CJD-9000P Programmable Temperature Controller Instruction Manual

1. Introduction

1.1 Product Overview

The CJD-9000P intelligent industrial regulator is designed for precise measurement and control of temperature in industrial processes. It combines temperature and timer functions in a 2-in-1 ramp soak PID temperature controller, offering advanced programmable capabilities.

1.2 Main Functional Features

• Supports multiple signal inputs including thermocouples and thermal resistors.
• Capable of storing up to 4 program curves, each with up to 20 segments (ramps).
• Equipped with dual output functions for heating/cooling control.
• Optional control outputs: relay contact switch or solid-state relay (SSR) drive voltage.
• Optional RS485 serial communication using MODBUS-RTU protocol for comprehensive instrument control.
• Self-tuning function for optimized control.
• Measurement value correction function.
• Decimal point setting function.
• Power-off memory function.

1.3 Operating and Working Conditions

The instrument is suitable for non-corrosive environments with temperatures ranging from 0 to 50 °C and humidity ≤ 85% RH. It operates on a globally recognized 85-260VAC input range switching power supply.

1.4 Structural Features and Working Principle

The instrument features a plug-in structure, allowing for easy separation from the casing for maintenance. Functional boards are connected via connectors, ensuring a modular design. The working principle involves signal conversion and channel selection through the input interface, followed by VFC type A/D conversion. The MCU processes output pulses, and the display module presents results. Control and alarm outputs manage functions, while the communication module handles data transmission and centralized monitoring. A storage module saves all settings and debugging data.

1.5 Package Contents

• 1 x CJD-9000P Thermostat
• 1 x English Instruction Manual

CJD-9000P Thermostat with RS485 function and temperature curve graph.

2. Setup

2.1 Wiring Diagrams

Ensure all wiring is performed by a qualified professional and that power is disconnected before making any connections.

2.1.1 SSR Output Version Wiring

Wiring diagram for SSR output version of the thermostat with a heater and thermocouple. Connect AC85-265V power to terminals 8 and 9. Connect the thermocouple to terminals 1 and 2. Connect the SSR output to terminals 10 and 11. The SSR then controls the heater power supply.

2.1.2 RELAY Output Version Wiring

Wiring diagram for RELAY output version of the thermostat with an intermediate relay, heater, and thermocouple. Connect AC85-265V power to terminals 8 and 9. Connect the thermocouple to terminals 1 and 2. The RELAY output controls an intermediate relay, which in turn controls the heater power supply.

2.2 Initial Configuration

Upon first power-on, the instrument will automatically enter a stop state. Refer to the 'Operating Instructions' section for detailed parameter settings and basic operations.

3. Operating Instructions

3.1 Display Status

After about 1 second of powering on, the instrument enters the basic state (state ①). The upper display window shows the measured value (PV), and the lower display window shows the set value (SV).

The 8 LED indicator lights on the instrument panel indicate the following:

• RUN: Instrument is running.
• STOP: Instrument is in a stopped state.
• HOLD: Instrument is in a paused state.
• MAN: Manual control is active.
• OUT1, OUT2, OUT3, OUT4: Corresponding outputs are activated.

3.2 Basic Operations

3.2.1 Parameter Settings

Press and hold the SET button for approximately 2 seconds in the basic state (state ①) to enter the parameter setting state (state ⑦). The upper display window will show the parameter name, and the lower display window will show the parameter value. Use the ∧ and ∨ keys to modify the parameter value. Press SET to confirm and switch to the next parameter. If the parameter lock is enabled, the last digit of the parameter value will flash, and modification is prohibited. Hold SET for about 2 seconds to return to the previous parameter. Simultaneously holding ∧ and ∨ keys can return to the basic state; if there is no button action for more than 30 seconds, it will automatically return to the basic state.

3.2.2 Manual Control

Manual control is prohibited by default. To enable, set the ten digits of the 'run' parameter to 1. In manual control state, the instrument no longer performs PID calculation, and the output value can be directly modified using the ∧ and ∨ keys. Switching between manual and automatic control is done via the SET button. Manual control is prohibited if: control method Ctrl is set to 0 (ON-OFF control); during self-tuning process; or if the manual control is not enabled (ten digits of the run parameter are set to 0).

3.2.3 Self-Tuning

Press and hold the SET button in basic mode for about 2 seconds. The display window under the instrument panel will flash with 'At', indicating self-tuning has started. During self-tuning, the instrument performs ON-OFF control. After 1.5 cycles of oscillation, the internal microprocessor calculates the PID parameters. If you wish to give up self-tuning, press ∧ and hold for about 2 seconds to stop. The 'At' character flashing in the lower display window indicates self-tuning. If the self-tuning process is successful, the instrument automatically sets the hundred digit of the run parameter to 0. If self-tuning fails, it will automatically stop. If an instrument has already started self-tuning, it needs to restart self-tuning again. The run parameter can be set to 1 or 2 to start self-tuning from the panel.

