Introduction
Brainchild C21 is a 1/32 DIN size panel mount electronic temperature controller. This temperature control unit is powered by 11-26 or 90-250 VDC/VAC supply, incorporating a 2 amp. control relay output as standard. The second output can be used as cooling control, an alarm or dwell timer. Its fast sampling rate allows the unit to control fast processes. The C21 model is widely applied in the following industries: plastic/rubber injection molding, vacuum furnace equipment, semiconductor temperature process control program, ceramic sintering furnace, fiber dyeing and drying, etc.
The Fuzzy Logic plus PID microprocessor-based temperature controllers, incorporate one bright, easy to read 4-digit LED display, indicating process value and set point value. The Fuzzy Logic technology enables a process to reach a predetermined set point in the shortest time, with the minimum of overshoot during power-up or external load disturbance.
Brainchild C21/C91 Established process and temperature controllers the Fuzzy Logic plus PID microprocessor-based temperature controller, incorporate one bright, easy to read 4-digit LED display, indicating process value and set point value. The Fuzzy Logic technology enables a process to reach a predetermined set point in the shortest time, with the minimum of overshoot during power-up or external load disturbance.
Brainchild C21/C91 General Information
As a professional and experienced manufacturer, we supply high-performance and quality temperature controllers, which are also called temperature control, electronic temperature control, electronic temperature controller, and PID controller.
- Easy-to-use
- Fuzzy modified PID heat & cool control
- Fast A-D sampling rate (5 times/s)
- Universal input (PT100, thermocouple)with high accuracy 18-bit A-D
- Analog output (linear current or voltage)uses high accuracy 15-bit D-A
- RS-485 RS-232 interface
- Programming port provided on board
- Support manual control & auto-tune function
- Wide variety of alarm mode selection
- Lockout protection control
- Bumpless transfer during failure mode
- Soft-start ramp and dwell timer
- Bright display stabilized with digital filter
- Front panel sealed to NEMA 4X & IP65(model C21)
- UL/CSA/CE approval
- High performance with low cost
Specification
Power
- 90 – 250 VAC, 47 – 63 Hz, 10VA, 5W maximum
- 11 – 26 VAC / VDC, SELV, Limited Energy, 10VA, 5W maximum
Input 1 Characteristics
- Resolution 18 bits
- Sampling Rate 5 times / second
- Maximum Rating -2 VDC minimum, 12 VDC maximum( 1 minute for mA input )
- Temperature Effect
- ±1.5 uV/ °C for all inputs except mA
- input ±3.0 uV/ °C 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 ) 120dB
- 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 1 | |||
|---|---|---|---|
| Type | Range | Accuracy@ 25 °C | Input Impedance |
| J | -120 ~ 1000 °C (-184 ~ 1832 °F) | ±2 °C | 2.2MΩ |
| K | -200 ~ 1370 °C (-328 ~ 2498°F) | ±2 °C | 2.2MΩ |
| T | -250 ~ 400°C (-418 ~ 752°F) | ±2 °C | 2.2MΩ |
| E | -100 ~ 900 °C (-148 ~ 1652 °F) | ±2 °C | 2.2MΩ |
| B | 0 ~ 1800 °C (32 ~ 3372 °F) | ±2 °C (200°C – 1800°C) | 2.2MΩ |
| R | 0 ~ 1767.8 °C (32 ~ 3214 °F) | ±2 °C | 2.2MΩ |
| S | 0 ~ 1767.8 °C (32 ~ 3214 °F) | ±2 °C | 2.2MΩ |
| N | -250 ~ 1300 °C (-418 ~ 2372 °F) | ±2 °C | 2.2MΩ |
| L | -200 ~ 900 °C (-328 ~ 1652 °F) | ±2 °C | 2.2MΩ |
| PT100 (DIN) | -210 ~ 700 °C (-346 ~ 1292 °F) | ±0.4°C | 1.3KΩ |
