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Product Details:

PID-480 – Temperature and Process ControllerConfiguration : (1AI + 1AO + 2DO + 1SO)Size : 48 x 48 x 120

DescriptionLibratherm offers various models of Digital Temperature and Process PID Controllers. The user has the choice of selecting the model based on the type of Input, type of analog or digital interface, and required size. All the models are designed to suit most of the Industrial applications.
This High-Temperature PID Controller is available in the size of 48 x 48 x 120 mm, accepts input from J, K, R, S, B thermocouple, Pt-100, 4-20mA and provides SSR control output, 4-20mA control Output, 2 relay output, and serial output of RS485 MODBUS interface.
Key Features:

• Microcontroller based Design
• Software linearized for better measurement accuracy
• Field proven PID algorithm
• Works on universal 90-240VAC
• Universal and User selectable input from process transmitters/temperature sensors
• 1 to 4 Relay or SSR or 4-20mA/0-5V/0-10V control Output
• Industrial standard Analog and Digital Interface

Configuration

Ordering Information:

Product Details:

Our product SCR Firing and Triggering Cards using Phase Angle Control Technique For Single / Two or Three Phase heater control and DC rectifier. Using synchronized phase angle control technique.Libratherm offers SCR triggering cards model LTC-12, LTC-13 and LTC-15 and LTC-18 , which are designed to fire or trigger back to back connected SCRs using synchronized phase angle control technique. The card accepts analogue control signals of (0-5)/(0-10)VDC or (4-20)mA and provides proportional gate/cathode triggering pulses G1K1 + G2K2. These pulses can be used to trigger back-to-back connected SCRs upto 1000Amps with gate current upto 300mA. The card also provides built in regulated 5VDC supply to connect external potentiometer to manually control the SCR firing. The on card ramp up and ramp down settings allows gradual rise and fall of the voltage levels across the load. Many times it is required to limit the current flowing through the load. Such current limiting feature is available in LTC-13 – for single phase and two phase load. Whereas for 3 phase load, common three phase current limiting is achieved by LTC-18 card. The load current or Line current feedback is derived from the external CTs. This feature is useful for transformer load or inductive loads or for heating elements like Silicone Carbide and Molybdenum Disilicide, which exhibits significant change of resistance with increase in temperature. This feature will restrict the maximum load current to the value set using the on card current limit (CL) potentiometer. On a sudden increase in the current the current trip feature will over-ride the current limit feature and the firing of the thyristor will stop instantly. The trip contacts are available on the terminals.

Features:

• All these cards can be mounted inside the control panel.

• Digital and Linear circuit based.

• Smooth Control On card setting to adjust Ramp Up and Ramp Down.