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

The Fuzzy Logic plus PID microprocessor-based controller series, incorporate a bright, easy to read 4-digit LED display, indicating process value or 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. C21 is a 1/32 DIN size panel mount controller.C91 is a 1/16 DIN size panel mount controller. These units are 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,...

Power 90-250 VAC, 47-63 Hz, 10VA, 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: ±1.5 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...

Connection Diagrams 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 - 1000 seconds Derivative time 0 - 360.0 seconds Cycle Time : 0.1 - 90.0...

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 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...

Isolated 1A / 240VAC Triac Output Module ( SSR ) 14V / 40mA SSR Drive Module Isolated 4 - 20 mA/ 0 - 20 mA Analog Output Module Isolated 1 - 5V / 0 - 5V Analog Output Module Isolated 0 - 10V Analog Output Module Isolated RS-485 Interface Module for C21 Isolated RS-232 Interface Module for C21 Isolated 4-20mA / 0-20mA Retrans Module for C21 Isolated 1-5V / 0-5V Retrans Module for C21 Isolated 0 - 10V Retrans Module for C21 Isolated RS-485 Interface Module for C91 Isolated 20V / 25mA DC Output Power Supply Isolated 12V / 40mA DC Output Power Supply Isolated 5V / 80mA DC Output Power Supply RS-232...