The core control algorithm of the temperature regulator is PID control, P (Proportional) ratio + I (Integral) point + D (Differential) differential control. In addition to the traditional PID control algorithm, RKC also has ON-OFF control, self-defined parameter control, adaptive parameter control and other algorithms, with short temperature control stability time and fast corresponding speed.
The RKC temperature controller is a microcomputer bear that controls industrial heating equipment. The temperature range of industrial equipment controlled by industrial temperature controllers is generally -199°C-3000°C. The heating mechanism is generally carried out in the form of relays and solid relays, and the temperature regulator reads the actual temperature according to the signal sent back by the thermoelectric couple, compares the actual temperature value with the set temperature value, and produces a temperature deviation, and the adjustment direction is carried out in the direction of reducing the temperature deviation, and the RKC temperature regulator outputs analog quantity and switching quantity
Thermocouple sensors
Typically, industrial temperature controllers use thermocouple sensors to measure temperature values. Thermocouples have scale numbers, such as J, K, R, S, etc. Each index number thermocouple has its own unique temperature accuracy over different temperature ranges. Commonly used k-scale thermocouples have an accuracy range of 0-400°C and are a common temperature sensor. Another type of temperature sensor is a thermal resistance, commonly known as PT100, also known as platinum resistance. It has a relatively high accuracy and is generally used in the range of -199-649°C, and the price is slightly more expensive than thermocouples.
When the RKC thermostat came out, it was a single-loop regulator, that is, it only had a heating function, called the basic meter, which was generally sent to the agent, and the agent expanded the function of multi-channel adjustment and alarm output control, commonly known as meter changing, so as to ensure that the hardware cost was very small to achieve multi-functional expansion, which is a function that other thermostats do not have. In addition, the input range and alarm range of the RKC thermostat can be set by software and parameters, which is more convenient, and the overcurrent protection function can be achieved by adding the current transformer, 485
The abbreviation Rockwell (ab) is an abbreviation for founder Allen Allen - Bradiey Bradley. Alan Bradley & Co. was founded in 1903 by Dr. Stantonalen and Lind Bradley. Early products mainly include automatic starters, switchgear, current circuit breakers and relays.
Rockwell Automation, Inc. (NYSE: ROK) is the world's largest industrial automation and information company dedicated to helping customers improve productivity and a more sustainable world. Rockwell Automation is headquartered in Milwaukee, Wisconsin, United States.
Rockwell researches industrial automation, avionics and communications, and e-commerce. With more than 500,000 products, annual sales of $6.4 billion, and 22,000 employees, it has more than 450 sales and technical support organizations in more than 80 countries, more than 5,600 authorized distributors, system integrators and solution providers, and research centers around the world.
Rockwell Automation (China) Co., Ltd. was incorporated on May 24, 2001 in the Free Trade Zone Market Supervision and Administration Bureau. The legal representative is Robert Laverne Buttermore III, whose business scope includes providing business decision-making and management consulting services for the parent company and other affiliated enterprises entrusted by the parent company and the enterprises in which it invests.
Rockwell Automation (China) Co., Ltd. cooperates with 15 domestic authorized distributors, 124 recognized system integrators, more than 30 Asia-Pacific strategic partners and global strategic alliances to provide manufacturing enterprises with a wide range of world-class products, solutions and service support.
The servo controller can easily convert the operation module and the fieldbus module through the automation interface, and use different fieldbus modules to achieve different control modes (RS232, RS485, optical fiber, InterBus, ProfiBus), while the control mode of the general inverter is relatively simple.
