VFD68 Variable Frequency Drives
9
Table 3: Environmental Considerations
Surrounding Air
Temperature
1
1.
Surrounding air temperature is a temperature measured at a measurement position in an enclosure. Ambient air
temperature is a temperature outside an enclosure. The VFD68 is designed to operate above 50°C by following the
maximum output current derating limits show in Table 4 and Table 5 and Figure 2.
-40 to 50°C (-40 to 122°F)
as measured 5 cm from
the VFD
Ambient Humidity
90% RH or less (Non-condensing)
Storage Temperature
-40 to 65°C (-40 to 149°F)
Atmosphere
Indoors (no corrosive and flammable gases, oil mist, dust and dirt.)
Altitude Limit
2
: Below 1,000 m (3,280 ft) above sea level
2.
Altitude limit given is for standard operation of the VFD. For operation at higher altitudes, derate by 3% for each 500 m
(1,640.4 ft), up to a maximum of 2,500 m (8,202 ft) (91% derating).
Vibration Limit: 5.9 m/s
2
(19.4 ft/s
2
)
or less at 10–55 Hz (directions of x, y, z axes)
Table 4: Maximum Current Output Derating above 50°C by VFD68Bxx Drive Model
VFD68Bxx Models
Rated Capacity
kW (HP)
Maximum Output
Current at 50°C
(Amperes)
Maximum Output
Current at 60°C
(Amperes)
Maximum Output
Current at 70°C
(Amperes)
VFD68BBB
0.1 (1/8)
0.8
0.6
0.5
VFD68BCB
0.2 (1/4)
1.4
1.1
0.9
VFD68BDC
0.4 (1/2)
2.5
2.1
1.7
VFD68BFD
0.75 (1)
4.2
3.5
2.9
VFD68BGG
1.5 (2)
7.0
5.9
4.9
VFD68BHG
2.2 (3)
10.0
8.5
7.0
VFD68BJK
3.7 (5)
16.5
14.0
11.5
VFD68BKL
5.5 (7-1/2)
23.8
20.2
16.6
VFD68BLL
7.5 (10)
31.8
27.0
22.2
VFD68BMP
11 (15)
45.0
38.2
31.5
VFD68BNP
15 (20)
58.0
49.3
40.6
VFD68
x = Measurement Position
5 cm
(2 in.)
5 cm
(2 in.)
5 cm
(2 in.)
x
x
x
F
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