The controller stores 20 independent process profiles with up to 50 segments per profile, supporting intra‑segment cycle, full‑profile cycle, time‑based mode and rate‑based curve mode. 10 groups of grouped PID parameters are available for different load characteristics. It accepts 35 types of industrial input signals including PT1000 RTD. Dual‑sensor functions support high‑low‑temperature smooth switching and sensor redundancy backup. 9‑channel programmable DIO (configurable DI/DO) enables up to 13‑channel alarm output and complex time‑mark sequence logic.

Available panel formats: JT2704TS (96×96 mm), JT2708TS (96×48 mm), JT27H8TS (48×96 mm). Widely used for heat‑treatment furnaces, ovens, environmental chambers, chemical reactors and laboratory equipment for high‑precision ramp‑and‑soak closed‑loop process control.

Key Features

☑️ IPS Color LCD with OVERVIEW Visual Indication Full 5‑digit high‑resolution display from ‑10000 to 30000. Simultaneously shows PV, SV, output %, program segment number, cycle count, DIO and alarm states. Parameter status highlighted by color change. Full local configuration via front‑panel keys without host‑computer software.

☑️ Powerful Program Curve Function 20 recipe storage slots, max 50 segments per profile. Supports time‑mode / rate‑mode operation; intra‑segment and full‑profile cycle. Functions include program fast‑forward / fast‑rewind, segment jump. Power‑fail recovery options: continue, ramp‑back, reset. Time‑mark DO outputs trigger external relays for batch thermal‑process sequences.

☑️ Grouped PID for Complex Load Conditions 10 sets of independent grouped PID parameters with output limit for each group. Improved PID algorithms support derivative‑before‑PV to suppress overshoot. Heat‑cool dual‑output control is available. PID groups can be auto‑selected by segment number, PV or SV value to match varying process‑load behavior.

☑️ Dual‑channel Input, Sensor Switching & Redundancy Dual isolated input channels supporting 35 industrial signal types (thermocouple, PT1000 RTD, mV, mA, voltage). Smooth high‑low‑temperature sensor switching; fail‑over redundancy when primary sensor breaks. Second channel can serve for valve‑position feedback, remote SV setpoint or PV‑difference alarm.

☑️ Dual‑port Communication, Optional Ethernet, Master‑mode Networking Two isolated Modbus‑RTU RS485 ports, optional Modbus‑TCP Ethernet. The controller can act as Modbus master to drive multiple SCR power regulators for fully‑digital system control. Synchronize SV set‑value across multiple controllers. 32‑bit float data compatible with PLC / SCADA / HMI systems, up to 64 units on one bus.

☑️ 9‑Channel Programmable DIO for Alarm & Sequence Logic Each DIO channel can be configured as digital‑input DI or open‑collector digital‑output DO. DI triggers: program start / hold / segment‑jump, SV switch, group‑PID selection. DO supports high‑limit, low‑limit, deviation, sensor‑break, program‑end and profile time‑mark outputs, realizing up to 13 alarm‑logic paths for interlock and timing applications.

☑️ Flexible Output & Hardware Configuration Output options: relay, solid‑state relay, SCR, 4‑20 mA / 0‑10 V analog. Transmitter output can transmit PV, SV, output or PV‑SV deviation. Servo valve‑position closed‑loop control supported. Analog remote SV set‑point available.

☑️ Industrial‑grade Hardware Protection 2000 V AC isolation between input, output and power supply. Power supply: AC 90‑260 V or DC 24 V. Front‑panel IP66 rating. Configurable alarm hysteresis & delay to avoid relay chattering. User‑selectable fail‑safe output strategy for sensor‑break conditions.

Main Specifications

Item	Specification
Model	JT2704TS(96×96) / JT2708TS(96×48) / JT27H8TS(48×96)
Accuracy	0.1 grade
MCU	32‑bit RISC industrial microprocessor
Display	IPS‑TFT color LCD, 5‑digit, OVERVIEW color‑change UI
Analog Input	Dual isolated channels, 35 signal types including PT1000
Program Profile	20 recipes, max 50 segments each; time / rate mode, segment cycle support
PID Control	10 grouped PID sets; derivative‑before‑PV; heat‑cool dual‑output; output limit
Sensor Function	High‑low‑temp switching; sensor redundancy; multiple cold‑junction compensation modes
DIO	9‑channel configurable DI/DO; open‑collector DO; time‑mark output; up to13‑alarm logic
Output Types	Relay / SSR / SCR / 4‑20mA / 0‑10V analog; valve feedback servo control
Communication	Dual Modbus‑RTU RS485; optional Modbus‑TCP Ethernet; Modbus master networking
Dielectric Strength	2000 V AC 1 min (input‑output‑power isolation)
Power Supply	AC 90‑260V or DC24V
Max Power Consumption	≤12W
Front‑panel Rating	IP66
Operating Ambient	0~50℃, ≤85%RH non‑condensing
Cut‑out Dimension	JT2704TS:92×92mm; JT2708TS:92×45mm; JT27H8TS:45×92mm