Grundfos CUE Series Product Guide

Accessories
Grundfos CUE
56
Output filters
Grundfos offers two types of output filter as accessories
for the CUE:
•dU/dt filters
• sine-wave filters.
The filters are in IP20/NEMA1 enclosure.
Fig. 62 Wall-mounted sine-wave filters
Use of output filters
The table below explains in which cases an output filter
is required. From the table, it can be seen if a filter is
needed and which type to use.
The lengths stated apply to the motor cable.
For information about installation, see page 34.
GrA 4456
Pump type
Typical shaft
power P2
dU/dt filter
Sine-wave
filter
SP, BM, BMB with
380 V motor and up
Up to 7.5 kW
–
0-984 ft
(0-300 m)
11 kW and up
0-492 ft
(0-150 m)
492-984 ft
(150-300 m)
Other pumps, noise
reduction
Up to 7.5 kW
–
0-984 ft
(0-300 m)
11 kW and up
0-492 ft
(0-150 m)
492-984 ft
(150-300 m)
Other pumps, higher
noise reduction
Up to 7.5 kW
–
0-984 ft
(0-300 m)
11 kW and up
–
0-984 ft
(0-300 m)
Pumps with 690 V
motor
All
0-492 ft
(0-150 m)
492-984 ft
(150-300 m)

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20