32
21.4 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
= 250
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
= 250
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.
22. Other technical data
EMC (electromagnetic compatibility to EN 61800-3)
Contact Grundfos for further information.
Motor [kW]
Emission/immunity
2-pole
4-pole
0.37
0.37
Emission:
Motors may be installed in
residential
areas
(first environment), unrestricted
distribution, corresponding to CISPR11,
group 1, class B.
Immunity:
Motors fulfil the requirements for both
the first and second environment.
0.55
0.55
0.75
0.75
1.1
1.1
1.5
1.5
2.2
2.2
3.0
3.0
4.0
4.0
5.5
–
7.5
–
–
5.5
Emission:
The motors are category C3,
corresponding to CISPR11, group 2,
class A, and may be installed in
industrial areas
(second environment).
If equipped with an external Grundfos
EMC filter, the motors are category C2,
corresponding to CISPR11, group 1,
class A, and may be installed in
residential areas
(first environment).
–
7.5
11
11
15
15
18.5
18.5
22
–
Warning
When the motors are
installed in residential
areas, supplementary
measures may be required
as the motors may cause
radio interference.
Motor sizes 11, 18.5 and 22 kW comply with
EN 61000-3-12 provided that the short-circuit power
at the interface point between the user's electrical
installation and the public power supply network is
greater than or equal to the values stated below. It is
the responsibility of the installer or user to ensure,
by consultation with the power supply network
operator, if necessary, that the motor is connected
to a power supply with a short-circuit power greater
than or equal to these values:
Motor size
[kW]
Short-circuit power [kVA]
11
1500
15
-
18.5
2700
22
3000
Note
15 kW motors do not comply with
EN 61000-3-12.
By installing an appropriate harmonic filter between
the motor and the power supply, the harmonic
current content will be reduced. In this way the
15 kW motor will comply with EN 61000-3-12.
Immunity:
The motors fulfil the requirements for both the first
and second environment.
