NOVUS N480I User Manual

5.1 ALARM INITIAL BLOCKING

FIRST 4 DIGITS

SERIAL NUMBER

LAST 4 DIGITS

Alarm blocking at power-up inhibits the relay alarm to t rip when the unit is first energized. The alarm will only
trip after the process variable reaches a new alarm situation.

Error alarm shows sensor defects or not properly connected.

6 PROBLEMS WITH THE CONTROLLER

Connection and configuration errors state for most of the problems in using th e 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

Erro

: Controller or sensor error. Example: Broken thermocouple or Pt100. Pt100 badly

connected, short-circuited or high cable resistance.

6.2 ELECTRONIC SERIAL NUMBER VISUALIZATION

To read the 8-digit serial number go to the Operation Level and press the key for 3 seconds. The display
will show the first 4 digits. Then keep the key pressed for 3 seconds and the display will show the last 4
digits.

When powering the unit the display will show the software version for a few seconds.

7 PRODUCT IDENTIFICATION

The label attached to the controller case identifies t he model and the optional present in the product, as
described below:

MODEL: N480I – A – B, where:

A: Outputs: RP OUT A = Relay and OUT B = Relay

RF OUT A = Relay and OUT B = 24Vdc auxiliary supply
B. Voltage rating: blank (100-240 Vac/dc) or 24V (24 Vac/dc)

8 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 [e-mail].

MICROPROCESSOR BASED TEMPERATURE

INDICATOR

N 4 8 0 I - V3.1x

OPERATING MANUAL

1 SAFETY SUMMARY

The symbols below are used on the equipment and throughout this document to draw the user’s attention to
important operational and safety information.

All safety related instructions that appear in the manual must be observed to ensure personal safety and to
prevent damage to either the instrument or the system. If the instrument is used in a ma nner not specified by

the manufacturer, the protection provided by the equipment may be impaired.

2 SPECIFICATIONS

• Dimensions: 48 x 48 x 110 mm (1/16 DIN). Panel cut-out: 45,5 x 45,5 mm. Weight: 150 g (max.);

• Power: 100 to 240 Vac / dc (± 10 %), 50 / 60 Hz or 24 Vdc / ac (± 10 %); Max. Consumption: 9 VA;

• Pt100: α=385. 3-wire connection. Excitation current: 0.170 mA;

• Accuracy: 0.2 % of full scale for Pt100 and 0,25 % of full scale ±1 °C for T/C

• Thermocou ple input impedance: 10 MΩ

• A/D converter resolution: 15000 steps

• Sampling rate: 10 measurements per second

• Environmental conditions: 5 to 50 °C; Relative humidity (maximum): 80 % up to 30 ºC. For

• Front panel: Polycarbonate UL94 V-2; Back panel:ABS + PC UL94 V-0

• EMC: EN 61326-1:1997 and EN 61326-1/A1:1998

• SAFETY: EN 61010-1: 1993 e EN 61010-1/A2: 1995

CAUTION or WARNING:

Read complete instructions prior to installation

and operation of the unit.

temperatures above 30 ºC, decrease 3 % per ºC. Installation category II. Pllution degree 2. Altitude <
2000 m.

INPUT TYPE CODE RANGE

Termocouple J

Termocouple K

Termocouple T

Termocouple E

Termocouple N

Termocouple R

Termocouple S

Pt100 (Resolution 0.1 °C)

Pt100 (Resolution 1 °C)

4 to 20 mA

4 to 20 mA

4 to 20 mA

4 to 20 mA

4 to 20 mA

4 to 20 mA

4 to 20 mA

4 to 20 mA

4 to 20 mA

0 to 50 mV

4 to 20 mA

0 to 10 V

CAUTION or WARNING:

Electrical Shock Hazard

0000

1111

2222

3333

4444

5555

6666

7777

8888

9999

10

10

1010

11

11

1111

12

12

1212

13

13

1313

14

14

1414

15

15

1515

16

16

1616

17

17

1717

18

18

1818

19

19

1919

20

20

2020

Table 1 – Types of sensors accepted by the indicator

-50 to 760 °C (-58 to 1400 °F)

-90 to 1370 °C (-130 to 2498 °F)

-100 to 400 °C (-148 to 752 °F)

-30 to 720 °C (-22 to 1328 °F)

-90 to 1300 °C (-130 to 2372 °F)

0 to 1760 °C (32 to 3200 °F)

0 to 1760 °C (32 to 3200 °F)

-199.9 to 530.0 °C (-199.9 to 986.0 °F)

-200 to 530 °C (-328 to 986 °F)