3.3 Program Layout Instructions

3.3.1 Function and Concept

• Program segment: Segment numbers range from 1 to 20. StEP represents the currently executing segment.
• Set time: The running time (1-9999) for each program segment, in minutes or seconds.
• Running time: The time that has already been running within the current segment.
• Loop: The program can be configured to automatically jump to segments 1-20 for execution, enabling loop control.
• Run/Hold program: In a stopped state (lower display shows 'Stop'), press and hold SET for about 2 seconds. The display will show 'run', and the instrument will start running the program. Press and hold SET for about 2 seconds while running to enter a pause state ('HoLd').
• Stop: Executing a stop operation will halt the program, resetting the running time, stopping time, and stopping control output.
• Power outage/startup event: Multiple solutions are provided for unexpected power outages.
• Event output: Program-generated event output (OUT3) can control external devices for synchronization or interlocking.
• Measurement value activation function: This function addresses deviations between the actual measured value and the program's set value after power outages or manual modifications.

Example temperature ramp-soak program curve.

3.3.2 Example Program Setting

Consider the following program:

1. Rise temperature from 100°C to 400°C during 30 minutes.
2. Hold temperature at 400°C for 120 minutes.
3. Fall from 400°C to 300°C during 50 minutes.
4. Pause, with OUT3 relay action.
5. Manual release from pause state.
6. Prepare section.
7. Start from the 1st segment, loop.

To set this program:

• Segment 1: Set C01=100, t01=30. (Linear heating from 100°C for 30 minutes)
• Segment 2: Set C02=400, t02=120. (Heat up to 400°C with a heating slope of 10°C/min. Constant temperature time is 120 minutes)
• Segment 3: Set C03=400, t03=50. (Cooling stage, cooling time of 50 minutes, cooling slope of 2°C/min)
• Segment 4: Set C04=300, t04=-200. (Cool down to 300°C, turn on switch OUT3 and enter pause mode)
• Segment 5: Set C05=300, t05=-501. (Operator executes the operation and jumps to the first segment of operation, while closing OUT3)

Detailed temperature curve diagram showing rise, constant temperature, fall, pause, and prepare sections.

4. Specifications

4.1 General Specifications

• Power Supply Voltage: 80-260VAC, 50/60Hz
• Dimensions: 72mm x 72mm x 72mm
• Time Unit: Minute / Second (user selectable)
• Set Time Range: 0-9999
• Output: RELAY output or SSR output (specified at purchase)
• Origin: Mainland China
• Use Environment: Indoor
• Battery: Not included
• High-concerned chemical: None

4.2 Input Specifications and Measurement Range

The instrument supports various input types, which can be freely switched via the keyboard.

Table of input specifications and measurement ranges for various thermocouple and RTD types.

4.3 Basic Error

± 0.2% FS ± 1 word (FS represents the difference between the upper and lower limits of the measurement range).

4.4 Sampling Period

<0.4s

4.5 Control Methods

Positional control, PID control, manual control.

5. User Tips

• Temperature Profile Programming: The controller fully supports temperature profile programming, allowing for automatic execution without constant intervention.
• Curve Storage: You can store up to 4 distinct temperature curves, each with its own set of programmed values.
• Segment Capacity: Each stored curve can accommodate up to 20 individual segments (ramps and soaks).
• Automatic Program Stop: The controller can be programmed to automatically stop after completing all steps in a curve.
• Manual Control & Pause: Manual stopping or pausing during a running curve is possible, offering flexibility in operation.
• Cyclic Operation: Curves can be programmed to run in a cycle automatically.
• Preparation Function (rdY): Utilize the 'Preparation' function to ensure the desired temperature is reached before proceeding to the next step, preventing premature transitions.
• Time Unit Selection: The time unit for programming can be set to either minutes or seconds, depending on your application's needs.
• Power Outage Recovery: In case of a power outage, you can configure the controller to either stop, restart from the first segment, or resume from the last step, providing continuity for your process.
• Heating Rate: While direct heating rate setting is not available, you can achieve desired rates by setting 'temperature - time - temperature' logic (e.g., C01=100, t01=20, C02=400 for a 20-minute rise from 100°C to 400°C).
• Output Type: Ensure you select the correct output type (RELAY or SSR) when ordering, as this determines the compatible heating/cooling elements.
• Sensor Compatibility: The controller supports a wide range of temperature sensors including K, S, R, T, E, J, B, N thermocouples, Pt100, Cu50 RTDs, and resistance inputs.
• Deviation during Transitions: Be aware that some temperature deviation may occur during heating or cooling stages. This is normal and proportional to the heating rate and instrument lag time. Adjusting the ramp/fall slope or adding buffer sections can help minimize overshoot.

6. Troubleshooting

6.1 Display Error Codes

• "HHHH" or "LLLL": If the instrument displays "HHHH" or "LLLL", it typically indicates an open circuit alarm for thermocouples or thermistors. Check the sensor wiring and ensure it is properly connected.

6.2 Common Issues

• Program not running: Verify that the controller is not in a 'Stop' state. Check the 'run' parameter settings for proper program execution.
• Inaccurate temperature readings: Ensure the correct input type (thermocouple/RTD) is selected in the settings. Check for proper sensor installation and calibration.
• Output not activating: Confirm the output type (RELAY/SSR) matches your heating/cooling element. Check wiring to the load and ensure control parameters are set correctly.
• Self-tuning issues: If self-tuning fails or does not complete, ensure the process is stable and there are no external disturbances. Restart self-tuning if necessary.

7. Warranty and Support

For any technical assistance, warranty claims, or support inquiries, please contact your seller or the manufacturer directly. Ensure you have your product model (CJD-9000P) and purchase details available when seeking support.