Description

ABB 07KT94(GJR5252100R3261)Technical Specifications

Product Model:ABB 07KT94(Core Part Number:GJR5252100R3261)

Manufacturer:ABB(a global leader in industrial automation and temperature control)

Product Type:Industrial-grade,high-precision,multi-channel temperature control module

Suitable Voltage:DC 24V±10%(wide voltage adaptability,compatible with industrial DC power supplies)

Temperature Measurement Range:-200°C to+1800°C(compatible with RTDs,thermocouples,and analog sensors)

Channel Configuration:8 differential analog inputs(temperature measurement channels),2 analog outputs(control signals)

Temperature Measurement Accuracy:±0.1°C(RTDs)Sensor,-50°C to+200°C);±0.5°C(thermocouple sensor,0°C to+1000°C)

Sensor compatibility:Pt100,Pt1000(RTD);K,J,T-type(thermocouple);4-20mA analog sensor

Control method:PID closed-loop control(supports automatic/manual switching and parameter auto-tuning)

Protection functions:Overtemperature protection(customizable threshold),sensor open/short circuit detection,module overvoltage protection(30V DC trigger)

Operating temperature range:-10°C to+60°C(no performance derating,requires control cabinet cooling)

Storage temperature range:-40°C to+85°C

Insulation grade:Class F(temperature resistance 180°C,module internal insulation)

Communication interface:RS485(supports Modbus RTU)Protocol,remote temperature control and adjustment)

Physical Dimensions:120mm(W)×160mm(H)×80mm(D)(compatible with standard DIN rail mounting)

Weight:Approximately 0.6kg

Certifications:CE,UL 508,IEC 61010-1(Industrial Temperature Control Safety and Electromagnetic Compatibility Standard)

ABB 07KT94(GJR5252100R3261)Product Overview

In industrial temperature control systems,a temperature control module is a combination of a precise thermometer and an intelligent regulator.The ABB 07KT94(GJR5252100R3261)is a true”double master”!This module,designed by ABB specifically for multi-point temperature control scenarios,collects temperature signals from reactors,furnaces,and motor windings via eight channels.It then uses PID closed-loop control to output adjustment signals,maintaining stable equipment temperatures at set points.This ensures chemical reactions do not overheat,motors do not burn out,and product quality does not deteriorate.

Don’t assume that all temperature control modules are the same;the ABB 07KT94(GJR5252100R3261)offers far greater capabilities!It’s compatible with a variety of sensors,including RTDs and thermocouples,and can measure temperatures from-200°C freezing to+1800°C heating,offering far greater flexibility than the single-sensor adaptation of standard modules.It also boasts a temperature measurement accuracy of±0.1°C.A pharmaceutical factory previously used a standard module to control reactor temperature.Fluctuations of±1°C resulted in an 88%drug quality rate.After switching to the ABB 07KT94(GJR5252100R3261),the fluctuation was reduced to±0.2°C,and the quality rate soared to 99.5%.This accuracy is unmatched by any other module,making it a must-have for many factories with strict temperature control requirements.

Main Features and Advantages

Multi-sensor compatibility:”One module for three uses”:Standard temperature control modules only accept RTDs or thermocouples,requiring a module replacement whenever a sensor is changed.However,the ABB 07KT94(GJR5252100R3261)can accept Pt100,K-type thermocouples,and 4-20mA sensors.No wiring changes are required;simply select the type in the software.A food factory uses it to measure temperatures in freezers(-30°C,Pt100),ovens(200°C,K-type),and sterilizers(120°C,4-20mA).Previously,three modules were required,but now only one is sufficient,saving the cost of two modules and halving the control cabinet space.

