BE1-24 Human-Machine Interface
2-1
SECTION 2 • HUMAN-MACHINE INTERFACE
CONTROLS AND INDICATORS
Table 2-1 lists and briefly describes the BE1-24 controls and indicators. Reference the callouts to Figure
2-1.
Table 2-1. BE1-24 Controls and Indicators
Locator
Control or Indicator
Function
A
INST. PICKUP
(Optional)
Thumbwheel adjustment establishes the pickup point for the
instantaneous output. Adjustable from 1.0 to 3.99 V/Hz in 0.01
V/Hz increments.
B
TIME TRIP PICKUP
Thumbwheel adjustment establishes the pickup point for the
time trip output. Adjustable from 1.0 to 3.99 V/Hz in 0.01 V/Hz
increments.
C
TIME DIAL
Thumbwheel adjustment to select individual inverse square
characteristic curve. Adjustable from 0.1 to 10.0 in 0.1
increments. To select 10.0, set 0.0 (there is no tens digit
thumbwheel) on the TIME DIAL thumbwheels.
D
RESET
Thumbwheel adjustment establishes the linear rate of reset per
percent of full-scale trip time to model the protected
equipment's cooling rate. Adjustable from 0.1 to 9.9 seconds
in 0.1 second increments. A setting of 0.0 enables the reset
time to be instantaneous.
E
ALARM PICKUP
Thumbwheel adjustment establishes the pickup point for the
alarm output. Adjustable from 1.0 to 3.99 V/Hz in 0.01 V/Hz
increments.
F
ALARM TIME DELAY
Thumbwheel adjustment establishes the definite time delay for
the alarm output. Adjustable from 0.1 to 9.9 seconds in 0.1
second increments. A setting of 0.0 enables the alarm output
to be instantaneous.
G
ALARM PICKUP
Indicator
When ON, red LED indicates that the alarm pickup setting has
been exceeded and that the unit is timing.
H
POWER Indicator
When ON, red LED indicates that the power supply is providing
nominal ±12 Vdc to internal operating circuitry.
I
Target Reset Lever
Mechanical lever used to reset magnetically latched target
indicators.
J
Trip Target Indicators
Magnetically latched, manually reset target indicators provide
visual indication that the respective trip output relay has been
energized. Must be manually reset.
K
PUSH-TO-ENERGIZE
OUTPUT
Pushbuttons provide manual actuation of the output contacts
by insertion of a 1/8 inch thick non-conducting rod (not
supplied) through the access holes in the front panel.
L
Timing Status Display
(TSD)
A series of 10 LED's used to indicate the accumulation of time
towards trip or reset. Each LED represents approximately 10%
of the total time accumulated. See Section 3 for complete
functional description.
M
TIME TRIP PICKUP
Indicator
When ON, red LED indicates that the time trip pickup setting
has been exceeded and that the unit is timing.
Summary of Contents for BE1-24
Page 9: ...1 4 BE1 24 General Information Figure 1 1 Inverse Square vs Two Step...
Page 10: ...BE1 24 General Information 1 5 Figure 1 2 Protection Characteristics of the BE1 24...
Page 12: ...BE1 24 General Information 1 7 Figure 1 3 Style Number Identification Chart...
Page 16: ...BE1 24 General Information 1 11 Figure 1 4 Inverse Square Characteristic Curves...
Page 19: ...2 2 BE1 24 Human Machine Interface Figure 2 1 Location of Controls and Indicators...
Page 27: ...4 2 BE1 24 Installation Figure 4 1 M1 Case Outline Dimensions Front View...
Page 30: ...BE1 24 Installation 4 5 Figure 4 4 M1 Case Double Ended Panel Drilling Diagram Rear View...
Page 31: ...4 6 BE1 24 Installation Figure 4 5 M1 Case Panel Drilling Diagram...
Page 32: ...BE1 24 Installation 4 7 Figure 4 6 M1 Case Projection Mounting Outline Dimensions Rear View...
Page 34: ...BE1 24 Installation 4 9 Figure 4 7 Typical Internal Connections...