Start/Stop Of Pump - Grundfos E Serie Instrucciones De Instalación Y Funcionamiento

Cable glands
Cable glands comply with EN 50626.
1 x M40 cable gland, cable diameter ∅16-∅28
•
1 x M20 cable gland, cable diameter ∅9-∅17
•
2 x M16 cable gland, cable diameter ∅4-∅10
•
• 2 x M16 knock-out cable entries.
Warning
If the supply cable is damaged, it must be replaced
by qualified staff.
Grid types
Three-phase E-pumps can be connected to all grid types.
Warning
Do not connect three-phase E-pumps to a mains
supply with a voltage between phase and earth of
more than 440 V.

5.4.8 Start/stop of pump

The number of starts and stops via the mains voltage
Caution
must not exceed 4 times per hour.
When the pump is switched on via the mains, it will start after
approx. 5 seconds.
If a higher number of starts and stops is desired, use the input for
external start/stop when starting/stopping the pump.
When the pump is switched on via an external on/off switch, it will
start immediately.
5.4.9 Connections
If no external on/off switch is connected, connect
Note
terminals 2 and 3 using a short wire.
As a precaution, the wires to be connected to the following
connection groups must be separated from each other by
reinforced insulation in their entire lengths:
Group 1: Inputs
• start/stop, terminals 2 and 3
• digital input, terminals 1 and 9
• setpoint input, terminals 4, 5 and 6
• sensor input, terminals 7 and 8
• GENIbus, terminals B, Y and A
All inputs (group 1) are internally separated from the mains-
conducting parts by reinforced insulation and galvanically
separated from other circuits.
All control terminals are supplied with protective extra-low voltage
(PELV), thus ensuring protection against electric shock.
Group 2: Output (relay signal, terminals NC, C, NO)
The output (group 2) is galvanically separated from other circuits.
Therefore, the supply voltage or protective extra-low voltage can
be connected to the output as desired.
Group 3: Mains supply (terminals L1, L2, L3)
Group 4: Communication cable (8-pin male socket) - only
TPED
The communication cable is connected to the socket in group 4.
The cable ensures communication between the two pumps,
whether one or two pressure sensors are connected. See section
5.7 Communication cable for TPED
The selector switch in group 4 enables changeover between the
operating modes "alternating operation" and "standby operation".
See description in section 6.2.1 Additional operating modes -
TPED pumps.
12
pumps.
Fig. 14 Connection terminals - TPE, NKE, NKGE and NBE,
NBGE
1: Digital input
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