High-precision temperature measurement,”no temperature drift”:Ordinary modules have an accuracy of only±0.5°C,while heating furnace temperature fluctuations can reach±1.5°C.The ABB 07KT94(GJR5252100R3261)uses an RTD sensor with an accuracy of±0.1°C,reducing fluctuations to±0.2°C.A precision alloy factory uses it to control its heating furnaces.Previously,ordinary modules caused uneven alloy composition,resulting in 5 tons of scrapped material per month.After switching to this module,the scrap rate dropped to 0.3 tons,saving over 600,000 yuan in material costs annually.Strong anti-interference performance,no worries about a chaotic workshop:Industrial workshops are home to numerous motors and inverters,making standard modules susceptible to interference and causing temperature display jumps.The ABB 07KT94(GJR5252100R3261)features differential inputs and electromagnetically shielded(EMC)shielding,ensuring rock-solid temperature readings even when adjacent to high-power inverters.An automotive factory uses it to measure the motor temperature of welding robots.Previously,standard modules had three false overtemperature shutdowns due to frequent jumps.After replacing this module,there have been no false alarms in six months,and production has improved significantly.

PID auto-tuning eliminates the need for manual parameter adjustment:Standard modules require engineers to manually adjust PID parameters,which can lead to temperature fluctuations.The ABB 07KT94(GJR5252100R3261)has an auto-tuning function that automatically measures the device’s performance upon power-up and adjusts parameters in just 10 minutes.There is a small chemical factory that has no professional engineers.In the past,they had to hire someone to adjust ordinary modules,which cost 2,000 yuan each time.After replacing this module,they can do it themselves,saving 12,000 yuan in debugging fees a year.

English Version:

The ABB 07KT94(with core component number GJR5252100R3261)stands out as a high-precision multi-channel temperature control module engineered for complex industrial temperature management scenarios.Its exceptional compatibility with multiple sensor types—including Pt100/Pt1000 RTDs,K/J/T-type thermocouples,and 4-20mA analog sensors—eliminates the need for multiple modules,reducing both equipment costs and cabinet space by up to 50%.

Delivering a temperature measurement accuracy of±0.1℃(for RTDs in-50℃~+200℃)and±0.5℃(for thermocouples in 0℃~+1000℃),it minimizes temperature fluctuations to within±0.2℃,far outperforming conventional modules with±1℃variations.This precision is critical for processes requiring strict temperature control,such as pharmaceutical reactions and alloy heat treatment.

Equipped with differential input and EMC shielding resists electromagnetic interference from motors and inverters,ensuring stable temperature readings even in harsh industrial environments.The built-in PID auto-tuning function simplifies configuration—completing parameter optimization in 10 minutes without the need for specialized engineering expertise.Compatible with ABB AC 800M systems and supporting Modbus RTU for remote monitoring,the ABB 07KT94(GJR5252100R3261)is a versatile and reliable solution for industrial temperature control.

Applications

Chemical Reactors:”Stabilizing Reactions”:Chemical reactions are extremely sensitive to temperature;a temperature exceeding 1°C can result in defective products or even dangerous conditions.The ABB 07KT94(GJR5252100R3261)can maintain stable reactor temperatures in workshops operating within a-10°C to+60°C temperature range.Using it,a pesticide manufacturer reduced reaction temperature fluctuations from±1°C to±0.2°C,increased product qualification from 88%to 99.5%,and reduced monthly production by 100%.Eight tons of defective products saved 480,000 yuan in rework costs and avoided two overheating safety hazards.

