VFD68 Variable Frequency Drives (575 VAC)
6
•
Do not install the modules in airtight enclosures.
•
Do not install heat-generating devices that may cause the temperature to exceed the ambient operating
limit in the same enclosure as the modules.
The VFD68 Drive has been approved for use in an enclosure. Approval tests were conducted under the
conditions in Table 2.
When mounting the VFD68 Drive in an enclosure, ensure that the specified space around the drive is
maintained, and that the ambient conditions are within the specified limits.
IMPORTANT:
The drive is intended to be mounted in an enclosure that only allows access by trained
and authorized personnel, and that prevents the ingress of contamination. It is designed for use in an
environment classified as pollution degree 2 in accordance with IEC 60664-1. This means that only dry,
non-conducting contamination is acceptable.
Table 2: 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 3 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 to 55 Hz (directions of x, y, and z axes)
Table 3: Maximum Current Output Derating above 50°C by VFD68Dxx Drive Model
VFD68Dxx 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)
VFD68DFM
0.75 (1)
1.7
1.4
1.1
VFD68DGM
1.5 (2)
2.7
2.3
1.8
VFD68DHM
2.2 (3)
4.0
3.4
2.8
VFD68DJN
3.7 (5)
6.1
5.1
4.2
VFD68DKN
5.5 (7.5)
9.0
7.6
6.3
VFD68DLN
7.5 (10)
12.0
10.2
8.4
VFD68
x = Measurement Position
5 cm
(2 in.)
5 cm
(2 in.)
5 cm
(2 in.)
x
x
x
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