NOVUS N1040 Controller - Manual (Page 3)

N1040 Controller
NOVUS AUTOMATION 3/5
To enter a particular level, simply release the “P” key when the first
parameter in that level is displayed. To walk through the parameters
in a level, press the “P” key with short strokes. To go back to the
previous parameter in a cycle, press
:
Each parameter is displayed with its prompt in the upper display and
value/condition in the lower display. Depending on the level of
parameter protection adopted, the parameter PASS precedes the
first parameter in the level where the protection becomes active. See
section CONFIGURATION PROTECTION.
DESCRIPTION OF THE PARAMETERS
OPERATION CYCLE
PV + SP PV and SP indication – The upper display shows the
current value of PV. The lower display shows the
control SP value.
Sp.a1
Sp.a2
ALARM SETPOINT: Tripping point for alarm 1 and 2.
Value that defines the point of activation for the
programmed alarms with the functions Lo or ki.
For the alarms configured with Differential type
functions, this parameter defines deviation (band).
Not used for the other alarm functions.
TUNING CYCLE
Atvn AUTO-TUNE: enables the auto-tuning function for the
PID parameters (pb,ir, dt). Defines the control
strategy to be taken:
off – Turned off. (no PID tuning)
Fast – Fast automatic tuning.
Full – More accurate automatic tuning.
Refer to the section DETERMINATION OF PID
PARAMETERS for more details.
pb Proportional Band - Value of the term P of the control
mode PID, in percentage of the maximum span of the
input type. Adjust of between 0 and 500.0 %.
When set to zero (0), control action is ON/OFF.
ir Integral Rate - Value of the term I of the PID algorithm,
in repetitions per minute (Reset). Adjustable between 0
and 99.99. Displayed only if proportional band 0.
dt Derivative Time - Value of the term D of the control
mode PID, in seconds. Adjustable between 0 and 300.0
seconds. Displayed only if proportional band 0.
(t CYCLE TIME: Pulse Width Modulation (PWM) period
in seconds. This term is not used when controller is set
to ON/OFF action (Pb=0).
Kyst CONTROL HYSTERESIS: Is the hysteresis for
ON/OFF control (set in temperature units). This
parameter is only used when the controller is in
ON/OFF mode (Pb=0).
A(t Action Control:
re Control with Reverse Action. Appropriate for
heating. Turns control output on when PV is
below SP.
dir Control with Direct Action. Appropriate for
cooling. Turns control output on when PV is
above SP.
sfst SoftStart function – Time in seconds during which the
controller limits the MV value progressively from 0 to
100 %. It is enabled at power up or when the control
output is activated. If in doubt set sfst = 0 (the zero
value disables the Soft start function).
0vt1
0vt2
0vt3
0vt4
Assign functions to the Output channels OUT1, OUT2,
OUT3 e OUT4:
Off - Not used.
(trl - control output.
A1 - alarm 1 output.
A2 - alarm 2 output.
A1a2 - Alarm 1 + Alarm2 (OR logic).
Lbd - Loop Break Detect Alarm.
ALARMS CYCLE
Fva1
Fva2
Functions of Alarms. Defines the functions for the
alarms among the options of the Table 02.
Sp.a1
Sp.a2
ALARM SETPOINT: Tripping point for alarm 1 and 2.
Value that defines the point of activation for the
programmed alarms with the functions Lo or ki.
For the alarms configured with Differential type
functions, this parameter defines deviation (band).
Not used for the other alarm functions.
Sp1.e
sp2.e
Configures display of SPA1 and SPA2 also in the
Operation Cycle.
YES - SPA1/SPA2 are displayed in the Operation
Cycle
NO - SPA1/SPA2 are not displayed in the Operation
Cycle
bla1
bla2
Blocking Alarms.
YES - enables initial blocking
NO - inhibits initial blocking
xya1
xya2
Alarm Hysteresis. Defines the difference between the
value of PV at witch the alarm is triggered and the
value at witch it is turned off.
flsh
Allows visual signalization of an alarm occurrence by
flashing the indication of PV in the operation level.
YES - enables alarm signaling flashing PV
NO - disables alarm signaling flashing PV
INPUT CYCLE
Type INPUT TYPE: Selects the input signal type to be
connected to the process variable input. Refer to
Table 01 for the available options.
fltr
Digital Input Filter - Used to improve the stability of the
measured signal (PV). Adjustable between 0 and 20.
In 0 (zero) it means filter turned off and 20 means
maximum filter. The higher the filter value, the slower
is the response of the measured value.
Dp.po Selects the decimal point position to be viewed in both
PV and SP.
vni t
Selects display indication for degrees Celsius or
Fahrenheit:
( - Indication in Celsius.
f - Indication in Fahrenheit.
0ffs SENSOR OFFSET: Offset value to be added to the PV
reading to compensate sensor error. Default value: zero.
Spll Defines the SP lower limit of.
To 50 mV input type sets the lower range for SP and
PV indication.
Spxl
Defines the upper limit for adjustment of SP.
To 50 mV input type sets the upper range for SP and
PV indication.
Lbd.t Time interval for the LBD function. Defines the
maximum interval of time for the PV to react to a
control command. In minutes.