Novus Controller N3000 Manual do Utilizador descarregar pdf (Página 5)

Controller N3000

NOVUS AUTOMATION 5/9

CONFIGURATION PARAMETERS

OPERATION CYCLE

PV Indication

(Red)

SV Indication

(Green)

PV AND SV INDICATION: The status display shows

the present value of PV (Process Variable). The

parameter display shows SV (Set Variable).

The status display shows “- - - -“ whenever PV exceeds

the maximum range or there is no signal at the input. In

case of hardware error the status display will show

Ern

where n is the error code.

avto

CONTROL MODE: YES indicates automatic control

mode (closed loop, PID or ON/OFF). NO indicates

manual control mode (open loop). Bumpless transfer

from auto ↔ to manual mode is available. If in doubt

program YES.

PV Indication

(Red)

MV Indication

(Green)

MANIPULATED VARIABLE VALUE (MV): The upper

display shows PV value and the lower display shows

the percentage of MV applied to the control output.

When in manual control the MV value can be manually

changed. When in auto mode the MV value can only be

viewed.

To distinguish the MV display from the SV display, the

MV is shown flashing intermittently.

Pr n

RAMP AND SOAK PROGRAM SELECTION: Selects

the ramp and soak program to be executed (7

programs possible). Refer to chapter 7 for R&S

description.

rvn

CONTROL ENABLE: YES means that the control

output and alarms are enabled and NO means they

are disabled.

AUTO TUNING CYCLE

atvn

AUTO-TUNE: YES

enables the auto tuning of the PID

parameters and NO disables it.

PROPORTIONAL BAND: Percentage of maximum

input span. 0 to 500 %. Select zero for ON/OFF control.

xyst

CONTROL HYSTERESIS (in engIneering. units): This

parameter is only shown for ON/OFF control (Pb=0).

‘ ir‘

INTEGRAL RATE: Integral time constant in repetitions

per minute (Reset).

DERIVATIVE TIME: Derivative time constant, in

seconds.

CYCLE TIME: PWM period in seconds. Can only be

viewed if proportional band is other than zero.

act

CONTROL ACTION: For Auto Mode only.

•

Reverse Action usually used for heating.

•

dir

Direct Action usually used for cooling.

bias

Offset for MV (manual reset). Range: -100 % to +100

%. Default value: 0.

ovll

OUTPUT LOW LIMIT: minimum percentage value for

MV (Manipulated Variable) when in automatic control

and PID. Default value: 0.0 %

ovxl

OUTPUT HIGH LIMIT: Maximum percentage value for

MV when in automatic control and PID. Default value:

100.0 %

sfst

SOFT START: 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 zero.

Sp.a1

Sp.a2

Sp.a3

Sp.a4

ALARM PRESET: Tripping point for alarm 1, 2, 3

and 4.

RAMP AND SOAK PROFILE PROGRAMMING CYCLE

tbas

TIME BASE

: Selects the time base for the ramp and

soak. Valid for all profile programs.

- PT1 to PT7 values are in seconds;

- PT1 to PT7 values are in minutes;

Pr n

PROGRAM TO BE VIEWED: Selects the ramp and

soak profile program to be edited/viewed in the

following cycle prompts (7 programs available).

ptol

RAMP AND SOAK TOLERANCE: maximum deviation

between PV and SV. Whenever this deviation is

exceeded the time counter is halted until deviation

lowers to within the tolerance. Set zero to disable this

function.

Psp0

Psp7

RAMP AND SOAK SET POINTS (0 to 7): Set of 8 SV

values which define the ramp and soak profile

segments. See also PT1 to 7 and PE1 to 7 below.

Pt1

Pt7

RAMP AND SOAK SEGMENTS TIME (1 to 7): Set of

7 time intervals in minutes or seconds (9999 max.) for

the 7 segments of the ramp and soak program.

Pe1

Pe7

RAMP AND SOAK EVENT (1 to 7): Set of 7 values

that define which alarms must be activated during a

ramp and soak program segment. Alarm function

depends on “

” setting (Table 3).

LINK TO PROGRAM: Number of the next profile

program to be linked to follow the current profile.

Profiles can be linked to make larger programs of up

to 49 segments.

ALARM CYCLE

Fva1

ALARM 1 FUNCTION: Select options from Table 3.

Fva2

ALARM 2 FUNCTION: Select options from Table 3.

Fva3

ALARM 3 FUNCTION: Select options from Table 3.

Fva4

ALARM 4 FUNCTION: Select options from Table 3.

bla1

bla2

bla3

bla4

ALARM BLOCK 1 TO 4: This function blocks the alarm

at power-up when the units is first energized.

YES enables and NO inhibits this blocking function.

When enabled the alarm will not be active at power-up

waiting for PV (Process Variable) to reach a non-alarm

situation. From this point on the alarm will be free to

actuate should a new alarm situation occur.

xya1

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 (in

engineering units).

xya2

ALARM 2 HYSTERESIS: Same as above.

xya3

ALARM 3 HYSTERESIS: Same as above.

xya4

ALARM 4 HYSTERESIS: Same as above.

A1t1

ALARM 1 TIME 1: Defines the time (6500 sec. max.)

during which the alarm 1 output will be ON when

alarm 1 is active. Program zero to disable this function.

A1t2

ALARM 1 TIME 2: Defines the OFF state time for the

alarm 1 output, after being ON during the time

selected on ALARM 1 TIME 1. Program zero to

disable this function.

A2t1

ALARM 2 TIME 1: Defines the time (6500 sec. max.)

during which the alarm 1 output will be ON when

alarm 1 is active. Program zero to disable this function

A2t2

ALARM 2 TIME 2: Defines the time during which the

alarm 2 output will be, after being ON during the time

selected on ALARM 2 TIME 1. Program zero to

disable this function. Table 4 shows the advanced

features that can be achieved with these time

functions.

1 2 3 4 5 6 7 8 9

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