Wiring Diagrams Of Signals And For Control By Means Of External Pressure Switch; Operation; Indications; Operating Modes - Espa ELV Manual De Instrucciones

WARNING: All external-cabling connections must use terminal tips on the ends of each cable. External
cables must comply with the corresponding electrical safety and insulation regulations. Qualified service
personnel should make installation.
Avoid any cable pieces from falling inside the circuit, which could lead to its destruction.
Risk of electrocution
DANGER.
If the unit has to be uncovered due to any circumstance, first disconnect the power supply.

3.7) Wiring diagrams of signals and for control by means of external pressure switch

4) OPERATION.

4.1) Indications.

Power supply plug-in
Pump operating
Key ON / OFF

4.2) Operating modes.

Automatic mode.
This is the common operating mode.
- In delay, the LED "LINE" is ignited.
- In operation, the LED "ON" is illuminated.
Single-phase Version
:
ELV is prepared to be connected to an external pressure switch
that can control the pump in case of failure in the electronic
controller. To connect the pressure switch and the selector follow
the scheme.
The communication between the Master and the slaves (RS-485)
must be made by a 2-wire shielded cable 0.5mm
Respect the polarity of the RS-485connection:
1 2 3
A B
- 15 -
1 2 3 1 2
A B A B
Failure
See "Protection and errors"
Key RESET
2
section.
3 1 2 3
A B