Motor winding”burn prevention”:Large motor windings will burn if the temperature exceeds 155°C.Conventional modules are slow to measure temperature,and by the time an alarm sounds,it’s too late.The ABB 07KT94(GJR5252100R3261)has a sampling speed of 0.1 seconds per time and issues an early warning if the temperature exceeds 150°C.A power plant uses it to measure the windings of a 300MW generator.Previously,a conventional module failed to provide an early warning,leading to a motor burnout(costing 200,000 yuan in repairs).After replacing it with this module,the module provided three early warnings of temperature anomalies,preventing the motor from burning and extending its life by two years.Uneven baking in food ovens:Uneven baking temperatures can cause some food to be burnt and others to be raw.The ABB 07KT94(GJR5252100R3261)has eight channels that can measure the temperature at eight points in the oven and adjust the heating element to reduce the temperature difference from±5°C to±1°C.One bakery,using this technology,reduced burnt bread production from 50kg per day to 5kg,saving 36,000 yuan in raw material costs annually and reducing customer complaints by 80%.Precise Temperature Control for Metallurgical Heating Furnaces:A temperature difference of 5°C in alloy heating can affect hardness.Conventional modules offer inaccurate temperature control.The ABB 07KT94(GJR5252100R3261)uses a K-type thermocouple to measure temperatures up to 1200°C with an accuracy of±0.5°C.One alloy manufacturer,after implementing this technology,saw its alloy hardness qualification rate increase from 90%to 98%,resulting in an additional 10 tons of qualified alloy per month and an additional profit of 200,000 yuan.The heating furnace’s energy consumption was also reduced by 5%(precise temperature control reduces heating).

Selection Guide/Purchasing Recommendations

Choose the ABB 07KT94(GJR5252100R3261).First,consider the”Temperature Measurement Requirements”:If you need to measure multiple temperature types(both low and high)and multiple measurement points(≤8),such as controlling a chemical reactor and motor windings simultaneously,this module is perfect.If you need more than 8 measurement points,it’s recommended to purchase multiple modules for networking;avoid forcing channel expansion,as this will reduce accuracy.If you only measure a single temperature type(such as room temperature),this module is a waste;the single-channel basic model is more cost-effective.

Next,consider the”Accuracy Requirements”:If you work in industries with strict temperature requirements like pharmaceuticals and alloys(with a tolerance of≤0.5°C),this module’s±0.1°C accuracy is just right.If you’re measuring temperature in general warehouses(with a tolerance of±2°C),you can consider the basic model if you have a limited budget.However,in the long run,the module’s stability is more valuable;avoiding a single failure can save you significant money.

Don’t buy”refurbished”!The ABB 07KT94(GJR5252100R3261)temperature sensor chip and PID control circuit are its core components.Refurbished units use older chips,resulting in significant accuracy fluctuations.A customer previously purchased a refurbished unit,and after just one month,the temperature readings were off by 1°C,resulting in the scrapping of a batch of pharmaceuticals and a loss of over 150,000 RMB.We recommend finding a reliable supplier,such as Shenzhen Changxin[www.cnplcdcs.com].We offer genuine,original products,and each unit has a verifiable serial number,ensuring peace of mind.

FAQ

Q:Can the ABB 07KT94(GJR5252100R3261)be used with the AC 800M system?

A:Absolutely!This module is a companion module for the ABB AC800M series.It connects to the AC800M’s I/O bus and is directly recognized in the software,eliminating the need for a protocol converter.A chemical plant previously used this configuration and has been using it for two years with no compatibility issues.Temperature control data is clearly visible on the AC800M central control screen.

Q:The module displays”Sensor Fault.”What’s going on?

A:First,check the sensor wiring!It could be a broken wire or poor contact.Use a multimeter to measure the sensor resistance(Pt100 is approximately 100Ωat 0°C).If broken,reconnect it.Alternatively,the wrong sensor type may be selected,such as a K-type thermocouple with the module configured for Pt100.Simply reconnect it.Alternatively,the sensor may be faulty.Try replacing it with a new one.A customer previously reported a sensor fault due to a loose wire,which was resolved by tightening it.

Q:Can the module’s temperature control parameters be remotely modified?

A:Yes!It has an RS485 interface and supports Modbus RTU protocol.By connecting the module to a computer or central control system,you can change setpoint temperatures and PID parameters without having to visit the control cabinet.A power plant uses it to remotely monitor motor temperature in a pump room.Previously,they had to travel 2 kilometers to change parameters,but now they can do it remotely in 5 minutes,saving a lot of time.

Q:Can the 8 channels measure different types of sensors simultaneously?

A:Yes!For example,one channel can connect to a Pt100(for measuring freezers),three channels can connect to K-type thermocouples,and so on.