Setting - Grundfos LC 110 Montage- Und Betriebsanleitung

14.2 Setting

Systems for parallel operation with 3 levels (4 electrodes),
page 264.
The module CU 214 has a 10-pole DIP switch in the bottom right
corner, see fig. 11.
During setting, the controller must be off circuit for at
least 1 minute to ensure the correct configuration
Caution
during start-up after change of the DIP switch setting.
The DIP switch setting offers the following possibilities:
• selection of starting delay and automatic test run (switch 4),
• setting of stop delay (switches 5, 6 and 7),
• selection of automatic alarm resetting (switch 9),
• selection of automatic restarting (switch 10).
Fig. 11
Set the DIP switch as shown in fig. 11.
Each individual switch (1 to 10) of the DIP switch can be set to
position OFF or ON.
The DIP switch must not be set to other switch
Note
combinations than those described in this section.
Set the switches 1 to 10 as follows:
• Switches 1, 2 and 3, application type:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
This setting determines the actual application type
(parallel operation with 3 levels (4 electrodes),
page 264).
• Switch 4, starting delay and automatic test run
(only in the case of battery back-up):
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
At this setting, the start-up is delayed within the range
from 0 to 255 sec. (random) after the electricity supply
has been switched on when the liquid level is
sufficiently high.
Automatic test run carried out every 24 hours.
After the electricity has been switched on, the pump will
start immediately when the liquid level is sufficiently
high.
No automatic test run.
• Switches 5, 6 and 7, stop delay:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
The stop delay is the time from the stop signal is given until the
pump is stopped.
It must be ensured that the pump is not running dry.
0 sec.
15 sec.
30 sec.
45 sec.
• Switch 8:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
Switch 8 has no function in connection with the actual
application (parallel operation with 3 levels
(4 electrodes), page 264), but this setting must be
maintained!
• Switch 9, automatic alarm resetting:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
This setting ensures automatic resetting of alarm
signals to external alarm devices and the built-in
buzzer. However, an alarm signal will only be reset if
the cause of the fault no longer exists.
At this setting, the alarm signal must be reset manually
by means of the reset button (the reset button is
described in section 14.5).
• Switch 10, automatic restarting:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
This setting enables automatic restarting after the motor
thermal switch has cut out the pump. Restarting will not
be carried out until the motor has cooled to normal
temperature.
When the pumps connected are used in explosion
hazard areas, switch 10 must not be in this
position!
At this setting, the pump must be restarted manually after
the motor thermal switch has cut out the pump. To restart
the pump, push the ON-OFF-AUTO selector switch into
position OFF for a short period (the ON-OFF-AUTO
selector switch is described in section 14.5).
When the pumps connected are used in explosion
hazard areas, switch 10 must be in this position!
60 sec.
90 sec.
120 sec.
180 sec.
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