ControllersIndicators Digital Indicating Controllers DB500 Series Digital Indicating Controllers     The DB500 series is high-accuracy, high-speed compact controllers with digital displays and an indicating accuracy of ± 0.2% and sampling frequency of about 0.2 second, incorporating high-performance microprocessors with a front panel 48 mm width and 96 mm height. They have excellent functions including an auto-tuning PID function and overshoot suppression function using fuzzy logic. A communications interface is available.   Features Accurate control with ease of operation The operation keys required for setting a set value, PID constants, alarms, etc. are simply arranged for accurate control with easy operation. Auto-tuning PID function The optimum PID constants can be set automatically, eliminating troublesome setting operations and allowing setup in a short period of time. Overshoot suppression with Fuzzy Logic Overshoot which tends to occur due to sudden changes such as a change of the object to be controlled or the change of a set value in a heat treating furnace, etc. can be suppressed by fuzzy logic. Communications interface As a communications interface and transmission signal output are available as options, control using a host computer or combination with a recorder can be performed easily. Zone division control Using the communications interface, a number of this controllers can be connected to control up to 32 zones, allowing tunnel kiln control, etc. Also, combination with a KP Series Digital Program Setter enables program control of a multi-zone batch furnace. Indicating accuracy of ± 0.2% and sampling cycle of about 0.2 second Even though its front panel is small (48 x 96mm), high accuracy and high speed are achieved through use of a high-performance microprocessor and A/D converter. Models Models Control systems DB510-000 On-off pulse type PID DB530-000 Current output type PID DB550-000 SSR drive pulse type PID Measuring ranges Input signals Measuring ranges Thermocouples R 0 to 1760°C S 0 to 1760°C B 0 to 1820°C K -200 to 1370°C, -200 to 300°C E -200 to 700°C J -200 to 900°C T -200 to 400°C N 0 to 1300°C U -200 to 400°C L -200 to 900°C DC voltage -10 to 10mV, -5 to 5V DC current -20 to 20mA Resistance thermometers Pt100 -200 to 649°C, -200 to 150°C JPt100 -200 to 649°C, -200 to 150°C Pt50 -200 to 649°C General specifications Input signals Thermocouples B, R, S, K, E, J, T, N, U, L DC voltage ±10mV, ±5V DC current ±20mA Resistance thermometers Pt100, JPt100, Pt50 Accuracy rating ±0.2% of input span ± 1 digit (For thermocouple inputs, reference junction temperature compensation accuracy is not included.) Reference temperature compensation accuracy ±0.8°C Sampling period About 0.2 second Burnout Upscale burnout for thermocouple, mV and resistance thermometer inputs At burnout Control output 0% and high alarm activation Scaling 1999 to 9999 Decimal point of scale 0 to 3 Displays 4-digit 2-stage display by 7-segment LED 5 status displays by individual LED Power Supply 85 to 264VAC, 50/60Hz (universal power supply) Ambient temperature -10 to 50°C Ambient humidity -20 to 90%RH (no dew condensation) Power consumption Maximum 8VA Weight About 400g Control switching cycle About 0.2 second Control system Current output type PID, On-off pulse type PID, SSR drive pulse type PID (2-position control is possible by internal switches.) Auto tuning Provided. PID constants can also be set manually. PID constants P: 0.1 to 999.9% I: 0 to 9999 seconds (0 for without reset action) D: 0 to 9999 seconds Fuzzy function Overshoot suppression by fuzzy calculation, ON/OFF setting possible (with fuzzy) Current output type PID Output signal 4 to 20mADC Load resistance Less than 500 On-off pulse type PID Output signal On-off pulse conductive signal Contact capacity Resistive load: 100VAC less than 2A, 200VAC less than 1A Inductive load: 100VAC less than 1A, 200VAC less than 0.5A Minimum load: 5VDC more than 10mA On-off pulse period Variable between about 1 to 100 seconds SSR drive pulse PID Output signal On-Off pulse voltage signal ON: 14VDC ± 20% (maximum 20mA) OFF: Less than 0.6VDC On-off pulse period Variable between about 1 to 100seconds Alarm points 2 points Alarm system High/low alarms and deviation/absolute-value alarms With standby function Alarm outputs Form A relay contact output Contact rating Resistive load: 100VAC less than 1A, 200VAC less than 0.5A Inductive load: 100VAC less than 1A, 200VAC less than 0.5A Minimum load: More than 5VDC 10mA Communications interface RS-422A (option) Page Top BACK