English (US)
6
6.1.9 Connections
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 power-
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: Power supply (terminals N, PE, L)
Fig. 4
Connection terminals
A galvanic separation must fulfill the requirements for reinforced
insulation including creepage distances and clearances specified
in EN 60335.
6.2 Three-phase pumps, 1 - 10 Hp
6.2.1 Preparation
Before connecting the E-pump to the power supply, take the
issues illustrated in the figure below into consideration.
Fig. 5
Power supply-connected pump with power switch,
backup fuses, additional protection and protective
grounding
6.2.2 Protection against electric shock - indirect contact
EN 50178 and BS 7671 specify the following precautions when
leakage current > 3.5 mA:
• The pump must be stationary and installed permanently.
• The pump must be permanently connected to the power
supply.
• The grounding connection must be carried out as duplicate
leads.
Protective ground leads must always have a yellow/green (PE) or
yellow/green/blue (PEN) color marking.
6.2.3 Backup fuses
For recommended fuse sizes, see section
22.1 Supply voltage
on
page 33.
6.2.4 Additional protection
If the pump is connected to an electric installation where an
ground leakage circuit breaker (ELCB) is used as additional
protection, the circuit breaker must be of a type marked with the
following symbols:
1RWH
1RWH
If no external on/off switch is connected, connect
terminals 2 and 3 using a short wire.
T
M
02
07
95
09
04
0/1
10K
RUN
STOP
NC C NO
N PE L
1 9 8 7
6 5 4 3 2
B Y A
0-10 V
0/4-20 mA
4-20 mA
0/4-20 mA
0-10 V
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
Group 1
Group 3
Group 2
Warning
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.
Warning
Never make any connections in the pump
terminal box unless all electric supply circuits
have been switched off for at least 5 minutes.
Note for instance that the signal relay may be
connected to an external supply which is still
connected when the power supply is
disconnected.
The above warning is indicated on the motor terminal
box by this yellow label:
T
M
00
92
70
46
96
Warning
The pump must be grounded in accordance with
national regulations.
As the leakage current of 5 - 10 Hp (4 - 7.5 kW)
motors is > 3.5 mA, take extra precautions when
grounding these motors.
L1
L2
L3
L2
L1
L3
PE
ELCB
ELCB
DBP-1 - GRUNDFOS PUMP CRE - 99392005
Summary of Contents for SPKE Series
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