Product Manual

CU331SP variable frequency drive
SQ, SQE, CU 331, and SP
10
49
CU331SP technical data
Enclosure
All CU331SP enclosures are size B1.
The enclosure rating can be either IP55 / TYPE 12 or
IP66 / TYPE 4X.
Main dimensions and weight
Fig. 49 Enclosure B1
Note: Dimensions shown here for the CU331SP
enclosures are maximum height, width and depth.
Surroundings
The CU331SP comes in a packaging which is not
suitable for outdoor storage.
Terminal tightening torques
Cable length
Fuses and cable cross-section
Always comply with national and local regulations as to
cable cross-sections.
Cable cross-section to signal terminals
Non-UL fuses and conductor cross-
section to mains and motor
1)
Screened motor cable, unscreened supply cable.
UL fuses and conductor cross-section to
mains and motor
1)
Screened motor cable, unscreened supply cable.
Inputs and outputs
Mains supply (L1, L2)
Do not use the power supply for switching the
CU331SP on and off.
TM03 9002 2807
Enclosure
Height
[in]
Width
[in]
Depth
[in]
B1
AaBbC
18.9 17.9 9.5 8.3 10.2
Screw holes [in]
Weight
[lbs]
cdef
0.47 0.75 0.35 0.35 50.7
Relative humidity 5-95 % RH
Ambient temperature
Max. 122 °F
(50 °C)
Average ambient temperature over 24 hours
Max. 113 °F
(45 °C)
Minimum ambient temperature at full operation 32 °F (0 °C)
Minimum ambient temperature at reduced
operation
14 °F (-10 °C)
Temperature during storage and transportation
-13 to 150 °F
(-25 to 65 °C)
Storage duration Max. 6 months
Maximum altitude above sea level without
performance reduction
3280 ft (1000 m)
Maximum altitude above sea level with
performance reduction
9840 ft (3000 m)
Enclosure
Tightening torque [ft-lb]
Mains Motor Earth Relay
B1 1.3 1.3 2.2 0.4
Maximum length, screened motor cable 500 ft (152 m)
Maximum length, unscreened motor cable 1000 ft (305 m)
Maximum length, signal cable 1000 ft (305 m)
Maximum cable cross-section to signal terminals,
rigid conductor
AWG 14
Maximum cable cross-section to signal terminals,
flexible conductor
AWG 18
Minimum cable cross-section to signal terminals AWG 20
Typical shaft
power P2
[Hp]
Maximum
fuse size
[A]
Fuse
type
Maximum conductor
cross section
1)
[AWG]
[mm
2
]
240gG710
340gG710
580gG710
Typical shaft
power P2
[Hp]
Maximum
fuse size
[A]
Bussmann
RK1
Maximum conductor
cross section
1)
[AWG}
240KTN-R407
340KTN-R407
580KTN-R807
Supply voltage 200-240 V ± 10 %
Supply frequency 60 Hz
Maximum temporary imbalance between
phases
3 % of rated value
Leakage current to earth > 3.5 mA
Number of cut-ins Max. 1 time/min.