Instruction manual

Select TIMR for A1FN, IN1U selects F, DP1 selects NODP, Set TIME=30.0
SP1 is set to 400 F initially, and corrected to 200 F before the process
reaches 200 F. As the process reaches set point ( ie. 200 F ) the timer starts
to count. The TIME value can still be corrected without disturbing the Timer
before time out. The TIME is changed to 40.0 after 28 minutes since the
process reached its set point. The behavior of process value and alarm 1 are
shown below.
Select TIMR for A1FN, IN1U selects F, DP1 selects NODP, Set TIME=30.0
SP1
is set to 400 F initially, and corrected to 200 F before the process
reaches
200 F. As the process reaches set point ( ie. 200 F ) the timer starts
to
count. The TIME value can still be corrected without disturbing the Timer
before
time out. The TIME is changed to 40.0 after 28 minutes since the
process
reached its set point. The behavior of process value and alarm 1 are
shown
below.
4 4 Ramp&Dwell4 4 Ramp & Dwell
Ramp
The ramping function is performed during power up as well as any time the set
point is changed. Choose MINR or HRR for SPMD, the unit will perform the
ramping function. The ramp rate is programmed by using RAMP which is
The
ramping function is performed during power up as well as any time the set
point
is changed. Choose MINR or HRR for SPMD, the unit will perform the
ramping
function. The ramp rate is programmed by using RAMP which is
Example without Dwell TimerExample without Dwell Timer
Select MINR for SPMD, IN1U selects F, DP1 selects 1-DP, Set RAMP=10.0.
SP1 is set to 200 F initially, and changed to 100 F after 30 minutes since
power up. The starting temperature is 30 F. After power up the process is
running like the curve shown below:
Select MINR for SPMD, IN1U selects F, DP1 selects 1-DP, Set RAMP=10.0.
SP1
is set to 200 F initially, and changed to 100 F after 30 minutes since
power
up. The starting temperature is 30 F. After power up the process is
running
like the curve shown below:
200
F
200
F
100
F
100
F
30
F
30
F
17
30 40
Time
(minutes)
Time
(minutes)
PV
0
Time (minutes)Time (minutes)
Note: When the ramp function is used, the lower display will show the current
ramping value. However it will revert to show the set point value as soon as the
up or down key is touched for adjustment. The ramping value is initiated to
process value either power up or RAMP and /or set point are changed. Setting
Note: When the ramp function is used, the lower display will show the current
ramping
value. However it will
revert to show the set point value as
soon as the
up
or down key is touched for adjustment. The ramping value is initiated to
process
value either power up or RAMP and /or set point are changed. Setting
SPMD ChooseSPMD Choose
or
Unit / minute
Unit / minute
Unit / hourUnit / hour
Adjust
Adjust
RAMP
Figure 4.1 RAMP FunctionFigure 4.1 RAMP Function
A1FN or A2FN ChooseA1FN or A2FN Choose
TIMER
TIME
Dwell
The Dwell timer can be used separately or accompanied with a Ramp. If A1FN
selects TIMR, the alarm 1 will act as a dwell timer. Similarly, alarm 2 will act as
a dwell timer if A2FN selects TIMR. The timer is programmed by using TIME
which is contained in user menu. The Timer starts to count as soon as the
process reaches its set point, and triggers an alarm as time out. Here is an
The Dwell timer can be used separately or accompanied with a Ramp. If A1FN
selects
TIMR, the alarm 1 will act as a dwell timer. Similarly, alarm 2 will act as
a
dwell timer if A2FN selects TIMR. The timer is programmed by using TIME
which
is contained in user menu. The Timer starts to count as soon as the
process
reaches its set point, and triggers an alarm as time out. Here is an
Example without RampExample without Ramp
28
minutes
40
minutes
40
minutes
Alarm 1 OFFAlarm 1 OFF
Alarm 1 ONAlarm 1 ON
TIME changed to 40.0TIME changed to 40.0
200 F
PV reaches set pointPV reaches set point
SP1 changed to 200 FSP1 changed to 200 F
PV
Figure 4.2 Dwell TimerFigure 4.2 Dwell Timer
.
.