Manufacturers
KOYO D4-450
Description
KOYO D4-450 CPU MODULE AC P/S 31.5K MEMORY 232 & 232/422 PORT
Part Number
D4-450
Price
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Manufacturer
KOYO
Lead Time
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Category
TBD
Specifications
Anti-windup
If the position form of the PID equation is specified, the reset action is stopped when the PID output reaches 0 or 100%. Select adjusted bias or freeze
Auto Tuning
Open loop step response method and closed loop limit cycle method.
Bumpless Transfer I
Bias and setpoint are initialized automatically when the loop is switched from manual to automatic. This provides for a bumpless transfer, which
Bumpless Transfer II
Bias is set equal to the Output when the module is switched from manual to automatic. This allows switching in and out of automatic mode without
CPU V-memory Required
32 V-memory locations per loop selected (An additional 32 V-memory locations per loop required if using Ramp/Soak)
Error Deadband
Specify an incremental value above and below the setpoint in which no change in output is made.
Error Squared
Squaring the error minimizes the effect a small error has on the Loop output, however, both Error Squared and Error Deadband control may be enabled
Gain
Specify proportional gain of 0.01 to 99.99.
Limit OUT
Specify a maximum and minimum value for the output range.
Limit SP
Specify a maximum and minimum value for allowable setpoint changes.
Loop Operation Modes
Loop can be in automatic control, manual (operator) control, or cascade control. PV alarm monitoring continues when loops are in manual mode.
Number of Loops
Selectable, 16 maximum
PID Algorithm
Position or velocity form of the PID equation. Optionally specify direct or reverse acting, square root of the error and error squared control.
Ramp/Soak
Up to 16 steps (8 ramp, 8 soak) per loop, with indication of Ramp/Soak step.
Rate
Specify the derivative time, 0.00 to 99.99 seconds.
Rate Limiting
Specify a derivative gain limiting coefficient to filter the PV used in calculating the derivative term (0 to 20).
Reset
Specify integral time of 0.1 to 99.98 in units of seconds or minutes.
Sample Rate
Specify the time interval between PV samples, 0.05 to 99.99 in units of seconds or minutes. If using all 16 loops, the smallestsample rate is limited to either 0.2 seconds or (PLC scan time x number of loops).
Square Root PV
Specify a square root of the PV for a flow control application.
Step Bias
Provides proportional bias adjustment for large setpoint changes. This may stabilize the loop faster and reduce the chance of the output going out of
Frequently asked questions
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Why buy from GID?
Quality
We are industry veterans who take pride in our work
Protection
Avoid the dangers of risky trading in the gray market
Access
Our network of suppliers is ready and at your disposal
Savings
Maintain legacy systems to prevent costly downtime
Speed
Time is of the essence, and we are respectful of yours
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