Signal Cables; E-Pump Electrical Connections - Grundfos LFE Instrucciones De Instalación Y Funcionamiento

Group 3: Power supply (terminals L1, L2, L3)
Fig. 16 Connection terminals
A galvanic separation must fulfill the requirements for reinforced
insulation including creepage distances and clearances specified
in EN 61800-5-1.
26
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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

13.3 Signal cables

• Use screened cables with a conductor cross-section of min. 28
AWG and maximum 16 AWG for external On/Off switch, digital
input, setpoint and sensor signals.
• Connect the screens of the cables to frame at both ends with
good frame connection. The screens must be as close as
possible to the terminals. See fig. 17.
Fig. 17 Stripped cable with screen and wire connection
• Always tighten screws for frame connections whether a cable
is fitted or not.
• Make the wires in the pump terminal box as short as possible.

13.4 E-pump electrical connections

13.4.1 Type key
DPI +T 0-6 G 1/2" 020 E, Set
Type
Temperature sensor:
+T = with temperature Sensor
3
Flow range [m /h]
Thread size
Output signal:
020 = 4-20 mA
O-ring material:
E = EPDM
F = FKM
Set = Complete pressure transmitter