Burkert Type 4040 - Handbuch (Seite 19)

4040 - 17
english
Process Diagram: Automated Conveyance (1)
Lock OFF, conveying valve CLOSED,
Sealing air CLOSED
Basic function
operations OFF
kv_max value known
QL(p) known
No alarm
Selection of conveying recipe
Main pressure present
Data entry manual or by means
of binary inputs C10, C12:
- START
- STOP
- ALARM RESET
Binary input C11:
- Empty run
Output transmitter signal
from conveying pressure p
on a cyclical basis as
monitor signal to port B6 AND
Start
Sealing air valve open
Start up conveying valve
(target value vE by ramping with
ramp time tvE,
calculation not including leakage)
Time t1 = 15 s
(adjustable 1...100 s)
Lock IN
Q0 = Qeff + QL(p)
Adjust conveying valve
1 4
START:
*C10 (Start/Stop)=1 OR
*C13 (Key-operated switch)=1 AND
SELECT key
Conveying valve opening in % according to
4040 stipulations and setting of
positioner
t1 from recipe;
Settling time after start
Compensation for lock leakage
(Qeff=amount over line length)
Monitor main pressure p1
and PIA02 on a cyclical basis
when conveying has started
p1 < 0.2 bar OR
PIA02 =1
ALARM 5
Adjust conveying valve to
empty- run target value
vL [m/s; target figure by
ramping with ramp time
tvL=30 s;
Calculation including
leakage
C11 (empty run) =1?
j
j
O
PERATION