Commissioning
66
© Festo Didactic • MPS
®
PA Compact Workstation
Example program for a Siemens controller
Please find on the CD which is enclosed to the documentation a Step 7 program for a
closed loop level control. In following you find a description for starting the
sequence.
13.
Check voltage power supply and compressed air supply.
14.
Choose controlled system and setup hand valves according to commissioning
table (6.6).
15.
Activate RESET sequence. The RESET sequence The reset sequence is prompted
by the illuminated RESET pushbutton and executed when the pushbutton has
been pressed. Normal position of the station is defined if water level in lower
tank is filled and following digital sensors are activated:
Float switch S111 for overflow savety
not activated
Upper limit switch B114
activated
Lower limit switch B113
activated
Float switch S112 for threshold (upper tank)
not activated
16.
Start the sequence of the MPS
®
PA Compact Workstation. The start is prompted
by the illuminated START pushbutton and executed when the push button has
been actuated.
17.
It program is started operation mode “logic control” is running and indicated
with light Q1.
18.
The pump P101 delivers process fluid from the lower storage tank B101 into the
upper reservoir tank B102. As soon as the level rise up to the float switch B112
is activated the PLC is changing operation mode from logic control to close-loop
control. Light Q2 is indicating operation mode close-loop control. Filling level is
monitored with the ultrasonic sensor B102 (actual value) and controlled up to
the setpoint (fixed value at startup of PLC). If the water level has reached the
setpoint and the steady-state of e.g. bottling pressure is reached ball valve
V102 is opened time controlled. After bottling time t the ball valve V102 is
closed and once again the water level controlled to setpoint. After setpoint is
reached again another bottling process is started, etc.
19.
The program is stopped automatically if the water level in the lower storage
tank is lower than the limit switch B113 (deactivated).
By pressing STOP pushbutton the ball valve V102 is closed and the pump P101
switched off. The sequence program is stopped.
5.11
Start sequence
S7 programm “Level”
Содержание MPS PA Compact
Страница 1: ...MPS PA Compact Workstation EN 12 08 Process automation MPS PA Compact Workstation Manual ...
Страница 10: ...Introduction 10 Festo Didactic MPS PA Compact Workstation ...
Страница 14: ...Technical data 14 Festo Didactic MPS PA Compact Workstation ...
Страница 16: ...Transport Unpacking Scope of delivery 16 Festo Didactic MPS PA Compact Workstation ...
Страница 68: ...Commissioning 68 Festo Didactic MPS PA Compact Workstation ...
Страница 70: ...Maintenance 70 Festo Didactic MPS PA Compact Workstation ...