “burned” through user-programmable pushbutton 1. Apply the following
settings.
Configure user-programmable pushbutton 1 by making the following entries in the
SETTINGS PRODUCT SETUP USER-
PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1
menu. (The option does not display when not purchased.)
PUSHBUTTON 1 FUNCTION: “Self-reset”
PUSHBTN 1 DROP-OUT TIME: “0.10 s”
Configure the LED test to recognize user-programmable pushbutton 1 by making the following entries in the
SETTINGS
PRODUCT SETUP USER-PROGRAMMABLE LEDS LED TEST
menu:
LED TEST FUNCTION: “Enabled”
LED TEST CONTROL: “PUSHBUTTON 1 ON”
The test is initiated when the user-programmable pushbutton 1 is pressed. Keep the pushbutton pressed for as long as the
LEDs are being visually inspected. When finished, release the pushbutton. The relay then automatically starts stage 2. At
this point, test can be cancelled by pressing the pushbutton.
Application example 2
Assume one needs to check if any LEDs are “burned” as well as exercise one LED at a time to check for other failures. This
is to be performed via user-programmable pushbutton 1.
After applying the settings in application example 1, hold down the pushbutton as long as necessary to test all LEDs. When
finished, release the pushbutton so that the relay then automatically starts stage 2. When stage 2 is completed, stage 3
starts automatically. The test can be cancelled at any time by pressing the pushbutton.
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