Burkert 8619 Operating Instructions Manual page 102

To create the OFF-delay timer, do the following steps:
1. Do the settings for function F1:
- TYPE: Choose MATH
- EQUATION: Enter !A(B+0.1)
- UNIT
UNIT GROUP: Choose CUSTOM
TEXT then UNIT LIST and choose the unit "s" or TEXT then MANUAL ENTRY and enter s (for
second).
FORMAT: Choose 0.0
- PROCESS A
PV A: Choose the event that will trigger a pulse; either a digital input (DIx in M0:MAIN or in
Mx:Inputs), the event WARNING (in M0:MAIN) or the event SYSSWITCH (in M0:MAIN).
If you want to trigger a digital output with a given delay when a process variable exceeds a given
threshold value, replace A in the equation by (A>"threshold value") and assign the process variable
to PV A.
- PROCESS B
PV B: Choose M0:MAIN and F1:MATH. If F1:MATH is not displayed in the list of process variables
for M0:MAIN, press BACK then SAVE. Go again to PV B and choose M0:MAIN and F1:MATH
- STATE: Make sure the state is set to ON.
- Press SAVE.
2. Do the settings for function F2:
- TYPE: Choose MATH
- EQUATION: Enter A+(B<"value of the delay in seconds"); the value of the time delay must have a
maximum resolution of 0.1 s.
- UNIT
UNIT GROUP: Choose ON/OFF
- PROCESS A
PV A: Choose the same event as the one set in PV A of F1:MATH
- PROCESS B
PV B: Choose M0:MAIN and F1:MATH
- STATE: Make sure the state is set to ON.
- Press SAVE.
3. Do the settings for the digital output (DOx) (also refer to section 9.26.1):
- MODE: Choose ON/OFF.
- PV: Choose M0:MAIN and F2:MATH
- Press SAVE.
102
English
Type 8619
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