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Honeywell UDC2800 - Page 218

Honeywell UDC2800
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218
Associated
Prompts
Contents Definition
When enabled, this selection allows you to reset
the program via the keyboard to the beginning of
the program.
Rerun Rerun the current segment. Press the Lower
Display key under the main screen, until you see
Rerun, then press the Increment key or
Decrement key, Rerun will go into effect.
When enabled, this selection allows you to reset
the program via the keyboard to the beginning of
the current segment.
Hot Start Hot Start This function determines whether LSP1 or PV is
used as the setpoint when the program is initially
changed from HOLD to RUN.
The selections are:
Disable = When the program is initially changed
from HOLD to RUN the present LSP1 value is
captured as the default setpoint. If the program is
terminated or the power cycled before the
program has completed, the LSP1 is used as the
control setpoint. The beginning segment uses
this value as the initial ramp setpoint.
Enable = When the program is initially changed
from HOLD to RUN the present PV value is
captured and used as the beginning setpoint
value for the ramp segment. If the program is
terminated before completion, the setpoint value
will revert back to the initial LSP1 value captured
at the initial HOLD to RUN transition. If the
power is cycled before program completion, upon
power-up the setpoint is set to the initial LSP1
value at power-up and when the program is
restarted that PV value is used initially.
Ramp Unit
Segment x Ramp
or
Segment x Rate
Ramp time or
rate segments
A ramp segment is the time it will take to change
the setpoint to the next setpoint value in the
program.
Ramps are odd number segments (1, 3, 5, 7).
Chapter 5 - Monitoring and Operating the Controller

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