NOVUS N440 - Manual

TEMPERATURE CONTROLLER
N440
OPERANTING MANUAL - V1.1x
The N440 is a digital temperature controller in 1/16 DIN size with 2 ON/OFF outputs
for control and alarm. Its 3½ digit display is used for temperature indication as well as
for parameter configuration. Easy to configure, the N440 is intended for use in
furnaces, ovens, fryers, etc., delivering accurate temperature measurements with
excellent immunity to electromagnetic fields. Three sensor types are available (Pt100
and thermocouples J or K) with sensor offset correction.
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.
CAUTION or WARNING:
Read complete instructions prior to
installation and operation of the unit.
CAUTION or WARNING:
Electrical Shock Hazard
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 manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
SPECIFICATIONS
Sensor Input: The sensor type is defined in the production process. Check the
instrument label to find out the input type of your particular model. The available
sensors options are:
Pt100; range: –50 °C to 530 °C (-58 to 986 °F); Accuracy: 1 °C (1.8 °F);
α =385. 3-wire connection. Excitation current: 0.170 mA;
Thermocouple J; 0 to 600 °C (32 to 999 °F); Accuracy: 2 °C (3.6 °F);
Thermocouple K; 0 to 1370 °C (32 to 2498 °F); Accuracy: 3 °C (5.4 °F);
Measurement resolution:
Pt100: 0,1 °C in the range –19.9 to 199.9 °C/°F, 1 °C/°F otherwise
Thermocouples: 1 °C/°F;
Output 1 (OUT1) (check instrument label for installed option)
Relay SPDT: 3 A / 250 Vac (3 A / 30 Vdc);
Output 2 (OUT2) (check instrument label for installed option)
Relay SPST-NO 1.5 A / 240 Vac (1.5 A / 30 Vdc);
Logic pulse: 5 Vdc, 15 mA max;
Power supply:
100 to 240 Vac/dc or 24 Vac/dc ± 10 % (check instrument label for installed option);
Frequency: 50/ 60 Hz; Power consumption: 2 VA
Environmental conditions: Temperature: 5 to 50 °C. Relative humidity (maximum): 80 %
up to 30 ºC. For temperatures above 30 ºC, decrease 3 % per ºC. Installation category II.
Pollution degree 2. Altitude < 2000 m.
EMC: EN 61326-1:1997 and EN 61326-1/A1:1998.
SAFETY: EN61010-1:1993 and EN61010-1/A2:1995
Warm-up time: 15 minutes;
Housing: Front panel: Polycarbonate UL94 V-2; Rear case: ABS+PC UL94 V-0
Dimensions: 48 x 48 x 110 mm. Panel cut-out: 45,5 x 45,5 mm; Weight: 150 g
OVER-TEMPERATURE PROTECTION
When designing any control system it is essential to consider what will happen if any
part of the system should fail. In temperature control applications the primary danger is
one in which the heating remains constantly on. In any application where physical
injury or destruction of equipment might occur, it is recommend to install an
independent protection equipment, with a separate temperature sensor, to disable the
heating circuit in case of overheating. Please note that the alarm relays within the
controller will not give protection under all failure conditions.
INSTALLATION
Panel mounting: Insert the unit into the panel cut-out and slide the mounting clamp
from the rear to a firm grip at the panel.
Electrical connections:
All electrical connections are made to the screw terminals at the rear of the controller.
They accept wire sizes from 0.5 to 1.5 mm2 (16 to 22 AWG). The terminals should be
tightened to a torque of 0.4 Nm (3.5 lb in).
Routing of wires
To minimize the pick-up of electrical noise, the low voltage DC connections and the
sensor input wiring should be routed away from high-current power conductors. If this
is impractical, use shielded cables. In general, keep cable lengths to a minimum.
It is strongly recommended to install RC filters (47 R and 100 nF, serial combination) at
contactor coils and other inductors.
WARNING: System failure should always be taken into account when designing a
control panel to avoid irreversible damage to equipment or people.
The figure below shows the N440 connections to mains, sensor and outputs.
Figure 1 – N440 back panel terminals
The installation must include a power isolating switch or circuit breaker
that disconnects all current carrying conductors. The device should be
mounted close to the controller, within easy reach of the operator and
marked as the disconnecting device for the instrument.
Wire sensor and outputs according to figure 1.
OPERATION
Before the controller is ready to be used in a given process, it requires some basic
configuration. The parameters are arranged in 4 levels:
Level Access Function
0 - Temperature measurement
1 Set point for output OUT1
2 holding for 2 seconds Set point for output OUT2
3 holding for 6 seconds Parameter configuration
4 holding for 10 seconds Calibration
After power-up, the controller will display the firmware version for 1 second. This
information is important for traceability and when contacting the manufacturer.
The instrument then shows the temperature measured by the sensor. This is the level
0 or temperature measurement level.
Pressing will lead to level 1, causing the display to alternate between the
messages “ SP1 SP1 SP1 SP1” (set point 1) and the programmed value. To go back to level 0, press
again.
To reach level 2, press for 2 seconds until the parameter “ sp2 sp2 sp2 sp2” is displayed.
Release the key to stay in this level. To go back to level 0, press again.
To enter level 3, press the key for 4 seconds and the parameter “ Ac1 Ac1 Ac1 Ac1” will be
displayed. Release the key to stay in this level. Press to access other parameters
in this level. At the end of this cycle, the controller will return to level 0.
To enter the calibration level (level 4) press the key for 10 seconds.
To change a parameter setting, press the keys and until the desired value is
reached.
The new configuration value is saved in the controller by pressing the key (when
advancing to the next parameter in the level).
PROGRAM SECURITY
To avoid tampering, parameter “ Prot Prot Prot Prot” and a hardware jumper can be used to disable
access to programming parameters.
With the jumper in the OFF position, all program levels are unprotected. The “
Prot Prot Prot Prot”
parameter can only be 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 Prot Prot” parameter:
0 00 0 No protection. All parameters can be accessed;
1
11 1 No access to the Calibration level;
2
22 2 No access to Calibration and Configuration levels;
3
33 3 No access to Calibration, Configuration and SP2 levels;
4 44 4 Full protection.
OFF ON
Figure 2 – Protection Disabled Figure 3 – Protection Enabled
LEVEL 1 –OUT1 SET POINT
Parameter Description/Parameter function
SP1 SP1 SP1 SP1
Set Point 1
Temperature set point associated to the OUT1 output. Possible
values are limited by the parameters
SPL SPL SPL SPL e SPk SPk SPk SPk in level 3