Festo MPS PA, Operating Instructions Manual

Page: 61 / 68

Bottling Learning System Maintenance and troubleshooting
© Festo Didactic 696690
61
12.4 Error in the electrical system
The following table shows errors that can be simulated through use of the electrical components or that can
occur due to incorrect operation.
Location Error /
Disturbance variable /
Danger potential What is the effect of the
error, disturbance
variable, or danger? What causes errors? How can I detect and
prevent errors?
Electrical faults
19" frame
back/underside Power supply faulty No electrical function Unplug the IEC power
cable or remove the
micro fuse Observe the light at the
power supply switch or
measure the voltage
I/O terminal No switching function 24 VDC outputs do not
switch, sensors are not
displayed by LEDs Unplug the SysLink cable
from the I/O terminal Visual inspection
Pump PL1 Flow rate too low Flow rate too low,
increased filling time On the motor controller,
exchange ports 1 and 2
of the pump Display of flow rate at
only ~ 2 l / min
Pump PL1 Flow rate too low Flow rate too low,
increased filling time Turn the adjusting screw
on the motor controller
counterclockwise with a
small screwdriver Select the container.
SysLink I/O terminal Signal statuses faulty Switching signals are not
displayed or are
displayed incorrectly Slide switch is in
position NPN instead of
PNP Visual inspection
with data sheet, observe
representation
12.5 Mechanical faults
The following table shows errors that can be influenced mechanically or can occur as a result of incorrect
operation.
Location Error /
Disturbance variable /
Danger potential What is the effect of the
error, disturbance
variable, or danger? What causes errors? How can I detect and
prevent errors?
Mechanical faults
Lower tank VE1 Filling level via
capacitive sensors Incorrect or absent
signal display Turn the sensor or adjust
the mounting bracket
along the profile Visual inspection of I/O
check