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N323R
TEMPERATURE CONTROLLER – USER GUIDE – V1.8x M
1.
SAFETY ALERTS
The following symbols are used on the equipment and throughout this
manual to draw the user's attention to important information related to
the safety and use of the equipment.
CAUTION:
Read the manual completely
before installing and operating the
equipment.
All safety recommendations appearing in this manual must be followed
to ensure personal safety and prevent damage to the instrument or
system. If the instrument is used in a manner other than that specified
in this manual, the device safety protections may not be effective.
2.
SUMMARY
1. SAFETY ALERTS ........................................................................ 1
2. SUMMARY .................................................................................. 1
3. INTRODUCTION ......................................................................... 1
4. SPECIFICATIONS ....................................................................... 1
5. ELECTRICAL CONNECTIONS ................................................... 2
5.1 INSTALLATION RECOMMENDATIONS .............................. 2
6. OPERATION................................................................................ 2
6.1 LEVEL 1 – SETPOINT ADJUSTMENT LEVEL ................... 2
6.2 LEVEL 2 – OPERATION LEVEL ......................................... 2
6.3 LEVEL 3 – CALIBRATION LEVEL ...................................... 3
7. WORKING WITH THE CONTROLLER ....................................... 4
7.1. DEFROST PROCESS .......................................................... 4
8. CONFIGURATION PROTECTION .............................................. 4
9. MASTER PASSWORD ................................................................ 4
9.1 HOW TO USE YOUR MASTER PASSWORD ..................... 4
10. ERROR INDICATION .................................................................. 5
11. WARRANTY ................................................................................ 5
3.
INTRODUCTION
N323R is a temperature controller suitable for refrigeration. It has
functions specially designed for temperature control and defrost
optimization applications.
The equipment has two input channels for temperature sensors (NTC
thermistor type) that measure the temperature of the monitored
environment and the evaporator module. In addition, it has three
independent outputs for controlling the compressor (refrigeration
output), the defrost module and the fan.
The features of each controller are identified on the identification
label, attached to the equipment, and are in accordance with the
purchase order.
NOVUS AUTOMATION
CAUTION OR HAZARD:
Risk of electric shock.
4.
SPECIFICATIONS
PROBE INPUT:
2 Thermistor NTC
Type 10 kΩ @ 25 °C
Range: -50 to 120 °C (-58 to 248°F)
Accuracy: 0.6 °C (1.1 °F)
Note: The sensors come with the equipment.
Its operating range is limited to -30 to +105 °C (–222 to +221 °F). It
has cable of 3 m in length, 2 x 0.5 mm², and can be extended up to
200 meters.
Maximum error in the interchangeability of original NTC sensors:
0.75 °C (33.35 °F). This error can be eliminated through the Offset
parameter of the equipment.
Measurement resolution: ........................... 0,1° from -19.9 to 119.9°
......................................................................................... 1° elsewhere
Note: The equipment keeps its precision all over the range, despite
the lack of display resolution in a part of the range does not allow its
visualization.
OUTPUT1:
Relay SPDT; 1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resistive)
Optionally: Pulse, 5 Vdc, 25 mA max.
OUTPUT2:
Relay SPST-NO, 3 A / 250 Vac
OUTPUT3:
SPST-NO, 3 A / 250 Vac
POWER SUPPLY:
Voltage: 100 to 240 Vac/dc ±10 %
Optionally: 24 V (12 to 30 Vdc)
Mains frequency: 50~60 Hz
Power consumption: 5 VA
DIMENSIONS:
Width x Height x Depth: 75 x 33 x 75 mm
Panel cut-out: 70 x 29 mm
Weight: 100 g
ENVIRONMENT:
Operating temperature: 0 to 40 °C (32 to 104 °F)
Storage temperature: -20 to 60 °C (-4 to 140 °F)
Relative humidity: 20 to 85 %RH
Protection: Front panel: IP65, Box: IP42.
RS485 digital communication, RTU MODBUS protocol (optional).
Serial interface not isolated from input circuitry.
Serial interface isolated from input circuitry, except in 24 V
Housing: Polycarbonate UL94 V-2.
Suitable wiring: Up to 4.0 mm².
powered model.
1/5

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Summary of Contents for Novus N323R

  • Page 1 INTRODUCTION Storage temperature: -20 to 60 °C (-4 to 140 °F) Relative humidity: 20 to 85 %RH N323R is a temperature controller suitable for refrigeration. It has functions specially designed for temperature control and defrost Housing: Polycarbonate UL94 V-2. optimization applications.
  • Page 2: Electrical Connections

    N323R ELECTRICAL CONNECTIONS 3. When in Temperature Measurement mode, by giving a short touch on the key, the controller will temporarily show The figure below indicates the connection terminals for the sensor, the temperature value measured by sensor 2 − Evaporator power, and controller output: temperature.
  • Page 3 N323R time programmed in this parameter. turned off when the temperature in the evaporator (Sensor 2) rises to the value set in FA.S. Typically used to increase the lifespan of the compressor in a refrigeration system. Situations with heated evaporator are common, for example, after defrost and draining processes.
  • Page 4: Configuration Protection

    N323R In this mode, the refrigeration output will also be switched Allows you to enable the Defrost function. Whenever dF.E off. it is enabled, its parameters will be displayed at the Defrost Enable General Configuration level. 3. In defrost by compressor cycle inversion, the refrigeration output will not be turned off.
  • Page 5 N323R 10. ERROR INDICATION On the display, the controller shows messages that correspond to problems related to the temperature measurement. Whenever they are displayed, the control output relay will be turned off. • The temperature has exceeded the upper limit of the sensor range.

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