Startco Engineering Ltd. Page 5
FPU-16 Feeder Protection Unit Rev. 1
Pub. FPU-16-M, November, 1997 Downloaded from the Internet, see Disclaimer.
ENTER — This switch is used to enter values in Modes 0 to 8, and to access a
second level in modes 0 to 5 and 8 to F. Values can be entered only
when the program-change lockout is defeated. This prevents
unauthorized or unintentional program changes during normal
operation. When the program-change lockout is defeated, the value
displayed in Modes 0 to 8 will be entered if ENTER is pressed within
three seconds after RAMP is released.
In Modes 0 to 5, the second-level set point will be displayed while
ENTER is pressed. In Modes 9 to E, the value immediately prior to
the most recent trip will be displayed while ENTER is pressed. If the
program-change lockout is defeated, the second level in Modes 0 to 5
will remain displayed for three seconds after ENTER is released to
allow RAMP to be pressed to initiate a second-level program change.
2.4 LED INDICATORS
The red TRIP/ALARM LED is on if a trip or alarm has occurred. It flashes when
the program-change lockout is defeated (program enable active); however, ON
has priority over FLASH. The green PROCESSOR LED is on when the
processor is functional.
2.5 PROGRAMMING
The FPU-16 has individual trip-and-alarm control relays and all trip-and-alarm
set points can be individually adjusted or deleted. At the top of each set-point
range, the delete code "ddd" is displayed. If "ddd" is entered, the set point is
deleted and the associated protection is disabled.
To enable program changes, the program-change lockout must be defeated by
connecting FPU-16 terminals 20 and 21. Remove this connection when
programming is completed. This will prevent unauthorized or unintentional
program changes.
To program trip set points in Modes 0 to 4 and the first level in Modes 5 to 8:
— Press MODE to select the mode,
— press RAMP to adjust, and within three seconds of release,
— press ENTER.
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