Linearized J. Maximum range -110 to 760 °C

Linearized K. Maximum range -150 to 1370 °C

Linearized T. Maximum range -160 to 400 °C

Linearized E. Maximum range -90 to 720 °C

Linearized N. Maximum range -150 to 1300 °C

Linearized R. Maximum range 0 to 1760 °C

Linearized S. Maximum range 0 to 1760 °C

Linearized Pt100. Max. range -199.9 to 530.0 °C

Linearized Pt100. Max. range -200 to 530 °C

Linear. Programmable range from -1999 to 9999

Linear. Programmable range from -1999 to 9999

Linear. Programmable range from -1999 to 9999

3 INSTALLATION

Pt100

3-WIRE

T/C

V

VOLTAGE

mA

4-20mA

Transmisso r

TEMPERATURE

TEMPERATURE

Alarm ON

Alarm ON

ON

ON

TEMPERATURE

Alarm Functions

The indicator should be installed in a panel cut out as specified. First remove the mounting clamp an d insert
the controller into the panel cut out. Place the u nit into the panel cut-out and slide the mounting clamp from
the rear to a firm grip at the panel.

The internal circuitry can be f ully removed from the housing without disconnecting any wiring. By using the
thumb just press the tab in the lower part of the front panel, grab firmly the f ront panel and pull out the
circuitry from the housing.

3.3 POWER

Mains power is connected to terminals 1 and 2. Check the upper side of the housing for proper power indication.
Figure 1 shows the electrical terminals of the indicator.

Figure 1 - Electrical connections

3.4 INPUT WIRING

The different input signals are connected according Figure 2.

Figure 2 – Input Wiring

Notes: 1 For proper wire lenght compensation, all Pt100 wires should have the same electrical

resistance.

2 For 2 wire Pt100, short circuit terminals 11 and 12. Cable length is not compensated.
3 Thermocouples must be connected with the proper extension wire.

3.5 USING THE PROVIDED AUXILIARY DC VOLTAGE SUPPLY FOR POWERING 2-WIRE

FIELD TRANSMITTERS

2 fios

fonte de t ensão

Figure 3 – 4-20 mA input wiring of a field transmitter powered by the N480i 24 V Auxiliary Power Supply

entrada 4 -20mA

4 CONFIGURATION AND OPERATION

Prior to first operation the controller should be fully configured. The user must set basic parameters as
temperature type (“TYPE

TYPE”), the desired control set point (“SP

TYPETYPE

SP“), the alarms set points (“A1SP

SPSP

A1SP” and “A2SP

A1SPA1SP

4.1 PARAMETERS FLOW CHART

The programming parameters are organized in 4 different sets or levels:

Mensuration Level / Alarms Level / Configuration Level / Calibration Level

At power up the controller displays a prompt at the Operation Level and remains in this l evel while u nder
normal operation.

The other levels are only accessed when a change of parameters is necessary. To reach these other
parameters the user must keep the key pressed for about three seconds. Aft er this time the controller
will show the first parameter of the next level. By keeping the key pressed for another 3 seconds t he
next level will be accessed.

Release the key when the desired level is reached. Press once the key to go to the next prompt in
the same level. Use the key to go back to the previous displayed parameter.

A2SP”), etc.

A2SPA2SP

The upper display (red) shows the parameter name while the lower display (green) shows its value. The
keys and allow changing the parameter value.

The indicator will resume and show the operation level after all prompts have been accessed or whenever
the keyboard is not used for more than 20 seconds.

Any changed parameter is only saved into non-volatile memory after moving to the next parameter or when
no key is touched for 20 seconds.

4.2 PROGRAM SECURITY

To avoid tampering, parameter “ Prot
programming parameters.

With the jumper in the OFF position, all program levels are unprotected. T he “Prot
changed with the jumper in the OFF position.

With the jumper in the ON position or removed, the protection level is defined by the current value of the
“Prot

Prot” parameter:

ProtProt

0000 No protection. All parameters can be accessed;
1111 No access to the calibration level;
2222 No access to calibration and configuration levels;
3333 No access to calibration, configuration and tuning and alarms levels;

OFF

Figure 4 – Protection Disabled Figure 3 – Protection Enabled

Prot” and a hardware jumper can be used to disable access t o

ProtProt

Prot” parameter can only be

ProtProt

ON

4.3 OPERATION LEVEL

8888

After power up the indicator displays the m easured valued proportional to t he input
signal.

