C21 – 50x26mm Electronic Temperature Controller

Low cost process and temperature controller.

C21 Features

Autotuning controller with fuzzy logic + PID processing.
Configurable input: Thermocouple or RTD.
Outputs: mA, SSR drive, Relay (Please specify when ordering)
Selectable alarm modes
1 alarm relay.
Standard Power supply: 90~240Vac.
Soft start ramp and dwell timer
4 digit display.
IP65 front panel and IP20 house and terminals
Low cost, easy to use

Brand: BRAINCHILD
Usually in stock

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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.
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.

Power

90 – 250 VAC, 47 – 63 Hz, 10VA, 5W maximum

111 – 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 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.

TYPE	Range	Accuracy@25°C	Input Impedance
J	-120°C -1000°C (-184°F -1832°F)	±2°C	2.2MΩ
K	-200°C -1370°C (-328°F -2498°F)	±2°C	2.2MΩ
T	-250°C -400°C (-418°F -752°F)	±2°C	2.2MΩ
E	-100°C -900°C (-148°F -1652°F)	±2°C	2.2MΩ
B	0°C -1820°C (32°F -3308°F)	±2°C (200°C – 1820°C)	2.2MΩ
R	0°C-1767.8°C (32°F -3214°F)	±2°C	2.2MΩ
S	0°C -1767.8°C (32°F -3214°F)	±2°C	2.2MΩ
N	-250°C -1300°C (-418°F -2372°F)	±2°C	2.2MΩ
L	-200°C -900°C (-328°F -1652°F)	±2°C	2.2MΩ
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	-8mV -70mV	±0.05%	2.2MΩ
mA	-3mA -27mA	±0.05%	70.5Ω
V	-1.3V-11.5V	±0.05%	302KΩ

Output 1 / Output 2
Relay Rating	2A/240 VAC, life cycles 200,000 for resistive load
Pulsed Voltage	Source Voltage 5V, current limiting resistance 66

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	0.01 % for full load change
Output Settling Time	0.1 sec. ( stable to 99.9 % )
Isolation Breakdown Voltage	1000VAC
Temperature Effect	±0.0025 % 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 Functions	Dwell timer, Deviation High / Low Alarm, Deviation Band High / Low Alarm Process High / Low Alarm
Alarm 1 Relay	Form A,Max. rating 2A/240VAC, life cycles 200,000 for resistive load.
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	50 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 ~ 500.0 °C , Integral time 0 – 1000 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
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 )
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
Altitude	2000m maximum

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

C-21-(1)-(2)-(3)-(4)-(5)-(6)

1 Power Input	4: 90 - 250 VAC, 47-63 HZ
1 Power Input	5: 11 - 26 VAC or VDC, SELV, Limited Energy
2 Signal Input	1: Standard Input
	Thermocouple: J, K, T, E, B, R, S, N, L
	RTD: PT100 DIN, PT100 JIS
	2: 0 - 60 mV
	3: 0 - 1 V
	4: 0 - 5 V
	5: 1 - 5 V
	6: 4 - 20 mA
	7: 0 - 20 mA
	8: 0 - 10V
	9: Special Order
3 Output 1	0: None
	1: Relay rated 2A / 240VAC
	2: Pulsed voltage to drive SSR, 5V / 30mA
	3: Isolated 4 - 20mA / 0 - 20mA
	4: Isolated 1 - 5V / 0 - 5V
	5: Isolated 0 - 10V
	6: Triac output 1A / 240VAC,SSR
	C: Pulsed voltage to drive SSR, 14V/40mA
	9: Special order
4 Output 2	0: None
	1: Form A relay 2A / 240VAC
	2: Pulsed voltage to drive SSR, 5V / 30mA
	3: Isolated 4 - 20mA / 0 - 20mA
	4: Isolated 1 - 5V / 0 - 5V
	5: Isolated 0 - 10V
	6: Triac output, 1A / 240VAC, SSR
	7: Isolated 20V / 25mA transducer power supply
	8: Isolated 12V / 40mA transducer power supply
	9: Isolated 5V / 80mA transducer power supply
	A: RS-485 interface (for C91)
	C: Pulsed voltage to drive SSR, 14V/40mA
	D: Retransmit 4-20mA / 0-20mA (for C91)
	E: Retransmit 1-5V / 0-5V (for C91)
	F: Retransmit 0-10V (for C91)
	B: Special order
5 Communications	0: None
	1: RS-485 interface
	2: RS-232 interface(for C21)
	3: Retransmit 4 - 20 mA / 0 - 20 mA(for C21)
	4: Retransmit 1 - 5V / 0 - 5V(for C21)
	5: Retransmit 0 - 10V(for C21)
	9: Special order
6 Display Color	0: Red color
6 Display Color	1: Green color

Brainchild Low Cost Digital Controllers - Brochure 318.61 KB
Brainchild C21 Digital Controller - User Manual 981.95 KB

Product Range

Product Range:
Code	Specifications	Price
BTC-C21-411101	Digital Controller, 48 x 24mm, Standard input, Relay/Alarm, 90~250Vac	$289.00
BTC-C21-412101	Digital Controller, 48 x 24mm, Standard input, SSR/Alarm, 90~250Vac	$289.00
BTC-C21-413101	Digital Controller, 48 x 24mm, Standard input, 4~20mA/Alarm, 90~250Vac	$289.00
BTC-C21-511101	Digital Controller, 48 x 24mm, Standard input, Relay/Alarm, 11~26Vac/dc	$289.00

All prices are in NZ$, and GST exclusive and are subject to change without notice.

Intech Instruments Ltd are New Zealand distributors for Brainchild products. Please contact the Brainchild distributor in your country if you require sales or service support for Brainchild products.

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C21 Features

Brand: BRAINCHILD
Usually in stock

Product Range

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C21 – 50x26mm Electronic Temperature Controller

C21 Features

Brand: BRAINCHILD Usually in stock

Product Range

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Who we are

Intech Christchurch

Intech Auckland

Newsletter

Brand: BRAINCHILD
Usually in stock