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Ramp Soak PID Temperature Controller – PRC-300

Bar Graph Indicator Model BGI-144

Process Control Instruments

Ramp Soak PID Temperature Controller – PRC-300

Product Description :

PRC-300 Ramp / Soak Programmable PID Temperature Controller – Single profile of 16 steps (Basic Model).

Technical Specification

DesignMicrocontroller based with 12 bit ADC and dual 12 bit DAC.
InputThermocouple type K, R, S, B, (user selectable) or RTD (Pt-100)
RangeSubject to the full range of the specified input.
Resolution1°C Subject to the specified input type and range.
Indicating AccuracyBetter than ± 0.1% of the range ( by software linearization of curves)
Display4 digit 0.5” for process value.
4 digit 0.5” for set value and other parameters.
TuningManual tuning of PID values.
Control AlgorithmPID mode for heating control,
On/Off mode with programmable hysteresis.
PID valuesProportional 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) andBuilt in power on soft start (rt) for analog output = 1 to 99 seconds.
Power Limit (PL)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).
Control Outputsa) 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)
Ramp/Soak Steps1 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 TemperatureProgrammable for each steps in the full range of the specified input.
In single set point or profile control mode.
Time per each Ramp/Soak Step1 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 FacilityManual 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 LEDsTo display the status of control output, Alarms and Ramp/Soak status
Memory BackupRetention of PID and set values in the non-volatile memory in the event of power failure and auto resumption of heating cycle.
Alarm OutputsHigh or Low or End of Profile Alarm Relays (OUT2 and OUT3)
(contacts rated for 5A @ 230VAC).
Supply90-240VAC ( approx. 5VA), 50/60Hz.
Size96 x 96 x 120 mm
Panel cut out92 x 92 mm +/- 0.5 mm
EnclosureABS plastic enclosure with ABS bazzel and polycarbonate front.