Grundfos E-pumps

Grundfos E-pumps
5
Wiring diagram, 15 - 30 Hp
3 x 480 V - 10 %/+ 10 %, 60 Hz
L1
L2
L3
PE
ELCB
External switch
Max. 26/51 A
L1
L2
L3
TM00 9270 4696
Group 2
Group 3
Three-phase MLE motors
Fig. 55 Wiring diagram, three-phase MLE motors,
15 - 30 Hp
Other connections
Note: 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, 9 and 10, 9 and 11)
• setpoint input (terminals 4, 5 and 6)
• sensor input (terminals 7 and 8)
• GENIbus (terminals B, Y and A)
• Analog output (terminals 12 and 13)
• Sensor input 2 (terminals 14 and 15)
• PT100 (terminals 17, 18, 19 and 20).
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 by protective
extra-low voltage (PELV), thus ensuring protection
against electric shock.
• Group 2: Output relay signal
(terminals NC, C1, NO, and NC, C2, 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 L1, L2, L3).
A galvanically safe separation must fulfill the
requirements for reinforced insulation including
creepage distances and clearances specified in
EN 61800-5-1.
Fig. 56 Connection terminals
20: PT 100 B
19: PT 100 B
18: PT 100 A
17: PT 100 A
16: GND (frame)
15: +24 V
14: Sensor input 2
13: GND
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
Group 1
TM05 2986 0812
51