1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of the Rittal Cabinet Air Conditioning Temperature Controller, model PZRISNH001. This electronic temperature controller is designed for precise temperature management in industrial cabinet air conditioning systems. Please read this manual thoroughly before installation and operation to ensure safe and efficient use.
2. Safety Information
- Installation and maintenance should only be performed by qualified personnel.
- Ensure the power supply is disconnected before performing any wiring or maintenance.
- Verify that the voltage and current ratings of the controller match your application's requirements.
- Use only copper conductors for wiring connections.
- Protect the device from moisture, dust, and extreme temperatures.
- Do not operate the device if it appears damaged.
3. Product Overview
The Rittal PZRISNH001 is an electronic temperature controller featuring a digital display and intuitive controls for managing cabinet air conditioning. It includes inputs for NTC temperature probes and relay outputs for controlling cooling or heating elements.
3.1 Components
- Controller Unit: Main device with display and control buttons.
- NTC Temperature Sensor: For accurate temperature measurement.
- Removable Terminal Blocks: For secure electrical connections.
3.2 Front Panel Controls and Display
- Digital Display: Shows current temperature, set points, and error codes.
- Power Button: Turns the device on/off.
- Mute Button: Silences audible alarms.
- Set Button: Used to enter programming mode and confirm settings.
4. Specifications
| Feature | Specification |
|---|---|
| Model | PZRISNH001 |
| Type | Electronic Temperature Controller |
| Operating Voltage | 230V~ |
| Current Rating | 10(10)A (EN60730-1), 12A 10FLA 60LRA (UL875) |
| Temperature Probe Type | NTC Probes |
| Temperature Range | -10 to 50 °C (approximate, based on '-10T50' marking) |
| Standards | EN60730-1, UL875 |
| Origin | Mainland China |
| SKU/Part Number | WT100002 |
5. Setup and Installation
Proper installation is crucial for the safe and correct operation of the temperature controller. Always ensure power is disconnected before beginning installation.
5.1 Mounting
The controller is designed for panel mounting. Ensure adequate space for ventilation and access to wiring terminals.
5.2 Wiring Diagram
Refer to the diagram on the back of the unit (Figure 2) for precise wiring connections. Use the provided removable terminal blocks for secure connections.
- Power Input (L, N): Connect the main 230V~ power supply to terminals L and N.
- Control Outputs (1, 2, 3): These are relay contacts for controlling external devices (e.g., compressor, fan). Connect your load circuits to these terminals as per your system design.
- NTC Probes (4, 5, 6): Connect the NTC temperature sensor(s) to these terminals. Ensure correct polarity if specified by the sensor. The image shows three terminals for probes, suggesting support for multiple sensors or a specific configuration.
- Conductor Type: Always use copper conductors for all electrical connections.
Warning: Incorrect wiring can cause damage to the device, electrical shock, or fire. Consult a qualified electrician if unsure.
6. Operation
Once installed and powered, the controller will display the current temperature. Use the front panel buttons to configure and operate the device.
6.1 Power On/Off
Press the Power button (usually marked with a circle and vertical line) to turn the unit on or off.
6.2 Setting Temperature and Parameters
Press the Set button to enter the parameter setting mode. The display will typically show a parameter code or the current set point. Use the arrow buttons (if present, or repeated presses of Set/Mute in some models) to navigate through parameters and adjust values. Press Set again to confirm changes and exit programming mode.
Common parameters include:
- Set Point (SP): The desired temperature.
- Differential/Hysteresis (dIF): The temperature difference before the output changes state again.
- Probe Calibration: Adjusting the sensor reading if necessary.
- Alarm Thresholds: Setting high or low temperature alarm limits.
6.3 Alarm Management
If an alarm condition occurs (e.g., temperature outside set limits), the controller may trigger an audible alarm and display an error code. Press the Mute button to silence the audible alarm. Address the underlying cause of the alarm condition.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Rittal temperature controller.
- Cleaning: Periodically clean the front panel with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Connection Check: Annually inspect all wiring connections for tightness and signs of corrosion. Ensure terminal blocks are securely seated.
- Sensor Inspection: Check the NTC temperature sensor and its cable for any physical damage. Ensure it is properly positioned to measure the desired temperature.
- Software/Firmware: There are no user-upgradable software components.
8. Troubleshooting
If you encounter issues with your temperature controller, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller does not power on. | No power supply; incorrect wiring; internal fuse blown. | Check power connections (L, N). Verify power source. Consult a technician for internal issues. |
| Incorrect temperature reading. | Faulty NTC sensor; sensor incorrectly placed; wiring issue. | Check sensor connections (4, 5, 6). Ensure sensor is in the correct measurement area. Replace sensor if damaged. |
| Control output (e.g., cooling) not activating. | Set point not reached; differential setting too wide; faulty relay; incorrect wiring. | Verify set point and differential settings. Check wiring to control outputs (1, 2, 3). Test external device. |
| Audible alarm sounds frequently. | Temperature consistently outside alarm thresholds; alarm thresholds set too narrow. | Check system operation to ensure temperature is stable. Adjust alarm thresholds if necessary. |
8.1 User Tips
- For critical applications, consider installing a secondary temperature monitoring system.
- Keep a record of your parameter settings for quick restoration after power outages or resets.
- Ensure the NTC sensor is placed in a location representative of the cabinet's internal temperature, away from direct airflow from cooling units or heat sources.
9. Warranty and Support
For warranty information or technical support, please contact your Rittal distributor or the point of purchase. When contacting support, please have your model number (PZRISNH001) and any relevant error codes ready.
The manufacturer's contact information may also be available on the product packaging or official Rittal documentation.
