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...3.5 Ramp/Soak Profile Program
t. 0 5
Strt
0
t. 0 6
ENd
0
•1
t. 0 7
tIME
0. 0
•2
t. 0 7
rAtE
0
t. . 0 8
GUAr
OFF
•1
Only displayed if segment start and end values are the same, or the Ramp Type is set to 'tIME'.
•2
Only displayed if segment start and end values are different and the Ramp Type is set to 'rAtE'.
Segment Start Value
The segment start value can only be set if it is the first segment of a program.
[–999 to 9999 in engineering units]
Note. A
has different start and end set point values. A
Ramp
the same start and end set point values. Adjacent segments of different
or
programs MUST have the same start and end values, unless
Ramp
Soak
an intermediate 'spacer' segment is used.
The start value of a segment can only be adjusted if the segment is the first
of the selected program.
Segment End Value
[–999 to 9999 in engineering units]
If segment start/end values are the same or the ramp type is set to 'tIME',
advance to the
Segment Time
different and the ramp type is set to 'rAtE', advance to the
frame.
Segment Time
[0 to 999.9]
The time units (hours or minutes) are configured in
frame,
Profile Control Page.
Ramp Rate
[0.001 to 9999 engineering units per time period]
The time period (hours or minutes) is set in the
frame,
Profile Control Page
Example – If a ramp of 10°F at 2° every minute is required, the ramp rate
value entered is 2.0 (in the minutes time base).
Note. If the
Program Time Units
engineering units value is displayed to an extra decimal place.
Guaranteed Ramp/Soak Hysteresis
HI.LO – hysteresis applied above and below set point
('H.HLD' set if PV > [SP + Hysteresis] or
PV < [SP + Hysteresis])
LO
– hysteresis applied below set point
('H.HLD' set if PV < [SP – Hysteresis])
HI
– hysteresis applied above set point
('H.HLD' set if PV > [SP + Hysteresis])
OFF – hysteresis not applied, ramp/soak not guaranteed.
Continued...
3 PROFILES...
frame. If segment start/end values are
.
parameter is set to minutes, the
t.05...t.08
has
Soak
Ramp Rate
Ramp/Soak Time Units
Ramp/Soak Time Units
37
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