Three-Phase Pumps, 15-30 Hp - Grundfos LFE Instrucciones De Instalación Y Funcionamiento

13.1.10 Three-phase pumps, 3-10 hp
Group 3: Power supply (terminals L1, L2, L3)
Fig. 11 Connection terminals
A galvanic separation must fulfill the requirements for reinforced
insulation including creepage distances and clearances specified
in EN 60335.
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13: GND (frame)
12: Analog output
11: Digital input 4
10: Digital input 3
1: Digital input 2
9: GND (frame)
8: +24 V
7: Sensor input
B: RS-485B
Y: Screen
A: RS-485A
6: GND (frame)
5: +10 V
4: Setpoint input
3: GND (frame)
2: Start/stop

13.2 Three-phase pumps, 15-30 hp

DANGER
Electric shock
Death or serious personal injury
- The user or the installer is responsible for the
installation of correct grounding and protection
according to current national and local standards.
- All operations must be carried out by qualified
personnel.
DANGER
Electric shock
Death or serious personal injury
- Disconnect all electric supply circuits and ensure
these have been switched off for at least 5 minutes
before making any connections in the pump
terminal box. For instance, the signal relay may be
connected to an external supply which is still
connected when the power supply is
disconnected.
CAUTION
Hot surface
Minor or moderate personal injury
- Wear hand protection and use care when handling
terminal box when product is operating. The
surface of the terminal box may be above 158 °F
(70 °C) when the pump is operating.
13.2.1 Preparation
Before connecting the E-pump to the power supply, take the
issues illustrated in the figure below into consideration.
L1
L2
ELCB
L3
PE
Fig. 12 Power supply-connected pump with power switch,
backup fuses, additional protection and protective
grounding
L1
L2
L3
23