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C72


Description
The new generation low cost PID microprocessor-based with Fuzzy logic controller series incorporate two bright easy to read LCD Displays which indicates Process value (PV) and Set point value (SP). The Fuzzy Logic technology incorporated on this series controllers enables a process to reach the predetermined set point in the shortest time with minimum of overshoot during Start up (Power ON) or external load disturbances.

Features
  • High quality LCD Display
  • High Accuracy 18 Bit A-D Input and 15 Bit D-A Output
  • The Fast Sampling Rate in 200msec
  • True Universal Inputs of Thermocouple, RTD, mA, V
  • Fuzzy+ PID Control
  • Auto-Tuning
  • Possibility of both RS-485 and Analog Retransmission
  • 2 Programs each with 8 Segments of Ramp & Soak
  • CT Inputs for Heater-Break Detection
  • Upto 6 Event Inputs
  • Remote Setpoint
  • Bumpless Transfer
  • Lockout Protection
  • Bidirectional Menu Navigation

Specification
Power 
Power Supply90 to 250 VAC, 47–63 Hz ; 11 to 40 VDC / 20 to 28 VAC, 47– 63 Hz
Power Consumption12VA, 6W maximum

Signal Input
TypeThermocouple(J,K,T,E,B,R,S,N,L,U,P,C,D), RTD(PT100(DIN), PT100(JIS)), Current(mA),Voltage(Volts)
Resolution18 Bits
Sampling Rate5 Times / Second (200msec)
Maximum Rating-2VDC minimum, 12VDC maximum
Input Characteristics
Type Range Accuracy @ 25°C Input Impedance
J -120°C  to 1000°C( -184°F to 1,832°F) ±2°C 2.2 MΩ
K -200°C to 1370°C (-328°F to 2498°F) ±2°C 2.2 MΩ
T -250°C to 400°C ( -418°F to  752°F ) ±2°C 2.2 MΩ
E -100°C to 900°C( -148°F to 1652°F ) ±2°C 2.2 MΩ
B 0°C to 1820°C( 32°F to  3308°F ) ±2°C( 200°C to 1800°C ) 2.2 MΩ
R 0°C to 1767.8°C( 32°F to 3214°F ) ±2°C 2.2 MΩ
S 0°C to 1767.8°C( 32°F to 3214°F ) ±2°C 2.2 MΩ
N -250°C to 1300°C( -418°F to 2372°F) ±2°C 2.2 MΩ
L -200°C to 900°C( -328°F to 1652°F ) ±2°C 2.2 MΩ
U -200°C to 600°C (-328°F to 1112°F) ±2°C 2.2 MΩ
P 0°C to 1395°C( 32°F to 2543°F ) ±2°C 2.2 MΩ
C 0°C to 2300°C( 32°F to 4172°F ) ±2°C 2.2 MΩ
D 0°C to 2300°C( 32°F to 4172°F ) ±2°C 2.2 MΩ
PT100(DIN) -200°C to 850°C( -328°F to 1562°F ) ±0.4°C 1.3KΩ
PT100(JIS) -200°C to 600°C( -328°F to 1112°F ) ±0.4°C 1.3KΩ
mA -3mA  to 27mA ±0.05% 2.5Ω
V -1.3V  to 11.5V ±0.05% 1.5MΩ
Temperature Effect1.5µV /°C for all inputs except mA input, 3.0µV /°C for mA
Sensor Lead Resistance EffectThermocouple: 0.2 µV /Ω; 3-wire RTD: 2.6°C /Ω of Difference of Resistance of two leads 2-wire RTD: 2.6°C /Ω of Sum of Resistance of two leads
Burn-out Current200nA
Common Mode Rejection Ratio(CMRR) 120 dB
Normal Mode Rejection Ratio (NMRR) 55dB
Sensor Break Detection Sensor open for Thermocouple and RTD inputs, sensor short for RTD  input , below 1mA for 4-20mA input, below 0.25V for 1 - 5V input, not available for other inputs
Sensor Break Responding Time Within 4 seconds for Thermocouple and RTD inputs, 0.1 second for 4-20mA and 1 - 5V inputs

