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DIGITAL INDUSTRIAL CONTROLLER
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6.3 Process operation
In the process operation level, the 6 operator controls have the meanings shown in
Figure 23.
Meaning
Operator control
MANUAL/AUTO key
Switching over the MANUAL and AUTOMATIC modes.
The AUTOMATIC mode is indicated by an LED in the operator
control.
Switch-over to the next process variable
SP: Set-point
PV: Actual value of controlled variable PV1 (or of the Ratio)
CO: Manipulated variable
(Ch and Cc for 3-point PWM signals)
F: Flow rate (actual value of the Input PV1 for ratio control)
DISPLAY key
SELECT key
• Switching over to the parameter definition level by pressing
the key for more than 5 seconds
ENTER key
„Down arrow“ key
„Up arrow“ key
• Switching over to the configuration mode by simultaneously
pressing this key and the SELECT key for more than 5 seconds
• Confirm set value
• Digit selection when setting numeric values
• Reducing the value of the manipulated variable (in MANUAL
mode), i.e. reducing the voltage or current (in the case of
standard signals) or the pulse width in the case of PWM signals
• Relay 2 on (motor „Reverse“) in the case of 3-step signals
without external feedback
• Modifying a numeric value
• Increasing the value of the manipulated variable (in MANUAL
mode), i.e. increasing the voltage or current (in the case of
standard signals) or the pulse width in the case of PWM
signals
• Relay 1 on (motor „Forwards“) in the case of 3-point step
signals without external feedback
Figure 23: Meanings of operator controls in the process operation level
➤
➤
DISPLAY
ENTER
0.....9
SELECT
0.....9
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