Inputs/Output; Other Technical Data - Grundfos CRE Montage- Und Betriebsanleitung

21.4 Inputs/output

Start/stop
External potential-free contact.
Voltage: 5 VDC.
Current: < 5 mA.
2
Screened cable: 0.5 - 1.5 mm
Digital
External potential-free contact.
Voltage: 5 VDC.
Current: < 5 mA.
2
Screened cable: 0.5 - 1.5 mm
Setpoint signals
• Potentiometer
0-10 VDC, 10 kΩ (via internal voltage supply).
Screened cable: 0.5 - 1.5 mm
Maximum cable length: 100 m.
• Voltage signal
0-10 VDC, R > 50 kΩ.
i
Tolerance: + 0 %/- 3 % at maximum voltage signal.
Screened cable: 0.5 - 1.5 mm
Maximum cable length: 500 m.
• Current signal
= 250 Ω.
DC 0-20 mA / 4-20 mA, R
i
Tolerance: + 0 %/- 3 % at maximum current signal.
Screened cable: 0.5 - 1.5 mm
Maximum cable length: 500 m.
Sensor signals
• Voltage signal
0-10 VDC, R > 50 kΩ (via internal voltage supply).
i
Tolerance: + 0 %/- 3 % at maximum voltage signal.
Screened cable: 0.5 - 1.5 mm
Maximum cable length: 500 m.
• Current signal
= 250 Ω.
DC 0-20 mA / 4-20 mA, R
i
Tolerance: + 0 %/- 3 % at maximum current signal.
Screened cable: 0.5 - 1.5 mm
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.
2
Screened cable: 0.5 - 2.5 mm
Maximum cable length: 500 m.
Bus input
Grundfos bus protocol, GENIbus protocol, RS-485.
Screened 3-core cable: 0.2 - 1.5 mm
Maximum cable length: 500 m.
30
/ 28-16 AWG.
/ 28-16 AWG.
2
/ 28-16 AWG.
2
/ 28-16 AWG.
2
/ 28-16 AWG.
2
/ 28-16 AWG.
2
/ 28-16 AWG.
/ 28-12 AWG.
2
/ 28-16 AWG.

21.5 Other technical data

EMC (electromagnetic compatibility to EN 61800-3)
Motor
Emission/immunity
[kW]
1.1
Emission:
1.5
The motors may be installed in residential areas
(first environment), unrestricted distribution,
2.2
corresponding to CISPR11, group 1, class B.
3.0
4.0
Immunity:
The motors fulfil the requirements for both the first
5.5
and second environment.
7.5
11 Emission:
15 The motors are category C3, corresponding to
18.5 CISPR11, group 2, class A, and may be installed in
22 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).
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]
11
15
18.5
22
15 kW motors do not comply with
Note
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.
Contact Grundfos for further information.
Short-circuit power
[kVA]
1500
-
2700
3000