4.4 ALARMS LEVEL

A1SP

SP Alarm 1

A2SP

SP Alarm 2

AL.RE

Alarm
Reference

SETPOINT for Alarm 1: Triping point for alarm 1

SETPOINT for Alarm 2: Triping point for alarm 2

REFERENCE VALUE FOR DIFFERENTIAL ALARM: a value in respect to which

the differential, differential low and differential high alarms w ill be set.

4.5 CONFIGURATION LEVEL

TYPE

tYPE

Dp.pO

Decimal Point
Position

Vnit

unit

in.ll

Input Low Limit

1n.kl

Input High Limit

0ffs

OFFSET

A1fv

Alarm 1 Function

A2fv

Alarm 2 Function

Aiky

Alarm 1
HYsteresis

INPUT TYPE: Selects the input sensor type to be connected to the indicator (refer
to Table 1). This is the first parameter to be set.

DECIMAL POINT: Available only for input types 18, 19 or 20. Defines the number

of digits to be shown after the decimal point. Programmable from 0 to 3.

TEMPERATURE UNIT: Selects display indication for degrees Celsius or Farenheit.
0000 – degrees Celsius ( °(((( ); 1111 - degrees Farenheit ( °ffff );

INPUT LOW LIMIT: Available for input types f rom 9 to 20. Defines the lowest value
to be displayed when the input signal is at its lower value. For input types from 0 to
8 it defines the lowest alarm set point value.

INPUT HIGH LIMIT: Available for input types from 9 to 20. Defines the highest
value to be displayed when the input si gnal is at its upper value. For input types
from 0 to 8 it defines the highest alarm set point value.

SENSOR OFFSET: Offset value to be added to the PV to compensate sensor
error. Default value: zero

FUNCTION OF ALARM 1: Refer to Table 2 for function description and resp ective
codes to set at this prompt.

FUNCTION OF ALARM 2: Refer to Table 2 for function description and resp ective
codes to set at this prompt.

ALARM 1 HYSTERESIS: Defines the difference between the point at which the
alarm is activated and the point at which it is desactivated.

A2ky

Alarm 2
HYsteresis

Prot

ALARM 2 HYSTERESIS: Defines the difference between the point at which the
alarm is activated and the point at which it is desactivated.

PARAMETER PROTECTION: Refer to Table 2 for description of functions for this
prompt.

4.6 CALIBRATION LEVEL

These parameters are used to calibrate the t emperature measurement and should only be dealt with
by experienced and well equipped personnel.

Inl(

Input Low Calibration

InK(

Input High Calibration

(j L

Cold Junction 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 simu lator should be used to inject a low value signal to properly adjust the
offset.

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.

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.

A T E N T I O N

5 ALARM FUNCTIONS

Low and high alarms are used to signal minimum and maximum temperature values as programmed in the
“A1SP

A1SP” and “A2SP

A2SP” prompts.

A1SPA1SP

A2SPA2SP

Differential alarms are used to indicate deviations from the desired set point (SP
These deviations are programmed at the “A1SP

Table 2 shows each alarm function operation with their respective code. Alarm 1 is used as an example.

A1SP” and “A2SP

A1SPA1SP

A2SP” prompts.

A2SPA2SP

SP) temperature.

SPSP

TYPE CODE ACTION

SP

TEMPERATURE

TEMPERATURE

SP + SPA1

Alarm

ON

SP + SPA1SP

SP - SPA1

Alarm

SP + SPA1SP - SPA1 SP

TEMPERATURE

TEMPERATURE

TEMPERATURE

LOW

HIGH

LOW

differential

HIGH

differential

differential or

deviation

Input sensor

error

With alarm
inhibition at

power-up

SP

SPSP

SP

SPSP

SP

SPSP

SP

SPSP

SP

SPSP

SP

SPSP

Alarm ON

SPA1

SPA1

Alarm

ON

SP + SPA1 SP

SP + SPA1 SP

SP + SPA1 SP

Alarm

Alarm ON

Alarm ON

0000

1111

A1

A1SP

A1A1

Negative

2222

A1

A1SP

A1A1

Positive

A1

A1SP

A1A1

Negative

3333

A1

A1SP

A1A1

Positive

A1

A1SP

A1A1

Negative

4444

A1

A1SP

A1A1

Positive

Alarm is ON whenever:

• Temperature is below selected range;

• Temperature is above selecte d range;

5555

• Termocouple or Pt100 is broke n;

• Pt100 is shorted, badly connecte d or wire impedance is too high;

Low limit alarm disabled at power-up

6666

High limit alarm disabled at power-up

7777

Differential low limit alarm disabled at power-up

8888

Differential high limit alarm disabled at power-up

9999

Differential alarm disabled at power-up

10

10

1010

Table 2 - Alarm functions and their identification codes