Calpeda QML/A 1 D 12A-FA Manuel D'instructions page 21

2 float switches connections plus one float switch
for alarm
(drawing 4.70.1405.2 paragraph 15)
The float switches must be connected to
terminals 1-2 and 3-4, if the pump is controlled
by two float switches.
The upper level float switch and the alarms (optional)
must be connected to terminals 5-6 .
2 pumps
2 float switches connections plus one float switch
for alarm
(drawing 4.70.1400.1 paragraph 15)
The float switches must be connected to
terminals 3-4 and 5-6, if the pumps are
controlled by two ON-OFF float switches. The
upper level float switch and the alarms
(optional) must be connected to terminals 7-8 .
3 float switches connections plus one float switch
for alarm
(drawing 4.70.1400.2 paragraph 15)
The float switches must be connected to
terminals 1-2, 3-4 and 5-6, if the pumps are
controlled by
The upper level float switch and the alarms
(optional) must be connected to terminals 7-8.
3 pumps
3 float switches connections plus one float switch
for alarm
(drawing 4.70.1407.1 paragraph 15)
The float switches must be connected to
terminals 3-4, 5-6 and 7-8, if the pumps are
controlled by three ON-OFF float switches.
The upper level float switch and the alarms
(optional) must be connected to terminals 9-10.
4 float switches connections plus one float switch
for alarm
(drawing 4.70.1407.2 paragraph 15)
The float switches must be connected to
terminals 1-2, 3-4, 5-6 and 7-8, if the pumps
are controlled by four float switches.
The upper level float switch and the alarms (optional)
must be connected to terminals 9-10 .
6.5.4. Float switch connection for dry-running
protection
(pressure mode)
It's possible to use a float switch GMIN for dry-running
protection (drawings
4.7.1408.2 chapter 15).
6.5.5. Pressure switches connection
(pressure mode)
The pressure switch must have normally open
i
contact (the pressure switch should be in the
stable condition, with zero pressure, broke
signal).
6.5.6. Level probe connection
(drainage mode)
It's possible to use level probes instead of float
switches (paragraph 15).
6.5.7. Level probe connection
(pressure mode)
Level sensors are used when it is not possible to install
flow switch (for example: to protect a submersible
M004_REV06_ - Operating Instructions
three float switches.
4.70.1046.2, 4.70.1401.2,
pump in a deep well against dry running).
The maximum distance from level probes and
control panel is 500m and the maximum water
resistance is 30 kΩ.
Connection of 2 level probes
Insert the level probe SLMIN in the deep well and
connect it to terminal 3.
Insert the level probe SLMAX in the deep well and
connect it to terminal 1.
Connect terminal 4 to the pump ground lead.
If the suction lift pipe is made of insulating
material, insert another level probe (SLCOM)
in the deep well and connect it to the terminal
4 (scheme 3 draw 4.70.1406, 4.70.1401,
4.70.1408).
Connection of timed level probe
Insert the level probe SLMIN in the deep well and
connect it to terminal 3.
Connect terminal 4 to the pump ground lead.
If the suction lift pipe is insulating material,
insert another level probe (SLCOM) in the deep
well and connect it to the terminal 4 (scheme 3
draw 4.70.1406, 4.70.1401, 4.70.1408).
6.5.8. Connection of the transducer
The pressure transducer is an analogical instrument with
an output signal of 4-20 mA that continuously reads:
• the liquid level in the tank for drainage mode.
• the pressure in a system for pressure mode.
The pressure transducer should be connected to
terminals 15-16.
6.5.9. Thermal protector connections
(drainage mode)
The thermal contact breakers in the windings of the
motors are predisposed for external connection
(paragraph 15).
6.5.10. Fuses replacement
The standard control panel is equipped with 25A aM
(Ø6,3 x 32) fuses for single-phase pumps and 16A aM
(Ø10,3 x 38) fuses for three-phase pumps.
When the nominal current of the pump is less
i
than 5.6A, replace the standard fuses with 12A
aM (Ø6,3 x 32) fuses for single-phase pumps
and 8A aM (Ø10,3 x 38) fuses for three-phase
pumps provided in the control panel.
Remove the protective cover, replace fuses and
reinstall the cover itself.
6.5.11. Remote alarm connection
Connect to the terminals:
-1 pump:14-15 (NC) or 15-16 (NO)
-2 pump: 18-19 (NC) or 19-20 (NO)
-3 pump: 23-24 (NC) or 24-25 (NO)
a possible remote alarm or the control panel for
remote alarm RA100 (see chapter 15.1).
ATTENZIONE: Operating limits: 120 Vac o 24 Vdc, 1 A
maximum resistive current.
6.5.12. Flow-switch Connection
It's possible to use a flow-switch instead of the G
MIN float switch (drawings 4.70.1046.2, 4.70.1401.2,
4.7.1408.2 chapter 15). The flow-switch should have
normally open contacts (Flow-switch deactivated,
with zero flow, disconnected signal).
GB
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