BRAINCHILD ELECTRONIC CO.,LTD.
Brainchild is the largest controller maker in Taiwan, and the only maker of paperless recorder in Taiwan. With good quality and competitive prices, our paperless recorders have been sold over 70 countries in the world. A strong and experienced R&D team allows us to offer customers innovative and state-of-art paperless recorders all the years, including high performance paperless recorder, 18 channel paperless recorder, and paperless chart recorder. It is our philosophy in pursuit of perfection through continuous improvement.
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C21

Categories  > Controllers > Low-cost PID controllers

Product Name:
50 x 26 mm low cost controller
Description:
The series of single loop controllers with a single LED display are used for non-sophisticated system, state-of-art design, sufficient features, easy for operation and low-cost.
Features:
‧ 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

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Specification:
Power
90 - 250 VAC, 47 - 63 Hz, 10VA, 5W maximum
11 - 26 VAC / VDC, SELV, Limited Energy, 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 : ±1.5 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.

Characteristics :

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 ~ 3272 °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
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 : 1000 VAC
   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 : 1.5 V rms
   Insulation Resistance : 1000 Mohms min. at 500 VDC
   Dielectric Strength : 2500 VAC for 1 minute

Alarm( Output 2 )
Alarm 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 : 2.4 ~ 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 - 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 ~ 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 to 50°C
Storage Temperature : -40°C to 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
Other Description:

C21 - □□□□□□
             1      2      3      4      5      6      

1     Power Input
               4: 90 - 250 VAC, 47-63 HZ
               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
               1: Green color

 

 

This is the details for C21, 50 x 26 mm low cost controller. The information includes model, name, description and specification for C21, 50 x 26 mm low cost controller. Related Keywords : low cost controller
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Address :  6F, No.209, Chongyang Rd., Nangang District, Taipei, 115,Taiwan (R.O.C.)
Telephone :  886-2-27861299  Fax :  886-2-27861395  
Sales email : sales@brainchild.com.tw 

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