Grundfos CUE Series Product Guide

Technical data
Grundfos CUE
47
Surroundings
Note: The CUE comes in a packaging which is not suit-
able for outdoor storage.
Sound pressure level
Maximum sound pressure level measured at a
distance of 1 m from the unit:
1)
The sound pressure level for B3 in the 3 x 525-600 V range is 70 dBA.
The sound pressure level of a motor controlled by a fre-
quency converter may be higher than that of a corre-
sponding motor which is not controlled by a frequency
conver
ter.
Terminal tightening torques
1)
Conductor cross-section ≤ 95 mm
2
.
2)
Conductor cross-section ≥ 95 mm
2
.
Cables
Cable length
Cable cross-section to signal terminals
Note: For
cable cross-section to mains and motor, see
next section Fuses on page 48.
Relative humidity 5-95 % RH
Minimum ambient temperature at full operation 32° F (0 °C)
Minimum ambient temperature at reduced op-
eration
14° F (–10 °C)
Temperature during storage and transportation
–13° F to 149° F
(–25 to 65 °C)
Storage duration Max. 6 months
Maximum altitude above sea level with full per-
formance
3,280 ft (1 km)
Maximum altitude above sea level with per-
formance reduction
6,600 ft (2 km)
CUE, up to 160 amps
Ambient temperature Max. 122 °F (50 °C)
Average ambient temperature over 24 hours Max. 113° F (45 °C)
CUE, 190 amps and above
Ambient temperature Max. 113° F (45 °C)
Average ambient temperature over 24 hours Max. 104° F (40 °C)
Enclosure Sound pressure level [dBA]
A2 60
A3 60
A5 63
B1 67
B2 70
B3
63
1)
B4 63
C1 62
C2 65
C3 67
C4 –
D1 76
D2 74
Enclosure
Tightening torque [Nm]
Mains Motor Ground Relay
A2 1.8 1.8 3 0.6
A3 1.8 1.8 3 0.6
A5 1.8 1.8 3 0.6
B1 1.8 1.8 3 0.6
B2 4.5 4.5 3 0.6
B3 1.8 1.8 3 0.6
B4 4.5 4.5 3 0.6
C1 10 10 3 0.6
C2
14
1)
/24
2)
14
1)
/24
2)
30.6
C3 10 10 3 0.6
C4
14
1)
/24
2)
14
1)
/24
2)
30.6
D1 19 19 19 0.6
D2 19 19 19 0.6
Maximum length, screened motor cable 500 ft (150 m)
Maximum length, unscreened motor cable 1000 ft (300 m)
Maximum length, signal cable 1000 ft (300 m)
Maximum cable cross-section to signal
terminals, rigid conductor
16 AWG (1.5 mm
2
)
Maximum cable cross-section to signal
terminals, flexible conductor
18 AWG (1.0 mm
2
)
Minimum cable cross-section to signal
terminals
22 AWG (0.5 mm
2
)

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