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  5. Classic Premium Series | 96 x 96 mm  BTC-4100

Classic Premium Series | 96 x 96 mm

BTC-4100
https://www.brainchildtw.com/web/image/product.template/67/image_1920?unique=74d9fbf

PID Temperature controller

• 96×96mm panel mount (1/4 DIN)
• Fuzzy PID control with auto-tuning
• Universal input: TC, RTD, mV, mA
• RS-485/232 Modbus RTU supported
• Ramp/Soak profile with dwell timer

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Features Applications Specification Download FAQ Ordering Code

Features

  • 96×96mm panel mount (1/4 DIN)
  • Universal input: TC, RTD, mV, mA, voltage
  • Dual 4-digit LED display for PV and SV
  • 18-bit A/D converter for high resolution input
  • Fast 5 samples/sec input sampling rate
  • Auto/manual mode with bumpless transition
  • Ramping function with adjustable slope rate
  • Auto-tuning with fuzzy logic PID adjustment
  • Digital filter to stabilize fluctuating signals
  • Cold and warm start auto-tune supported
  • Sensor break detection for process safety
  • Lockout levels for parameter protection
  • Configurable alarm: high, low, band, dwell
  • Output 2 can be set as dwell timer function
  • Relay, SSR, or analog output options
  • Built-in Modbus RTU via RS-232 or RS-485
  • USB programming port for PC-based setup

Modular PID Controller for Process Automation

Fuzzy PID, multi-output, RS-485, ramp/soak profile


This compact PID controller is designed to deliver reliable and intelligent temperature or process control for a wide range of industrial applications. Featuring universal input compatibility, a high-resolution 18-bit A/D converter, and multiple output options such as relay, SSR voltage drive, or analog signal, it offers flexibility for both basic and advanced control environments.

The controller integrates fuzzy logic auto-tuning, supports RS-232 and RS-485 Modbus RTU communication, and includes a ramp/soak program with dwell timer, making it ideal for precise, automated control in OEM equipment, production lines, and control panels.

LED Display Panel with Simple Key Control

Clear indicators and tactile keypad ensure easy operation

The front panel interface features a bright dual 4-digit LED display, providing real-time feedback of process value (PV) and set value (SV) simultaneously. This high-contrast display ensures clear visibility even in low-light industrial environments.

Multiple status indicators are clearly arranged to present operating conditions at a glance, including:

  • Output activity

  • Alarm state

  • Auto-tuning (AT) status

  • Manual mode (MAN)

  • Engineering unit display (UNIT)

These indicators help users monitor the control state with minimal effort, enhancing situational awareness and reducing errors during setup or adjustments.

The controller includes a tactile keypad with four intuitive buttons: Scroll, Up, Down, and Enter. The keys provide positive feedback for each press and support smooth navigation across parameter settings. This layout makes the controller easy to operate even in space-constrained panels or time-critical applications, improving work efficiency on the shop floor.

Universal Input Support with High Accuracy

Accepts TC, RTD, mV, mA and voltage signals  

The controller supports universal input signals, including:

  • Thermocouple: J, K, T, E, N, R, S

  • RTD: Pt100 DIN / JIS

  • Analog: 0–50 mV, 0–20 mA, 4–20 mA, 0–5V, 1–5V

Equipped with an 18-bit A/D converter, the input circuitry offers high accuracy, fast 5Hz sampling rate, and cold junction compensation for thermocouples. Signal stability is further enhanced by digital filtering and sensor break detection, ensuring safe, reliable operation in demanding process environments.


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.

Dedicated Programming Port for Easy Setup

Touch-port with special cable for offline configuration

The controller features a dedicated touch-type programming port, designed for use with the CC91-1 programming cable. This port allows fast and reliable offline parameter setup, calibration, and ATE-based testing, connecting to a PC or automated test equipment without accessing the main terminals.

To ensure system integrity, this port is intended for setup and testing only. It should be disconnected during normal operation. Optional adapters such as the SNA12A can convert this port for RS-232 communications if required.

BC-SET Pro Configuration Software

Easy parameter setup, backup and firmware upgrade

BC-SET Pro is the official configuration software developed by BrainChild for its over-temperature protection controllers. With a streamlined and intuitive interface, the software allows users to connect via USB programming cable and quickly configure control parameters. It supports efficient parameter editing, setting duplication between devices, and firmware upgrades to maintain device performance and stability. BC-SET Pro also enables offline configuration with the ability to save and manage multiple profiles, making it ideal for production environments, system deployment, and ongoing maintenance. Whether for new setup or existing system adjustment, this tool helps engineers and technicians simplify workflow, reduce setup time, and ensure consistent configuration across all devices.  

Batch Read/Write for Multiple Controllers 

BC-SET allows users to connect multiple controllers of the same model and perform batch parameter read/write by defining a node address range. This feature significantly streamlines configuration in OEM or multi-device environments.

Clear and Accessible System Menu 

The system menu offers quick access to key operations like Rescan (F5), Read Data (F6), Write Data (F7), Write Multiple (F8), and Communication Settings (F9). Built-in hotkeys support fast, efficient navigation.

Intuitive Communication Setup Interface

The communication settings window lets users define COM port, baud rate, parity, data bits, and stop bits — with a “Default” button for quick reset and “Save and Exit” to finalize setup. Designed to reduce setup errors.

Visual Profile Editor for Programmable Controllers 

For controllers with profile functionality, BC-SET provides a graphical editor to configure temperature ramp/soak segments. Users can easily read, modify, and write profile parameters for precise thermal process control.

Standard IP50 Panel, Optional IP65 Upgrade

Terminals IP20; suitable for indoor applications only

The controller's standard front panel protection is IP50, offering basic shielding against solid particles. For higher protection, an optional water-resistant rubber seal can be installed, upgrading the panel rating to IP65, ideal for use in environments with dust or water spray.

The housing and terminal block are rated IP20, providing minimal ingress protection. The unit is designed for indoor use only, and should be installed inside a protective enclosure for long-term reliability and safety in industrial control systems.

Applications

Specification


 Power

90 ~ 250 VAC, 47 ~ 63 Hz, 12VA, 5W maximum

11 ~ 26 VAC / VDC, 10VA, 5W maximum
 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

0.55" ( 14mm )

Lower Display Size

0.4" ( 10mm )

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

Dimensions (W*H*D) (mm)

96*96*65

Depth Behind Panel (mm)

53

Cut Out Dimensions (mm)

92*92

Weight (grams)

250
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

ClassicPremiumSeries _Brochure_V1.01_EN

ClassicPremiumSeries _Brochure_V1.01_CH
ClassicPremiumSeries_UserManual_UM91001I_EN
ClassicPremiumSeries_UserManual_UM91003C_CH

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/

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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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