Chapter 7. Usage of Various Functions
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(2) In case of using PID function only
a) PID operation explanation (without A/T function)
• Measure current temperature (-200~600°C) by RTD module then digital conversion value(0 ~ 4000).
• PID8 instruction will calculate manipulate value (MV: 0 ~ 4000) based on PID parameter settings (P_GAIN,
I_TIME, D_TIME, etc.) and PV from RTD module. Then, the calculated MV is output to the channel 0 of D/A
module.
• D/A module will convert the MV to analog signal and output to the actuator (power converter).
b) Parameter settings
• Scan Time: 0.5 s (input ‘5’)
• Operation Mode: 0 (operation mode is set to ‘Auto’)
• Output Limit Value: Max: 4000, Min: 0
When PWM is designated, this window is activated
and enables to input PMW contact
Value:
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