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Specifications and models
CH102 (48×48×100mm)
CH402 (48×96×100mm)
CH902 (96×96×100mm)
1. RH400 size: 48*96, depth 60, about 250g
1. Thermocouples: K, J, R, S, B, E, N, T, W5RE/W6RE, PL‖, U, L
2. Temperature measurementRTDInput:PT100、JPT100
3. Tributary voltage: DC0 - DC5V, DC1 - DC5V
Sampling period: 0.5s
Measurement accuracy: Thermocouple: ± (0.3% of displayed value + 1 digit) or ± 2 degrees Temperature measurement resistance: ± (0.3 + 1 digit of displayed value)
(DC0/12V) allowedLoad resistanceAbove 600 ohms, it can be heated and cooled with dual output control (output 1: heating side; Output 2: Cooling side)
Optional heater disconnection alarm and control loop disconnection alarm
2. CH402 size: 48*96, depth 100, about 250g
1. Temperature measurementRTDInput:PT100、JPT100
2. Tributary voltage: DC0 - DC5V, DC1 - DC5V
3. Tributary current: DC0-20MA, DC4-20MA (250 ohm external resistance required)
Sampling period: 0.5s
Optional heater disconnection alarm and control loop disconnection alarm
2-wire type is optionalRS-485communication
3. CD901 size: 96*96 depth 100, about 340g
1. Temperature measurement resistance input: PT100, JPT100
2. Tributary voltage: DC0 - DC5V, DC1 - DC5V
3. Tributary current: DC0-20MA, DC4-20MA (250 ohm external resistance required)
Multiple alarm types: upper limit input value, lower limit input value, upper limit deviation, lower limit deviation, upper and lower limit deviation, upper and lower range setpoint, lower limit setpoint (standby operation can be attached)
Sampling period: 0.5s
Measurement accuracy: Thermocouple: ± (0.3% of displayed value + 1 digit) or ± 2 degree temperature measurement resistance: ± (0.3% of displayed value + 1 digit) or ± 0.8 degrees tributary voltage/current input: ± (0.3% of displayed value + 1 digit)
(DC0/12V) allowedLoad resistance600 for driveTRIAC(Three-terminal duplex.)ScrTrigger output: Trigger mode - zero cross type, on-current: 50 mA (50 degrees), 70 mA (25 degrees) for zero cross type Medium capacity TRIAC (used to drive loads below 100 a) * Heating/cooling type cannot be used for TRIAC (three endsTriacsOutput:rating0.5A (ambient temperature 40 degrees Celsius or less)
Optional heater disconnection alarm and control loop disconnection alarm
2-wire type is optionalRS-485communication
4. FB900 size: 96*96*60
Abundant inputs and outputs
Automatic/manual, local/remote direct switching
Multi-area function: Up to 8 different settings can be registered for the master setting, etc., and cumbersome settings can be changed in a lump package. Zones can also be switched via an optional external contact input.
By combining the multi-storage function to connect the number of the other area, the duration of the area, and the setting of the limit of the rate of change, it is possible to run the program up to 16 segments (8 steps).
Frequently used data (up to 16 items) can be freely listed in consecutive addresses, which greatly reduces data transmission and enables high-speed communication.
Joint operation can be carried out using communication
PID control: The sampling cycle can be switched to 0.05s, which corresponds to the high-speed heating process. A new type of heat-and-cool PID that inhibits undershoot on the cooling side. You can switch between the controls of "heating, cooling, heating and cooling, and position ratio".
5. CH102 size: 48*48, depth 100mm about 170g
1. Temperature measurementRTDInput:PT100、JPT100
2. Tributary voltage: DC0 - DC5V, DC1 - DC5V
3. Tributary current: DC0-20MA, DC4-20MA (250 ohm external resistance required)
Sampling period: 0.5s
Measurement accuracy: Thermocouple: ± (0.3% of displayed value + 1 digit) or ± 2 degree temperature measurement resistance: ± (0.3% of displayed value + 1 digit) or ± 0.8 tributary voltage/current input: ± (0.3% of displayed value + 1 digit)
Control Output: Relay Contact Output: 1c Contact (AC250 3A) Resistance Load Voltage Pulse Output: (DC0/12V) AllowedLoad resistanceMORE THAN 600 OHMS CURRENT OUTPUT: (DC4 - 20MA) ALLOWABLE LOAD RESISTANCE ABOVE 600 OHMS CAN BE HEATED AND COOLED DUAL OUTPUT CONTROL (OUTPUT 1: HEATING SIDE; Output 2: Cooling side)
Optional heater disconnection alarm and control loop disconnection alarm
2-wire type is optionalRS-485communication
Wiring method[url=]edit[/url]
Take CD901 as an example,
L(1) pin to 220 volt live wire,
N(2) pin 220 volt neutral wire,
3,4 pins for the first output,
5,6 pins for the second output,
7, 8, 9 pins are alarm output,
The last three pins are connected to temperature sensors such as thermocouples or PT100s
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