NOVUS Controller N1100 - Manual (Page 7)

Controller N1100
NOVUS AUTOMATION 7/8
EVENT ALARM
This function makes possible to program the activation of alarms in
specific segments of a program.
For such, alarms must have their function set as “rS rS rS rS “ and be
programmed in “ PE1 PE1 PE1 PE1“ to “ PE7 PE7 PE7 PE7“ according to Table 6. The number
programmed in the event prompt defines the alarms to be activated.
To configure and execute a ramp and soak program:
•
Program the tolerance value, SV, time and event.
•
If any event alarm is required program the ramp and soak event
function.
•
Set the control mode to automatic.
•
Select ramp and soak program to be executed at prompt Prn Prn Prn Prn
(0 to 7)
•
Start control at the rvn rvn rvn rvn prompt by selecting YES.
Before executing the program the controller waits for PV to reach the
first set point SP0 if PtoL
PtoL PtoL PtoL is different than zero.
Should any power failure occur the controller resumes at the
beginning of the segment it currently is.
CODE ALARM 1 ALARM 2 ALARM 3 ALARM 4
0 0 0 0
1 1 1 1 X
2 2 2 2 X
3 3 3 3 X X
4 4 4 4 X
5 5 5 5 X X
6 6 6 6 X X
7 7 7 7 X X X
8 8 8 8 X
9 9 9 9 X X
10 10 10 10 X X
11 11 11 11 X X X
12 12 12 12 X X
13 13 13 13 X X X
14 14 14 14 X X X
15 15 15 15 X X X X
Table 5 - Event codes for ramp and soak
AUTO TUNE
During auto tune the process is controlled in ON / OFF mode at the
programmed SetPoint (SV). Depending on the process
characteristics large oscillations above and below SV may occur and
auto tuning may take several minutes to be concluded.
The recommended procedure is as follows:
•
Disable the control output at the rvn rvn rvn rvn prompt by selecting NO.
•
Select auto mode operation at the Avto Avto Avto Avto prompt by selecting YES.
•
Disable the ramp and soak function (select NO) and program a new
SV value other than the present PV (close to the desired set point).
•
Enable auto tuning at the Atvn Atvn Atvn Atvn prompt by selecting YES.
•
Enable the control output at the rvn rvn rvn rvn prompt by selecting YES.
During the auto tune procedure the soft-start function will not operate
and large oscillations will be induced around the setpoint. Make sure the
process can accept these oscillations and fast control output changes.
If auto tuning results are not satisfactory refer to Table 6 for manual
fine tuning procedure.
PARAMETER RESPONSE SOLUTION
Slow Response Decrease
Proportional Band
Large Oscillation Increase
Slow Response Increase
Integral Rate
Large Oscillation Decrease
Slow Response or Instability Decrease
Derivative Time
Large Oscillation Increase
Table 6 - Suggestions for manual tuning of PID parameters
PROBLEMS WITH THE CONTROLLER
Connection errors and inadequate programming are the most
common errors found during the controller operation. A final review
may avoid loss of time and damages.
The controller displays some messages to help the user identify
problems.
MESSAGE PROBLEM
---- ---- ---- ---- Open input. Without sensor or signal.
Err1 Err1 Err1 Err1
Err6 Err6 Err6 Err6
Configuration or connection problem in the Pt100
cable
Other error messages displayed by the controller can account for errors
in the input connections or type of selected input non compliant with the
sensor or signal applied to the input. If errors persist, even after a
review, contact the manufacturer. Inform also the device serial number.
To find out the serial number, press
for more than 3 seconds.
The controller also has a visual alarm (the display flashes) when the
PV value is out of the range set by spxl
spxl spxl spxl and spll spll spll spll.
CALIBRATION
INPUT CALIBRATION
All inputs are factory calibrated and recalibration should only be done
by qualified personnel. If you are not familiar with these procedures
do not attempt to calibrate this instrument. The calibration steps are:
a) Select the input type to be calibrated.
b) Set the desired upper and lower display limits.
c) At the input terminals inject an electrical signal corresponding to a
known indication value a little higher than the lower display limit.
d) Select theinL( inL( inL( inL( prompt. Through the and keys adjust PV
so that it matches the injected signal.
e) Inject a signal that corresponds to a value a little lower than the
upper limit of the display.
f) Select theink( ink( ink( ink( prompt. Through the and keys adjust PV
so that it matches the injected signal.
g) Repeat steps c) to f) to improve calibration.
ANALOG OUTPUT CALIBRATION
1) Select type 11 or 12 at the I/O5 prompt.
2) Connect a current meter at the analog output.
3) Disable the auto-tune and soft-start functions.
4) Set the output low limit ovLL ovLL ovLL ovLL to 0.0 % and the output high limit
ovkL ovkL ovkL ovkL to 100.0 %.
5) Select the manual mode at the avto avto avto avto prompt.
6) Enable the output at the rvn rvn rvn rvn prompt.
7) At the operation cycle, set the MV to 0.0 %.
8) At the output low calibration ovLC ovLC ovLC ovLC prompt, press the and
key until the mA meter reads zero mA. Approach this value from
above.
9) Set 100.0 % for the manipulated variable (MV).
10) At the output high calibration ovkC ovkC ovkC ovkC prompt, press the and
key until the mA meter reads 20 mA. Approach this value
from below.
11) Repeat steps 7) to 10) as necessary.