Of trip, Of trip -5 – Basler Electric BE1-87T User Manual

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9171300990 Rev V

BE1-87T Functional Description

3-5

NOTE

Prior to September 2007, the BE1-87T target indicators consisted of

magnetically latched, disc indicators. These mechanically latched target

indicators have been replaced by the electronically latched LED targets in use

today.

% of Trip

When the % of trip pushbutton Q is pushed, eight LEDs, shown in Figure 2-5, are used to indicate the

percentage of operating current to: Minimum pickup (LED M also lights); or Slope characteristic pickup

(LED S also lights). The eight LEDs represent the following percentages:

1 LED:

3% (Yellow LED)

2 LEDs:

7% (Yellow LED)

3 LEDs:

11% (Yellow LED)

4 LEDs:

20% (Red LED)

5 LEDs:

40% (Red LED)

6 LEDs:

60% (Red LED)

7 LEDs:

80% (Red LED)

8 LEDs:

100% (Red LED)

A bar chart above the LEDs shows the relative percentage of trip.