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  5. Classic Premium Series | 48 x 48 mm  BTC-9090

Classic Premium Series | 48 x 48 mm

BTC-9090
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PID Temperature controller

• Compact 1/16 DIN panel design
• Fuzzy logic + PID auto-tuning
• Ramp & dwell soft-start control
• Single-loop precision control
• Easy front keypad configuration

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Features Applications Specification Download FAQ Ordering Code

Features

  • Compact 48x48mm DIN panel mount design
  • High-accuracy universal input for T/C, RTD, mV
  • Supports 18-bit resolution and 3Hz sampling rate
  • Auto-tuning and manual PID adjustment supported
  • Single-stage ramp and dwell timer function
  • Configurable control output: Relay, SSR, Analog
  • Selectable linear current or voltage output
  • Alarm output with flexible logic options
  • Sensor break detection and safety protection
  • Intuitive 4-key interface for easy setup
  • Dual LED display for PV and SV monitoring
  • Supports heating/cooling or ON-OFF control
  • Optional RS-485/RS-232 for communication
  • User-configurable parameters and hysteresis
  • Wide power range: 90–264VAC or 20–32VDC

BTC-9090 Fuzzy PID Controller for Compact Installations 

The BTC-9090 is a microprocessor-based temperature controller designed for compact panel applications. Featuring fuzzy logic-enhanced PID control, the BTC-9090 ensures rapid set point attainment with minimal overshoot. It supports a wide range of thermocouples, RTDs, and linear signals, and offers both automatic and manual tuning modes for optimal flexibility. Ideal for applications requiring ramp/soak cycles, soft-start control, and precise process stabilization.

LED Display & 4-Key Compact Panel Control

Easy navigation with dual-display and intuitive keypad

The BTC-9090 features a compact 48×48mm front panel with a clear dual 4-digit LED display. The top line shows the process value (PV) and the bottom line shows the setpoint value (SV), allowing for quick reference during operation.

The front panel is equipped with four tactile keys:

  • UP / DOWN for value adjustment

  • SCROLL for parameter navigation

  • RETURN / ENTER to confirm or cancel entries

This layout enables easy setup and quick parameter access, even in tight installation spaces. The bright display ensures visibility under various lighting conditions.

Universal Input for T/C, RTD, mV & Voltage

High-accuracy A/D with wide signal compatibility   

BTC-9090 accepts a broad range of universal input types, including:

  • Thermocouple: J, K, T, E, N, R, S

  • RTD: Pt100 DIN / JIS

  • Linear: 0–50 mV, 0–5 V, 1–5 V

The unit uses a high-resolution 18-bit A/D converter with a sampling rate of 3Hz, delivering stable readings and precise process control. Cold junction compensation and digital filtering ensure input signal integrity even under industrial conditions.


Flexible Output Choices for Any Control Need  

Relay, SSR, and analog output types are selectable

The controller offers multiple output options for control and alarm use:

  • Relay contact: 250 VAC / 2A

  • SSR voltage drive: 12 VDC ±15%, 30 mA max

  • Analog output: 0–20 mA, 4–20 mA, 0–10 V, 1–5 V

Analog outputs are generated via a 15-bit D/A converter, ensuring high-resolution retransmission and smooth signal control. Each output channel can be independently configured for PID control, alarm logic, or dwell timer functions, providing great flexibility in system integration.

Fuzzy PID Technology   

Smarter Control with Less Overshoot and Faster Response  

Fuzzy logic is combined with traditional PID control to deliver smarter and more adaptive temperature regulation. Unlike standard PID controllers that require manual fine-tuning for each application, fuzzy PID dynamically adjusts control responses based on real-time process behavior. The result is faster stabilization, reduced overshoot, and improved resilience to disturbances—ideal for processes where precision and speed are critical.

Applications

Specification


 Power

90 ~ 264VAC, 50 / 60Hz 10VA

20 ~ 32VDC / VAC, 50 / 60Hz 10VA
 Signal Input

Resolution

18 Bits

Sampling Rate

5 times / second

Maximum Rating

-2 VDC minimum, 12 VDC maximum( 1 minute for mA input )

Temperature Effect

±1.5uV/ BC for all inputs except mA input
±3.0uV/ BC for mA input

Sensor Lead Resistance Effect

T/C: 0.2uV/ohm
3-wire RTD: 2.6 °C/ohm of resistance difference of two leads
2-wire RTD: 2.6 °C/ohm of resistance sum of two leads

Burn-out Current

200nA

Common Mode Rejection Ratio(CMRR)

120 dB

Normal Mode Rejection Ratio (NMRR)

55dB

Sensor Break Detection

Sensor open for TC, RTD and mV inputs, Sensor short for RTD input, below 1 mA for 4 ~ 20 mA input, below 0.25V for 1 ~ 5 V input, unavailable for other inputs.

