NOVUS N480D- V3.2x A - Manual (Page 2)

4.5 CONFIGURATION LEVEL
Type
tYPE
INPUT TYPE: Selects the input sensor type to be connected to the controller. This is
the first parameter to be set.
0 - Thermocouple type J;
5 - Thermocouple type T;
1 - Thermocouple type K; 6 - Thermocouple type E;
2 – Thermocouple type S; 7 - Thermocouple type N;
3 - Pt100 with 0,1° resolution; 8 - Thermocouple type R;
4 - Pt100 with 1° resolution;
Vnit
unit
TEMPERATURE UNIT: Selects display indication for degrees Celsius or Fahrenheit.
0 - degrees Celsius ( °C ); 1 - degrees Fahrenheit ( °F );
A(t
ACtion
CONTROL ACTION: 0 - reverse action. Generally used for heating.
1 - direct action. Generally used for cooling.
Io A
Out A
OUTA FUNCTION: 0 - OUTA is control output.
1 - OUTA is Alarm 1 output.
2 - OUTA is Alarm 2 output.
Io b
Out B
OUTB FUNCTION: 0 - OUTB is control output.
1 - OUTB is Alarm 1 output.
2 - OUTB is Alarm 2 output.
Io (
Out C
OUTC FUNCTION: 0 - OUTC is control output.
1 - OUTC is Alarm 1 output.
2 - OUTC is Alarm 2 output.
Io d
Out D
OUTD FUNCTION: 0 - OUTD is control output.
1 - OUTD is Alarm 1 output.
2 - OUTD is Alarm 2 output.
3 - OUTD is Analog Control Output (4-20mA).
spll
SP Low Limit
SET POINT LOW LIMIT: sets the lower range for SV.
spKl
SP High Limit
SET POINT HIGH LIMIT: Sets the upper range for SV.
0ffs
OFF Set
SENSOR OFFSET: Offset value to be added to the PV to compensate sensor error.
Default value: zero.
A1fv
A2fv
Alarm 1 Function
FUNCTION OF ALARM 1/2: Refer to table 2 for function description and respective
codes to set at this prompt.
Aiky
A2ky
Alarm HYsteresis
ALARM 1 AND 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 off.
Prot
Protection
PROGRAM SECURITY: Defines the level of parameters protection from tampering.
Refer the chapter 4.2.
4.6 CALIBRATION LEVEL
These parameters are used to calibrate the temperature measurement and should only be dealt with by
experienced and well equipped personnel.
Inl(
Input Low Calibration
SENSOR OFFSET CALIBRATION. Sets the temperature sensor low calibration
(offset). The display shows only the corrected temperature and not the offset
added. A signal simulator should be used to inject a low value signal to properly
adjust the offset.
InK(
Input High Calibration
INPUT HIGH CALIBRATION. Sets the sensor input circuit gain or high
calibration. A signal simulator should be used to inject a high value signal to
properly adjust the offset.
(j L
Cold Junction Low
Calibration
COLD JUNCTION OFFSET CALIBRATION: Sets the cold junction offset
calibration. A good thermometer or a temperature simulator should be used to
properly adjust this parameter.
Ovl(
output Low Calibration
OFFSET CALIBRATION OF ANALOG OUTPUT: Offset (zero) calibration of the
analog control output (4-20 mA).
OvK(
output High Calibration
GAIN CALIBRATION OF ANALOG OUTPUT: Gain (span) calibration of the
analog control output (4-20 mA).
5. RAMP TO SOAK FUNCTION CHARACTERISTICS
This function makes the process temperature rise gradually from the starting point (present PV) to the
temperature value set in “ SP “ (Ramp). The user defines the rate of rise in degrees per minute at the “rAtE”
prompt. When SP is reached the temperature is leveled at this point for 1 to 9999 minutes as programmed at the
“ t SP ” prompt. Setting 0 (zero) at “ t SP ” defines an infinite length soak profile.
Soak
Temperature
PV
Ramp
Time
SP
Figure 2 - Ramp to Soak Function
To disable the ramp function Set 0.0 at the “rAtE” prompt. To disable the soak function set 1 at the “ t SP
” prompt (thus making a 1 minute soak) and the control output will go off in 1 minute. To restart control set 1
at the “ rvn ” prompt.
