PID Controllers

Description

To accurately control process temperature without extensive operator involvement, a temperature control system relies upon a controller, which accepts a temperature sensor such as a thermocouple or RTD as input. It compares the actual temperature to the desired control temperature, or set point, and provides an output to a control element. The controller is one part of the entire control system, and the whole system should be analyzed in selecting the proper controller. The following items should be considered when selecting a controller:

• Type of input sensor (Thermocouple, RTD) and temperature range
• Type of output required (Electromechanical Relay, SSR, Analog Output)
• Control algorithm needed (On/ Off, Proportional, PID)
• Number and type of outputs (Heat, Cool, Alarm, Limit)

• FEATURES

• Universal Input (T/C/ RTD/ Linear input) & Ranges
• 24 VDC Power Supply for 2-wire Transmitter
• High Accuracy, Micro Processor Based
• Self Diagnosis Function, Input Fail Safe Operation
• Multiple Level Keyboard Locking Function
• Adjustable PV Offset
• Input/ Output Isolated, Soft Start
• PID Auto Tuning (AT) or Fuzzy Control
• Heat / Cool PID Control Output
• 1 Ramp, 1 Dwell (Soak) with Adjustable Time
• Manual/ Auto Switching, Bumpless
• Upto 3 Alarms in 17 Modes
• Remote Set Point
• PV, SV, MV Value Re-Transmission (Isolated) - Functions as Smart Temperature Transmitter with Selectable Input & Ranges.
• Communication (RS485/ RS232) with Windows Software
• Synchronous (Master-Slave) Operation of upto 10 Controllers with One Program Controller
• Program Controller – 2 Pattern × 8 Segment/ 1 Pattern × 16 Segment, Ramp/ Dwell (Soak) time with Segment end/ end + Delay Alarm and Adjustable MV limit/ Segment
• Switching Power Supply : AC 85-264V, 50 Hz
• EMI/ ESD Protection: CE Approved
• NPL Traceable Certificate
• Warranty, Service and Commissioning Engineer Support

• APPLICATIONS