| PT100 (JIS) | -200 ~ 600 °C (-328 ~ 1112 °F) | ±0.4°C | 1.3KΩ |
| mV | -8 ~ 70mV | ±0.05% | 2.2MΩ |
| mA | -3 ~ 27mA | ±0.05% | 70.5Ω |
| V | -1.3 ~ 11.5V | ±0.05% | 650KΩ |
| Output 1 / Output 2 | Linear Output Characteristics |
|---|---|
| Relay Rating | 2A/240 VAC, life cycles 200,000 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 | 10KΩ min. |
| 1-5 V | 0.9-1 V | 5-5.25 V | 10KΩ min. |
| 0-10 V | 0 V | 10-10.5 V | 10KΩ min. |
Linear Output | |
|---|---|
| Resolution | 15 bits |
| Output Regulation | 0.02 % for full load change |
| Output Settling Time | 0.1 sec. ( stable to 99.9 % ) |
| Isolation Breakdown Voltage | 1000VAC |
| Temperature Effect | ±0.01 % of SPAN / °C |
Triac ( SSR ) Output | |
|---|---|
| Rating | 1A / 240 VAC |
| Inrush Current | 20A for 1 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( Output 2 ) | |
|---|---|
| Alarm 1 Relay | Form A,Max. rating 2A/240VAC, life cycles 200,000 for resistive load. |
| Alarm Functions | Dwell timer, Deviation High / Low Alarm, Deviation Band High / Low Alarm Process High / Low Alarm |
| Alarm Mode | Normal, Latching, Hold, Latching / Hold. |
| Dwell Timer | 0.1 – 4553.6 minutes |
Data Communication | |
|---|---|
| Interface | RS-232 ( 1 unit ), RS-485 ( up to 247 units ) |
| Protocol | Modbus Protocol RTU mode |
| Address | 1 – 247 |
| Baud Rate | 0.3 ~ 38.4 Kbits/sec |
| 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, 0-1V, 0-5V, 1-5V, 0-10V |
| Resolution | 15 bits |
| Accuracy | ±0.05 % of span ±0.0025 %/ °C |
| Load Resistance | 0 – 500 ohms ( for current output ),10 K ohm minimum ( for voltage output ) |
| Output Regulation | 0.01 % for full load change |
| User Interface | |
|---|---|
| Single 4-digit LED Displays | 10mm (C21, C91) |
| Keypad | 3 keys(C21), 4 keys(C91) |
| Programming Port | For automatic setup, calibration and testing |
| Communication Port | 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 – 100.0 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 ~ 900.0°F/minute or 0 ~ 900.0 °F/hour ramp rate |
| Sleep Mode | Enable or Disable |
| Ramping Control | 0 ~ 500.0 °C/minute or 0 ~ 500.0 °C/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 & Physical | |
|---|---|
| Operating Temperature | -10°C ~ 50°C |
| Storage Temperature | -40°C ~ 60°C |
| Humidity | 0 to 90 % RH ( non-condensing ) |
| Altitude | 2000m maximum |
| Pollution | Degree 2 |
| Insulation Resistance | 20 Mohms min. ( at 500 VDC ) |
| Dielectric Strength | 2000 VAC, 50/60 Hz for 1 minute |
| Vibration Resistance | 10 – 55 Hz, 10 m/s² for 2 hours |
| Shock Resistance | 200 m/s² ( 20 g ) |
| Moldings | Flame retardant polycarbonate |
| Dimensions | C21 —50mm(W) X 26.5mm(H) X 110.5mm(D), 98.0 mm depth behind panel C91 —48mm(W) X 48mm(H) X 94mm(D), 86 mm depth behind panel |
| Mounting | C21 —panel mount, cutout 22 X 45( mm ) C91 —panel mount, cutout 45 X 45 ( mm ) |
| Weight | C21 — 120 grams C91 — 140 grams |
Approval Standards | |
|---|---|
| Safety | UL 61010C-1 , CSA C22.2 No. 24-93 , EN61010-1 (IEC1010-1) |
| Protective Class | NEMA 4X ( IP65 ) front panel for C21, IP30 front panel for C91, all indoor use, IP20 housing and terminals |
| EMC | EN61326 |
Brainchild C21/C91 Model
- C21 : 50x26mm
- C91: 48x48mm
- BTC-4100: 96x96mm
- BTC-7100 : 72x72mm
- BTC-8100: 48x96mm
- BTC-9100: 48x48mm
- BTC-9090: 48x48mm
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