High Temperature Ramp Soak PID Controller – PRC-309
Product Description :
PRC-309Ramp/Soak Programmable PID Temperature Controller – 1 to 10 profiles – each of 16 steps.
Technical Specification
| Parameters | Description |
|---|---|
| Design | Microcontroller based with 12 bit ADC and dual 12 bit DAC |
| Input | Thermocouple type K, R, S, B, (user selectable) or RTD (Pt-100) |
| Range | Subject to the full range of the specified input. |
| Resolution | 1°C Subject to the specified input type and range. |
| Indicating Accuracy | Better than ± 0.1% of the range ( by software linearization of curves) |
| Display | 4 digit 0.5” for process value. |
| 4 digit 0.3” for set value and other parameters. | |
| 2 digit 0.3” for Program number and other codes. | |
| Tuning | Manual tuning of PID values. |
| Control Algorithm | PID mode for heating control, |
| On/Off mode with programmable hysteresis. | |
| PID values | Proportional Band (P)= 0.0 to 100.0% of Span, Integral value (I)= 0.00 to 5.00 resets/minute, Derivative value (D) = 0.00 to 5.00 minutes Cycle Time (CYC)= 2 to 100 seconds, On/Off Hysteresis (HYSt)= 0 to 50°C, |
| Soft Start (rt) and Power Limit (PL) | Built in power on soft start (rt) for analog output = 1 to 99 seconds. Power Limit to restrict the analog control output = 1 to 100 %. E.G. If control output is 0 to 5VDC and PL=80%, then control output range will be restricted to 0 to 4Volt (80% of 5Volt). |
| Power Limit to restrict the analog control output = 1 to 100 %. | |
| Control Outputs | a) DC pulses to drive external SSR, b) (4-20)mA, RL max = 300 Ohms. Or c) (0-5)VDC / (0-10)VDC, RL min = 10K ohms. d) (4-20mA) retransmission output proportional to temperature (Optional) |
| No. of Ramp/Soak Profiles | 1 to 10 profiles each of max. 16 steps. |
| Ramp/Soak Steps | 1 to 16 Steps. (No restrictions in programming – a ramp can be followed by a ramp and a soak can be followed by a soak). |
| Set Temperature | Programmable for each steps in the full range of the specified input. |
| In single set point or profile control mode. | |
| Time per each Ramp/Soak Step | 1 to 540 mins. (9 Hrs. per step) Or 1 minute to 100 hours (Two or more steps can be combined for longer time duration). |
| Run from desired step number (rFSn) | This rFSn facility allows user to skip the ramp/soak steps and run the profile from the desired step number. With servo start facility (to start the step from the current furnace temperature) the rate of heating/cooling can be kept same. |
| Program Hold Facility | Manual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility) dHLd= 0 to 50 oC. (Effective from 2nd step) |
| Manual hold when dHLd=0. |
|
| Front Panel LEDs | To display the status of control output, Alarms and Ramp/Soak status. |
| Memory Backup | Retention of PID and set values in the non-volatile memory in the event of power failure and auto resumption of heating cycle. |
| Alarm Outputs | High or Low or End of Profile Alarm Relays (OUT2 and OUT3) |
| (contacts rated for 5A @ 230VAC). | |
| Serial Communication (Optional Feature) | Optically isolated 2 wire RS485 interface on Modbus RTU protocol (in Slave mode with programmable slave ID) |
| Supply | 90-240VAC ( approx. 5VA), 50/60Hz. |
| Size | 96 x 96 x 120 mm |
| Panel cut out | 92 x 92 mm +/- 0.5 mm |
| Enclosure | ABS plastic enclosure with ABS bazzel and polycarbonate front. |