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.
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.
Model
Control systems
DB510-000
On-off pulse type PID
DB530-000
Current output type PID
DB550-000
SSR drive pulse type PID
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
-270 to 700°C
J
-200 to 900°C
T
-270 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
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.)
Control set value
Up to 8 (4-digit) values can be set.
Set value change ratio
Setting of slope when the control set point is changed. Ratio 0000 to 9999/minute (0 for step response)
Control setting accuracy rating
±I digit (relative error to indicating value)
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 550Ω
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: more than 5VDC 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 180 seconds
Alarm points
2 points
Alarm system
High/low alarms and deviation/absolute-value alarms
With standby function
Alarm output
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
