Why does my Carel pCO Controller turn on and off repeatedly?
If the Carel Controller turns on and off repeatedly, or activates digital or analog outputs, examine the power cables to ensure they are distant from the main board microprocessors. Verify the power transformer is adequately sized. Ensure you're using metallic mounting hardware when attaching the main card to the electrical panel.
How to fix Carel Controller serial connection failure to local supervisor?
To resolve a failure of the serial connection to the local supervisor on your Carel Controller, verify the presence and proper connection of the serial board code PCOSER0000. Ensure the identification number of the pCO unit is correctly set. Check the codes and proper connection of the serial cables used, referring to the Carel diagram. Ensure the serial cables are not disconnected.
What to do if Carel pCO has wrong input signal reading?
To address wrong input signal readings on the Carel Controller, check the probe connection and ensure that probe cables are away from noise sources like power cables or high voltage cables. Calibrate the input via the program. Ensure proper power supply to both the main board and the probes. Also, separate the power supply of the digital inputs from the pCO's power supply.
How to troubleshoot failed connection to remote supervisor on Carel pCO Controller?
To address a failed connection to the remote supervisor with your Carel Controller, check the power supply to the Gateway and modems. Verify the Gateway's programming. Ensure the modem is suitable for the Carel serial network.
How to fix Carel Controller that does not start?
If the Carel Controller unit doesn't start, check the mains, ensure there are 24V~ after the 230V~ - 240V~ power transformer, and verify the 24V~ power connector is correctly plugged in. Inspect the fuse of protection and ensure the proper connection between the terminal unit and the main board.
What causes a Carel Controller user terminal not to work?
If the user terminal on your Carel Controller isn't working (locked keypad), it may have been disconnected and reconnected too quickly. Turn the pCO off and on again with the terminal connected. Also, check that the EPROM has been correctly inserted.
What to check for uncertain alarm signal from digital input on Carel Controller?
If you encounter an uncertain alarm signal from a digital input on your Carel Controller, check the input alarm signal by detecting the voltage between the "C" common terminal and the digital input terminal indicating the "Cn" alarm. If voltage is present (24V~ or V, according to the power supply being used for the digital inputs) the contact of the connected alarm device is closed. If voltage is 0V~ or 0V the contact is open. The controller gives an alarm whenever the contacts are open, unless stated otherwise.
What to do if Carel pCO Controller shows alarm LED, no messages, or buzzer at start-up?
If, at start-up of your Carel Controller, the alarm LED is on, the LCD shows no messages or random messages, or the buzzer is on, check the EPROM polarity. Also, check the pins of the EPROM, ensuring they aren't bent when inserting it into its socket. If the microprocessor chip is damaged, contact the Maintenance Service.
Why is my Carel pCO showing wrong reading of the input signals?
To troubleshoot wrong reading of the input signals on your Carel Controller, check the probe connection. Ensure the probe cables are distant from electromagnetic noise sources, such as power cables and high voltage cables. Verify there isn't high thermic resistance between the sensor and the probe socket; if needed, add conductive paste or oil to the sockets. For probe or conversion errors, the verifications depend on the probe type.
General| Connectivity | RS-485, Ethernet |
|---|---|
| Display | LCD |
| Input/Output | Configurable |
| Power Supply | 24 VAC/DC |
| Type | Programmable Controller |
| Analog Outputs | Up to 4 |
| Serial Communication | RS-485 |
| Protocols | Modbus |
| Input Voltage | 24 VAC/DC |
| Protection Rating | IP20 |
| Communication | RS-485, Ethernet |
| Relay Outputs | Up to 8 |
Introduction to the PCO Sistema product range and its capabilities.
Details on the controller's general features, programmability, and hardware architecture.
Detailed description and diagram of the PCO³ controller, including its connectors and key functions.
Technical specifications for PCO³ analogue inputs, digital inputs, and analogue outputs.
Details the features and specifications of PCO³ digital outputs, including relay types and ratings.
Electrical specifications for the PCO³ controller, including power supply, CPU, and memory.
Technical specifications for PCO¹ analogue inputs, digital inputs, and analogue outputs.
Details the features and specifications of PCO¹ digital outputs, including relay types and ratings.
Technical specifications for PCOS analogue inputs, digital inputs, analogue outputs, and digital outputs.
Mechanical specifications for the PCOS controller, including dimensions and operating conditions.
Technical specifications for PCO analogue inputs, digital inputs, analogue outputs, and digital outputs.
Overview of graphic terminals, including PGD0/pGD1 and PGD2/pGD3 models and their features.
Instructions for connecting user terminals (like pGD) to the pCO controller using specific cables.
Information on maximum distances for terminal and pCO connections based on cable types.
Comprehensive guide to installing the PCO controller, covering environmental conditions, positioning, and wiring.
Details on power supply requirements and connections for PCO controllers.
Guidance on connecting various types of analogue input sensors to the pCO controllers.
Instructions for connecting digital inputs to PCO controllers, covering 24 Vac and 24 Vdc types.
Instructions for connecting 0-10V and PWM analogue outputs on PCO controllers.
Instructions for connecting digital outputs, including electromechanical relay and SSR types.
Overview of the pLAN network capabilities for connecting PCO controllers and devices.
Step-by-step guide for installing and configuring pGDO and pGD1 terminals on a pLAN network.
Instructions for installing and configuring pGD2 and pGD3 terminals, including network settings.
Guide for installing and configuring the Aria terminal, including parameter setup.
Procedure for setting the pLAN network address for various pCO controller models.
Details on wiring pCO controllers for pLAN network connections, including cable types and diagrams.
Guidelines for remotely installing terminals in a pLAN network, including distance limitations and cable types.
Technical specifications for the pLAN network, including baud rate, protocol, and maximum length.
Overview of optional boards for pCO controllers, covering communication and expansion capabilities.
Describes serial boards for RS485, RS232 modem, Ethernet, BACnet, and CANbus communication.
Details on serial boards for tLAN, MP-Bus, and RS232 modem connections.
Information on external modules like humidifier interfaces and their connections.
Description of the DC/DC power supply module for pCO controllers.
Information about the SMART KEY for programming and data management of pCO controllers.
Describes conditions that cause the pCO to enter "LOW LEVEL" status, impacting operation.
Details on using the WinLoad software for updating firmware, applications, and logs for pCO controllers.
Information on using the SMARTKEY for programming, cloning, and data transfer operations.
Describes the NAND FLASH memory feature available on specific pCO3 versions for file storage.
How to check installed software versions, system information, log data, and device ID.
Description of the pLAN protocol, its capabilities, and specifications for connecting pCO devices.
Details on the local terminal protocol for point-to-point terminal connections to pCO controllers.
Explanation of the CAREL Slave protocol for interfacing with supervisors and other systems.
Information on the CAREL Master protocol for communicating with peripherals and I/O expansions.
Details on the CAREL Master 5 expansions protocol for I/O peripherals.
Description of the WinLoad protocol for managing pCO controllers via software.
Information about the PST protocol for numeric LED terminals.
Details on the Modbus Slave protocol for interfacing with Modbus supervisory systems.
Explanation of the Modbus Master protocol for acquiring and writing variables to Modbus Slave devices.
Specifics of the Modbus Master protocol for Benshaw VFD control.
Information on the PSTN protocol for connecting to remote supervisors or WinLoad via modem.
Details on the GSM protocol for remote supervision, WinLoad, and SMS messaging.
Description of the MP-Bus protocol for managing BELIMO actuators.
Information on connecting pCO controllers to printers or terminal emulators via RS232.
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