Sensor Break Responding Time

Within 4 seconds for TC, RTD and mV inputs, 0.1 second for 4 ~ 20 mA and 1 ~ 5 V inputs.

Input characteristics

 Type

Range

Accuracy @ 25°C

Input Impedance

J

-120°C  ~ 1000°C( -184°F ~ 1,832°F)

±2°C

2.2 MΩ

K

-200°C ~ 1370°C (-328°F ~ 2498°F)

±2°C

2.2 MΩ

T

-250°C ~ 400°C ( -418°F ~  752°F )

±2°C

2.2 MΩ

E

-100°C ~ 900°C( -148°F ~ 1652°F )

±2°C

2.2 MΩ

B

0°C ~ 1800°C( 32°F ~  3272°F )

±2°C( 200°C ~ 1800°C )

2.2 MΩ

R

0°C ~ 1767.8°C( 32°F ~ 3214°F )

±2°C

2.2 MΩ

S

0°C ~ 1767.8°C( 32°F ~ 3214°F )

±2°C

2.2 MΩ

N

-250°C ~ 1300°C( -418°F ~ 2372°F)

±2°C

2.2 MΩ

L

 -200°C ~ 900°C( -328°F ~ 1652°F )

±2°C

2.2 MΩ

PT100(DIN)

-210°C ~ 700°C( -346°F ~ 1292°F )

±0.4°C

1.3KΩ

PT100(JIS)

-200°C ~ 600°C( -328°F ~ 1112°F )

±0.4°C

1.3KΩ

mV

-8mA  ~ 70mA

±0.05%

2.2MΩ

mA

-3mA  ~ 27mA

±0.05%

70.5Ω

V

-1.3V  ~ 11.5V

±0.05%

650KΩ
Output 1  / Output 2

Relay Rating

2A,240V AC,200000 Life Cycles for Resistive Load

Pulsed Voltage

Source Voltage 5V, Current Limiting Resistance 66Ω

Linear Output Characteristics

Type

Zero Tolerance

Span Tolerance

Load Capacity

4 ~ 20 mA

3.6 ~ 4 mA

20 ~ 21 mA

500Ω max.

0 ~ 20 mA

0 mA

20 ~ 21 mA

500Ω max.

0 ~ 5 V

0 V

5 ~ 5.25 V

10 KΩ min.

1 ~ 5 V

0.9 ~ 1 V

5 ~ 5.25 V

10 KΩ min.

0 ~ 10 V

0 V

10 ~10.5 V

10 KΩ min.
Linear Output

Resolution

15 Bits

Output Regulation

0.02% for full load change

Output Settling Time

0.1 Second ( Stable to 99.9%)

Isolation Breakdown Voltage

1000 VAC

Temperature Effect

±0.01% of  Span/ °C
Triac ( SSR ) Output

Rating

1A / 240 VAC

Inrush Current

20A for a cycle

Min. Load Current

50 mA rms

Max. Off-state Leakage

3 mA rms

Max. On-state Voltage

1.5V rms

Insulation Resistance

1000 Mohms min. at 500 VDC

Dielectric Strength

2500 VAC for 1 minute
 Alarm

Relay Type

Form C

Maximum Rating

2A, 240VAC, 200000 Life Cycles for Resistive Load

Alarm Functions

Dwell Timer, Deviation Low, Deviation High, Deviation Band Low, Deviation Band High, Process High, Process Low

Alarm Mode

Latching, Hold, Normal, Latching/Hold

Dwell Timer

0.1 ~ 4553.6 Minutes
 Data Communication

Interface

RS-232 ( 1 unit ), RS-485 ( up to 247 units )

Protocol

Modbus RTU (Slave Mode)

