Ramp Soak PID Temperature Controller – PRC-967
Product Description :
PRC-967 Ramp/Soak Programmable PID Temperature Controller (Bigger display) – Single profile of 16 steps.
|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 0.8” for process value.|
|4 digit 0.5” for set value and other parameters.|
|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||Built 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 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)
|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. (16 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 °C.
(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).
|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 bezel and polycarbonate front.|