31
Bus input
Grundfos bus protocol, GENIbus protocol, RS-485.
Screened 3-core cable: 0.2-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 500 m.
20. Technical data – three-phase pumps,
0.75-7.5 kW
20.1 Supply voltage
3 x 380-480 V – 10 %/+ 10 %, 50/60 Hz – 2 %/+ 2 %, PE.
Cable: Max 10 mm
2
/ 8 AWG.
Use min. 70 °C copper conductors only.
Recommended fuse sizes
Motor sizes from 0.75 to 5.5 kW: Max. 16 A.
Motor size 7.5 kW: Max. 32 A.
Standard as well as quick-blow or slow-blow fuses may be used.
20.2 Overload protection
The overload protection of the E-motor has the same
characteristic as an ordinary motor protector. As an example, the
E-motor can stand an overload of 110 % of I
nom
for 1 min.
20.3 Leakage current
The leakage currents are measured in accordance with
EN 61800-5-1.
20.4 Inputs/output
Start/stop
External potential-free contact.
Voltage: 5 VDC.
Current: < 5 mA.
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Digital
External potential-free contact.
Voltage: 5 VDC.
Current: < 5 mA.
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Setpoint signals
•
Potentiometer
0-10 VDC, 10 k
Ω
(via internal voltage supply).
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 100 m.
•
Voltage signal
0-10 VDC, R
i
> 50 k
Ω
.
Tolerance: + 0 %/– 3 % at maximum voltage signal.
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 500 m.
•
Current signal
DC 0-20 mA/4-20 mA, R
i
= 175
Ω
.
Tolerance: + 0 %/– 3 % at maximum current signal.
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 500 m.
Sensor signals
•
Voltage signal
0-10 VDC, R
i
> 50 k
Ω
(via internal voltage supply).
Tolerance: + 0 %/– 3 % at maximum voltage signal.
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 500 m.
•
Current signal
DC 0-20 mA/4-20 mA, R
i
= 175
Ω
.
Tolerance: + 0 %/– 3 % at maximum current signal.
Screened cable: 0.5-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 500 m.
Internal power supplies
•
10 V power supply for external potentiometer:
Max. load: 2.5 mA.
Short circuit protected.
•
24 V power supply for sensors:
Max. load: 40 mA.
Short circuit protected.
Signal relay output
Potential-free changeover contact.
Maximum contact load: 250 VAC, 2 A, cos
ϕ
0.3-1.
Minimum contact load: 5 VDC, 10 mA.
Screened cable: 0.5-2.5 mm
2
/ 28-12 AWG.
Maximum cable length: 500 m.
Bus input
Grundfos bus protocol, GENIbus protocol, RS-485.
Screened 3-core cable: 0.2-1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 500 m.
21. Technical data – three-phase pumps,
11-22 kW
21.1 Supply voltage
3 x 380-480 V – 10 %/+ 10 %, 50/60 Hz – 3 %/+ 3 %, PE.
Cable: Max. 10 mm
2
/ 8 AWG
Use min. 70 °C copper conductors only.
Recommended fuse sizes
Standard as well as quick-blow or slow-blow fuses may be used.
21.2 Overload protection
The overload protection of the E-motor has the same
characteristic as an ordinary motor protector. As an example, the
E-motor can stand an overload of 110 % of I
nom
for 1 min.
21.3 Leakage current
Earth leakage current > 10 mA.
The leakage currents are measured in accordance with
EN 61800-5-1.
Motor size
[kW]
Leakage current
[mA]
0.75 to 3.0 (supply voltage < 460 V)
0.75 to 3.0 (supply voltage > 460 V)
< 3.5
< 5
4.0 to 5.5
< 5
7.5
< 10
Motor size [kW]
Max. [A]
2-pole
4-pole
11
11
32
15
15
36
18.5
18.5
43
22
22
51
