Basic PID Temperature Controller – PID-903

Basic PID Temperature Controller – PID-903

Product Description:

PID-903– Temperature and Process Controller
Configuration : (1AI + 2DO + 1SO)
Size (mm) : 96 x 96 x 75

Libratherm 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 96 x 96 x 75 mm, accepts input from J, K, thermocouple, Pt-100, 4-20mA, and provides SSR output, 4-20mA output, 1 relay output.

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

AI	Analog Input from Process transmitter in the form of 4-20mA or from the Temperature Sensors.
AO	Analog Output proportional to Analog input, available in the form of Retransmission or PID control output of 4-20mA or optionally 0 -10V
DO	Digital Output in the form of relay contacts or SSR DC logic level
SO	Serial Output in the form of RS-485 on MODBUS RTU interface.

Paramters	Description
Process Input (AI)	4-20mA or 0-10V
Display Range	-2000 to +2000 or 0 to 4000 count with programmable decimal point -1999 to +9999 with programmable decimal point (5 Digit models)
Resolution	0.1,0.01,0.001
Temperature Input(AI)	Thermocouple type – J, K, R, S, B RTD type – (Pt-100)/ 2, 3 or 4 wire sensors
Temperature Range	As shown in the Input and Range Selection table.
Resolution	1 °C for thermocouples and 0.1 °C for Pt-100.
Sampling rate / Display rate	The input is read @40mS / the display is updated @1 second.
Indicating Accuracy	+/- 1 °C for Thermocouple throughout the range and +/- 0.1 °C for Pt-100 for (4-20)mA or (0-10)V - absolute to the linear input signal.
Display	4 digit 0.5" Red 7-segment display for process variable. 4 digit 0.5" Green 7-segment display for set value and PID parameters
Settings	Using Front panel feather touch key board to set various parameters like Set values, Hysterisis values, Span hi/lo values, MODBUS slave ID, Input selection, calibration etc
PID Values	Prop. Band (P) = 0.0 to 100.0% of Span, Integral (I) = 0.00 to 5.00 resets/minute, Derivative (D) = 0.00 to 5.00 miutes, CYC= 2 to 30 secs
Control Action	Analog and Switching PID algorithm (Direct or Reverse action as required)
Control Output	1. SSR drivers 2. 4-20mA/0-5V/0-10V
Alarm Output	1 to 4 no. of Relays for event or High/Low Alarms
Retransmission Output (AO)	4-20mA linearized and proportional to the selected input type and range. RL max = 300 Ohms. 2nd Analog Output Not available if used for Control Output.
Supply	(90VAC-250VAC), 50/60 Hz, 18 to 48VAC/DC (optional)
Size	96 x 96 x 75
Enclosure	ABS plastic with polycarbonate front graphic.

Sr. No.	Specifications	Part No.
1.1	Input : J,K,Pt-100,4-20mA + SSR + 4-20mA Reverse Action control output + 2 Relay output	1505-1
1.2	Input : J,K,Pt-100,4-20mA + SSR Reverse Action control output + 2 Relay output + 4-20mA retransmission	1505-2
1.3	Input : J,K,Pt-100,4-20mA + SSR + 4-20mA Direct Action control output + 2 Relay output	1505-3
1.4	Input : J,K,Pt-100,4-20mA + SSR Direct Action control output + 2 Relay output + 4-20mA retransmission	1505-4

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