Address

1 ~ 247

Baudrate

2.4KBPS ~ 38.4 KBPS

Data Bits

7 or 8 Bits

Parity Bit

None, Even or Odd

Stop Bit

1 or 2 Bits

Communication Buffer

160 Bytes
Analog Retransmission

Output Signal

4 ~20 mA, 0 ~ 20 mA, 0 ~ 5V, 1 ~ 5V, 0 ~ 10V

Resolution

15 Bits

Accuracy

±0.05% of Span ± 0.0025% / °C

Load Resistance

0 to 500Ω for Current Output , 10KΩ minimum for Voltage Output

Output Regulation

0.01% for full load change
User Interface

Keypad

4 Keys

Display Type

4 Digit LCD Display

No. of Display

2

Upper Display Size

0.4" (10mm)

Lower Display Size

0.31"(8mm)

Failure Mode

Auto transfer to manual mode while sensor break or A-D Converter damage

Ramping Control

Connection to PC for supervisory control

Control Mode

Output 1

Reverse (Heating) or Direct (Cooling) Action

Output 2

PID cooling control, Cooling P band 50~300% of PB, Dead band -36.0 ~ 36.0 % of PB

ON-OFF

0.1 ~ 90.0 (°F ) hysteresis control ( P band = 0)

P or PD

0 ~ 100.0 % offset adjustment

PID

Fuzzy logic modified Proportional band 0.1 ~ 900.0°F, Integral time 0 ~ 3600 Seconds,Derivative time 0 ~ 360.0 Seconds

Cycle Time

0.1 ~ 90.0 Seconds

Manual Control

Heat(MV1) and Cool(MV2)

Auto-tuning

Cold Start and Warm Start

Failure Mode

Auto transfer to manual mode while sensor break or A-D Converter damage

Ramping Control

0 to 900.0°F/Minute or 0 to 900.0°F/Hour Ramp Rate
Digital Filter

Function

First Order

Time Constant

0,0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 Seconds Programmable
 Environmental and Physical Specifications

Operating Temperature

-10°C ~ 50°C

Storage Temperature

-40°C ~ 60°C

Humidity

0 ~ 90 % RH (Non-Condensing)

Altitude

2000 Meters maximum

Pollution

Degree II

Insulation Resistance

20MΩ minimum(@500VDC)

Dielectric Strength

2000VAC,50/60 Hz for 1 Minute

Vibration Resistance

10 to 55 Hz , 10m/s2 for 2 Hours

Shock Resistance

200 m/s2(20g)

Moldings

Flame Retardant Polycarbonate

Mounting

Panel / DIN Rail mount

Dimensions (W*H*D) (mm)

48*48*116

Depth Behind Panel (mm)

105

Cut Out Dimensions (mm)

45*45

Weight (grams)

150
Approval Standards

Safety

UL61010C-1, CSA C22.2 No.24-93, EN61010-1 ( IEC1010-1 )

Protective Class

IP65 for panel with additional option, IP50 for panel without additional option, IP20 for terminals and housing with protective cover.
All indoor use.

EMC

EN61326

Download

BTC-9090 _Brochure_EN
BTC-9090_UserManual_UM90901F_EN
Software_BC_Set_2.0​
Software_BC_Set_Pro_V1.1.0.12(Firmware above V31) 

C21&C91_UsersManual_UM0C911H_EN

Data_Logger_Firmware_XH10_v1.1.0.34​

Software_BC_Set_Pro_V1.1.0.12_2.0​
Software_DAQ_V2.73(2501)*1-hour trial only

Training_Demo_Data_Acquistion_Studio

UMEIO01A​
UMEIO01A​

IO_Brouchure_Ver.1.4/

Visit Download Center to See More Documents & Tools of This Product.     Visit

FAQ

What types of input signals are supported?

The controller supports thermocouple (J, K, T, E, N, R, S), RTD (Pt100 DIN/JIS), and analog signals such as mV, mA, and voltage (0–5V, 1–5V).  

Is the IP65 front panel standard or optional?

The standard panel is IP50. IP65 protection is available as an optional accessory by installing a water-resistant rubber gasket.  

Can the programming port be used during operation?

No. The programming port is for offline setup and testing only. It must be disconnected during normal operation.  

What communication options are available?

The controller supports RS-232 or RS-485 Modbus RTU communication as optional configurations.  

Can the controller perform ramp/soak profile control?

Yes. It supports multi-segment ramp/soak profile programming with dwell timer for precision process control.  

Ordering Code

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