Remote Set Point Input
TypeLinear Current,Linear Voltage
Range-3mA to 27mA,  -1.3V  to 11.5V
Accuracy±0.05 %
Remote Set Point  OptionAvailable
Input ImpedanceCurrent: 2.5Ω, Voltage:1.5MΩ
Resolution18 Bits
Sampling Rate 1.66 Times/Second
Maximum Rating 280mA maximum for Current Input, 12VDC maximum for Voltage Input
Temperature Effect ±1.5µV/°C for Voltage Input , ±3.0µV/°C for Current Input
Sensor Break Detection Below 1mA for 4-20mA input, below 0.25V for 1 - 5V input, not available for other inputs
Sensor Break Responding Time 0.1 Seconds

Event Input
No. of Event Inputs 2
Logic Low-10V minimum, 0.8V maximum.
Logic High 2V minimum, 10V maximum
Functions See availability table in user manual

CT Input
CT TypeCT98-1
Accuracy ±2%of Full Scale Reading, ±0.2A
Input Impedance 294Ω
Measurement Range 0 to 50A AC
Output of CT 0 to 5V DC
CT Mounting Wall (Screw) Mount
Sampling Rate 1 Time/Second

Output 1 /Output 2
TypeRelay,Pulsed Voltage,Linear Voltage and Linear Current
Relay Rating2A,240V AC,200000 Life Cycles for Resistive Load
Pulsed VoltageSource Voltage 5V,Current Limiting Resistance 66Ω
Linear Output Resolution15 Bits
Linear Output Regulation0.02% for full load change
Linear Output Settling Time 0.1 Second ( Stable to 99.9%)
Isolation Breakdown Voltage 1000 V AC
Temperature Effect ±0.01% of  Span/ °C
Load Capacity of Linear Output Linear Current: 500Ω maximum, Linear Voltage: 10KΩ  minimum

Alarm
Relay TypeForm A
Maximum Rating2A,240V AC,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 Timer0.1 to 4553.6 Minutes

Data Communication
InterfaceRS-485
ProtocolModbus RTU (Slave Mode)
Address1 to 247
Baudrate2.8KBPS to 38.4KBPS
Parity Bit None, Even or Odd
Stop Bit 1 or 2 Bits
Data  Length 7 or 8 Bits
Communication Buffer 160 Bytes

Analog Retransmission
Output Signal4-20 mA, 0-20 mA,0 - 10V
Resolution15 Bits
Accuracy±0.05% of Span ± 0.0025% / °C
Load Resistance0 to 500Ω for Current Output , 10KΩ minimum for Voltage Output
Output Regulation0.01% for full load change
Output Setting Time 0.1 Second (Stable to 99.9%)
Isolation Breakdown 1000VAC minimum
Integral Linearity Error ±0.005% of Span
Temperature Effect ±0.0025% of Span /°C
Saturation Low 0mA or 0V
Saturation High 22.2mA or 5.55V,11.1V min
Linear Output Ranges 0 - 22.2mA (0 - 20mA/4 - 20mA), 0 - 5.55V (0 - 5V, 1 - 5V),0 - 11.1V (0 - 10V)

User Interface
Keypad4 Keys
Display Type4 Digit LCD Display
No. of Display 3
Upper Display Size 0.58”(15mm)
Lower Display Size 0.32”(8.3mm)

Programming Port
InterfaceMicro USB
PC Communication FunctionAutomatic Setup, Calibration and Firmware Upgrade

Control Mode
Output 1Reverse (Heating) or Direct (Cooling) Action
Output 2PID 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 to 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
FunctionFirst Order
Time Constant0,0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 Seconds Programmable

Profiler
AvailabiityOption
No of Segments/Program 4 / 8 / 16

Environmental and Physical Specifications
Operating Temperature-10°C to 50°C
Storage Temperature-40°C to 60°C
Humidity 0 to 90 % RH (Non-Condensing)
Altitude 2000 Meters maximum
Pollution Degree II
Insulation Resistance 20MΩ minimum(@500V DC)
Dielectric Strength 2000V AC,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) 72*72*59
Depth Behind Panel (mm) 50
Cut Out Dimensions (mm) 68*68
Weight (grams) 190

Approval Standards
SafetyUL61010C-1, CSA C22.2 No.24-93, EN61010-1 ( IEC1010-1 )
Protective ClassIP66 for Panel, IP20 for terminals and housing, all indoor use
EMC EN61326

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