Dry-Running Protection; Electrical Connection - salmson Smart Control SC-L Einbau- Und Betriebsanleitung

English
Outdoor installation
The standard mounting pedestal with cable inlet must be buried
as far as the marking or recessed in a concrete base. The switch-
gear is then fixed to this pedestal.
1. Position the pedestal at the desired mounting location.
2. Insert the pedestal into the ground as far as the marking.
We recommend fixing the pedestal using a concrete base
as this guarantees the greatest possible stability.
Ensure the pedestal is plumb-vertical.
3. Secure the switchgear on the pedestal using the enclosed
fixation material.
5.3.3. Positioning of signal transmitters
For automatic control of the connected pumps, a corresponding
level control device must be installed. This needs to be provided
by the customer.
Float switches or level sensors may be used as signal transmitters.
The corresponding signal transmitters must be installed according
to the unit's installation plan.
DANGER of explosions!
If the connected signal transmitters are used in
potentially explosive areas, the Ex-version of the
switchgear (SC-L...-Ex) must be used. Use of the
standard switchgear can lead to fatal injury due to
explosions! Connection must always be carried out
by a qualified electrician.
Note the following:
• When using float switches, ensure that these can move
unobstructed in the collector tank (sump, reservoir).
• The water level of the connected pumps must not fall
below the minimum.
• The maximum switching frequency for the connected
pumps must not be exceeded.

5.3.4. Dry-running protection

Dry-running protection can be provided via a separate float switch
or via the level sensor.
When using the level sensor, the switching point must be set via
the menu.
Forced deactivation of pumps only occurs if
dry‑running protection is realised via a float switch
however.
5.3.5. High water alarm
The high water alarm can be via a separate float switch or via the
level sensor.
When using the level sensor, the switching point must be set via
the menu.
Forced activation of pumps only occurs if the high
water alarm is realised via a float switch however.
5.4.

Electrical connection

POTENTIALLY fatal danger due to electrical voltage
Incorrect electrical connections can cause fatal
electric shocks. Electrical connections may only
be carried out by a qualified electrician approved
by the local energy supply company, in accordance
with locally applicable regulations.
DANGER of explosions!
If the connected pumps and signal transmitter are
used in potentially explosive areas, the Ex-version
of the switchgear (SC-L...-Ex) must be used. Use of
the standard switchgear can lead to fatal injury due
to explosions! Connection must always be carried
out by a qualified electrician.
NOTE
• Depending on the system's impedance and the
connected consumers' max. no. of connections/hour,
voltage fluctuations or voltage drops may occur.
Always have the electrical connections carried out by
an electrician authorised by the local energy supply
company.
• When using shielded cables, the shielding must
be attached to the earthing rod on one side of the
switchgear!
• Observe the installation and operating instructions for
the connected pumps and signal transmitters.
• The mains connection current and voltage must be as
stated on the rating plate.
• Fuse protection on the mains side must be in accordance
with the data in the wiring diagram. All-pole disconnect-
ing, K-type circuit breakers must be installed!
• A residual-current-operated protection switch (RCD, type
A, sinusoidal current) must be installed in the supply line.
Observe the local laws and regulations on this too!
• Route the power supply cable in accordance with the
valid norms and regulations and according to the wiring
diagram.
• Ground the system (switchgear and all electric consumers)
in accordance with the regulations.
Fig. 2.: Overview of individual components
A Switchgear for direct starting
B Switchgear for star-delta activation
1 Switchgear main switch
2 Main printed circuit board
3 Terminal strip
4 Earthing rod
5.4.1. Switchgear mains connection
Insert the cable ends of the power supply cable laid onsite through
the threaded cable connections and secure them accordingly.
Connect the wires to the terminal strip according to the wiring
diagram.
The protective earth conductor (PE) is connected to the ground
rod.
• Mains connection 1~230 V:
• Cable: 3-core
• Wire: L, N, PE
• Mains connection 3~400 V:
• Cable: 4-core
39
5 Fuse protection of pumps
Contactor combination
6
including motor protection
HAND-0-AUTO- switch for
7
each pump