After a power failure the controller will resume ramp to soak execution at the equivalent previous ramp point.
If the process temperature is the same as the SP (no temperature drop) the controller will repeat the soak
segment.
6. PID AUTO TUNE
During auto tune the temperature is controlled in ON/OFF mode at the programmed Set Point (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:
 Program a new SP close to the desired final temperature other than the present measured temperature.
 Enable the auto tune at the “Atvn” prompt by selecting 1.
 Set 1 at the “rvn” prompt. The TUNE message will be signaled in the display.
During auto tune large oscillations will be induced around the set point. Make sure the process can accept
these oscillations. If auto tuning results are not satisfactory refer to table 3 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 3 - Suggestions for manual tuning of PID parameters
7. ALARM FUNCTIONS
Low and high alarms are used to signal minimum and maximum temperature values as programmed in the
“SPA1” and “SPA2” prompts.
Differential alarms are used to indicate deviations from the desired set point (SP) temperature. These
deviations are programmed at the “SPA1” and “SPA2” prompts. Error alarm shows sensor defects or not
properly connected. Table 2 shows each alarm function operation with their respective code. Alarm 1 is used
as an example.
7.1 ALARM INITIAL BLOCKING
The initial blocking option inhibits the alarm from being recognized if an alarm condition is present when the
controller is first energized. The alarm will actuate only after the occurrence of a non alarm condition
followed by a new occurrence for the alarm.
TYPE CODE ACTION
LOW 0
SPA1
Alarm ON
Ligado
TEMPERATURE
HIGH 1
SPA1
Alarm ON
TEMPERATURE
SPA1
Negative SP + SPA1 SP
Alarm ON TEMPERATURE
LOW
differential 2
SPA1
Positive SP + SPA1 SP
Alarm ON TEMPERATURE
SPA1
Negative SP + SPA1 SP
Alarm ON
TEMPERATURE
HIGH
differential 3
SPA1
Positive SP + SPA1 SP
Alarm
ON TEMPERATURE
SPA1
Negative SP - SPA1 SP + SPA1 SP
Alarm ON
TEMPERATURE
differential
or deviation 4
SPA1
Positive SP + SPA1 SP - SPA1 SP
Alarm ON Alarm ON
TEMPERATURE
Input sensor
error or
heater
break
detection
5
Alarm is ON whenever:
 Temperature is below/above selected range;
 Thermocouple or Pt100 is broken;
 Pt100 is shorted; badly connected or wire impedance is too high;
 The heater resistance is broken
End of
Program 6
Activated when the programmed soak time is run out. Refer to item 4 of this
manual.
7 Low limit alarm disabled at power-up
8 High limit 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
Table 2 - Alarm functions and their identification codes
8. PROBLEMS WITH THE CONTROLLER
Connection and configuration errors state for most of the problems in using the controller. A final revision of
parameters will save time and further losses.
Error messages are displayed to help the user to identify possible problems.
: Process temperature is below the selected sensor range.
: Process temperature is above the selected sensor range
: Controller or sensor error. Example: Broken thermocouple or Pt100, Pt100 badly
connected, short-circuited or high cable resistance.
5.1 GETTING THE INSTRUMENT SERIAL NUMBER
Upon power-on, the controller displays its firmware version for 3 seconds. The serial number is accessed
when the controller is powered while holding the key
pressed.
9. PRODUCT IDENTIFICATION
The label attached to the controller case identifies the model and the optional present in the product, as
described below:
MODEL: N480D – A – B, where:
A: Outputs: RP (OUT A = Relay, OUT B = Pulse)
RPR (OUT A = Relay, OUT B = Pulse, OUT D = Relay)
RRR (OUT A = Relay, OUT C = Relay, OUT D = Relay);
RAR (OUT A = Relay, OUT C = Relay, OUT D = 4-20 mA )
B. Voltage rating: blank (100-240 Vac/dc) or 24V (24 Vac/dc);
10. TECHNICAL ASSISTANCE
If you encounter a problem with your controller, review the configuration with regard to inputs, outputs,
alarms, etc. If the problem persists, contact your supplier or Novus at [email protected].