Configuring A Pvc - Burkert 8619 Operating Instructions Manual

Type 8619
Parameters menu
9.13

Configuring a PVC

A PVC is a process variable (PV) whose value is constant as long as you do not change it manually. You can
change the value in the menu below or in the Process level.
Refer to section 8.10 to access the "Parameters" menu.
Parameters
Functions
This is This is
when the when the
device is be- device is be-
ing parame- ing parame-
tered............ tered............
.................... ....................
1) If "Unit" ≠ "ON/OFF"
2) Only if "Unit" = "Custom"
LOCK:
- ON: the values of the PVCs cannot be modified in the Process level without entering an access code.
To modify the value of a PVC, first enter the access code of the "Parameters" menu. The default access
code is "0000" (see section 9.4).
- OFF: the values of the PVCs can be modified in the Process level without entering an access code.
STATE: Used to activate (choose "ON") or deactivate (choose "OFF") the selected PVC. Only activated
PVCs are displayed in the Process level and in the lists of available PVs. See section 15.
VALUE: If UNIT is set to ON/OFF, then choose whether VALUE is always ON or always OFF. If UNIT is dif-
ferent from ON/OFF, then enter the numeric value of the PVC.
MIN: If UNIT is different from ON/OFF, enter the lower limit of the PVC.
MAX: If UNIT is different from ON/OFF, enter the upper limit of the PVC.
UNIT: Choose a unit for the PVC. The following choices are possible:
• ON/OFF: Choose whether VALUE is always ON or always OFF. The following use cases are possible:
- Control a digital output (DOx). Then, configure the DO output as an ON/OFF output (see section 9.26.1).
- Reset a totaliser. Then, configure the totaliser (see section 9.23.2).
- Freeze a totaliser. Then, configure the totaliser (see section 9.23.3).
- Participate in a boolean equation. Then, configure the equation (see section 9.15.1).
- Trigger the "System switch" event. Then, configure the "System switch" event in mode ON/OFF (see
section 9.21).
• CUSTOM: To enter a customized text for the unit and choose the format of the PVC.
• NO UNIT: To enter a very high range of values.
Constants Lock:
PVC1...PVC12
ON
OFF
State: ON
OFF
Value ENTERING
Min ENTERING
Max ENTERING
Unit
Text Unit list
Manual entry
Format
English
1)
2)
89