A1fv
ALARM 1 Function:
(code 0
to
11
): Refer to Table 1 page 14 for
function description and respective codes to set at this
prompt.
Default:
0
A2fv
ALARM 2 Function:
(code 0
to
11
): Refer to Table 1 page 14 for
function description and respective codes to set at this prompt.
Default:
0
A1xY
ALARM 1 HYSTERESIS:
Defines the differential range between the
PV value at which the alarm is turned on and the value at which it is
turned off.
Default:
0
A2xY
ALARM 2 HYSTERESIS:
Defines the differential range between the
PV value at which the alarm is turned on and the value at which it is
turned.
Default:
0
Differential
(Band Alarm)
4
Input Sensor
Error
5
Alarm is ON whenever:
•
Temperature is below selected range.
•
Temperature is above selected range.
•
Thermocouple or Pt100 is broken.
•
Pt100 is shorted, badly connected or wire impedance
is too high.
End of Soak Timer
6
Alarm turn On
(“Time for Soak”, see function
”
t sp
“ on Cycle 1)
7
Low alarm
disabled at power-up
8
High alarm
disabled at power-up
9
Differential low
limit alarm disabled at power-up
10
Differential high
limit alarm disabled at power-up
Alarm Functions
“With alarm inhibition
at power-up”
11
Differential
alarm disabled at power-up
(SV)+(SPAL+)
SV
PV
Dif-SPAL+
PV
SV
Dif-SPAL-
(SV)+(SPAL -)
Table 1 – Alarm Functions
Table 1 shows each alarm function operation with their respective code.
TYPE CODE ACTION
Low Alarm
(Low Temperature Alarm)
0
High Alarm
(High Temperature
Alarm)
1
Differential Low
(Deviation Low)
2
Differential High
(Deviation High)
3
S
P
A
L
P
V
S
P
A
L
S
P
A
L
P
V
L
o
w
S
P
A
L
H
i
g
h
( where SPAL means:
A1SP
and
A2SP
)
(SV)+(SPAL +)
SV
PV
Dif-Low SPAL+
(SV)+(SPAL -)
SV
PV
f-Low SPAL-
Alarm Functions:
Di
Di
Low Alarm:
Activates at present value, independent of main setpoint. Low
process-alarm activates at and below alarm setting.
High Alarm:
Activates at present value, independent of main setpoint. High
process-alarm activates at and above alarm setting.
(SV)+(SPAL+)
SV
PV
f-High SPAL+
(SV)+(SPAL -)
Differential Low:
Activates at present deviation (negative or positive) value from
main setpoint. Low deviation-alarm activates below alarm setting. Figure 9(a) on
page 16 gives a graphical description of this.
SV
PV
Dif-High SPAL-
Differential High:
Activates at present deviation (negative or positive) value from
main setpoint. High deviation-alarm activates above alarm setting. This is
represented in Figure 9(b) on page 16.
Differential:
Activates when the process exceeds a specified band-alarm centered
around the main setpoint. See Figure 9(c) on page 16.
( where SPAL means:
A1SP
and
A2SP
)
14 15
(30 pages)
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