Chromalox 1601, Руководство пользователя, Страница: 12 / 32

7
P7 = Alarm action
Available only when P5 is different from 0 or 4.
r = reverse (relay de-energized in alarm condition)
d = direct (relay energized in alarm condition)
P8 = Alarm inhibit
Present only when P5 is different from 0 or 4.
OFF = inhibit disabled
ON = inhibit enabled
NOTE : If the alarm is programmed as band or
deviation alarm, this function disables the alarm
condition after a set point change or at the
controller startup until the process variable passes
the alarm set point plus or minus hysteresis. If the
alarm is programmed as process alarm, this
function disables the alarm condition at controller
start up until the process variable pass the alarm
set point plus hysteresis.
P9 = OFFSET applied to the measured value
This OFFSET is applied along the whole range.
When P1= 5
P9 is programmable from -19.9
to 19.9 °C.
When P1
¹
5 P9 is programmable from -199
to 199 °C or °F.
P4 = Main output action
r = reverse action (heating)
d = direct action (cooling)
P5 = Output 2 functions
0 = Not provided
1 = Process alarm
2 = Band alarm
3 = Deviation alarm
4 = instrument failure indicator (under or over
range, CJC, or A-D converter failure)
P6 = Output 2 operator mode.
P6 is available only when P5 is different from 0.
When P5 = 1,2 or 3
H.A = high alarm (outside band) with automatic reset
L.A = low alarm (inside band) with automatic reset
H.L= high alarm (outside band) with manual reset
(latching)
L.L= low alarm (inside band) with manual reset
(latching)
When P5 = 4 the selections H.A and L.A show an
instrument failure indicator with automatic reset while
the H.L and L.L selections show an instrument failure
indicator with manual reset.
t
INPUT
t
OUTPUT
t
INPUT
t
OUTPUT
Reverse Direct
Readout
P9
Real curve
adjusted curve
Input
1601-1-0C.p65 5/2/00, 1:45 PM 7