Eng
lish (US)
42
Sensor signals
• Voltage signal
0-10 VDC, R
i
> 50 k
˖
(via internal voltage supply).
Tolerance: + 0 %/- 3 % at maximum voltage signal.
Screened cable: 20-16 AWG (0.5 - 1.5 mm
2
).
Maximum cable length: 1640 ft (500 m).
• Current signal
DC 0-20 mA / 4-20 mA, R
i
= 250
˖
.
Tolerance: + 0 %/- 3 % at maximum current signal.
Screened cable: 20-16 AWG (0.5 - 1.5 mm
2
).
Maximum cable length: 1640 ft (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
˳
0.3 - 1.
Minimum contact load: 5 VDC, 10 mA.
Screened cable: 0.5 - 2.5 mm
2
/ 28-12 AWG.
Maximum cable length: 1640 ft (500 m).
Bus input
Grundfos bus protocol, GENIbus protocol, RS-485.
Screened 3-core cable: 28-16 AWG (0.2 - 1.5 mm
2
).
Maximum cable length: 1640 ft (500 m).
31.5 Other technical data
EMC (electromagnetic compatibility to EN 61800-3)
Contact Grundfos for further information.
Motor
[hp]
Emission/immunity
3
Emission:
The motors may be installed in residential areas (first
environment), unrestricted distribution,
corresponding to CISPR11, group 1, class B.
Immunity:
The motors fulfil the requirements for both the first
and second environment.
5
7.5
10
15
20
25
30
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).
Warning
When the motors are installed in
residential areas, supplementary
measures may be required as the
motors may cause radio interference.
Motor sizes 15, 25, and 30 hp 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
[hp]
Short-circuit power
[kVA]
15
1500
20
-
25
2700
30
3000
1RWH
1RWH
20 hp 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
20 hp motor will comply with EN 61000-3-12.
Immunity:
The motors fulfill the requirements for both the first
and second environment.
Summary of Contents for VLSE
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