Control Techniques Unidrive 3402 User Manual

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Unidrive User Guide 27
Issue Number: 9 www.controltechniques.com
Figure 3-17 Typical ventilation arrangement using an external
heatsink fan
Cooling the control components in the Size 5 power module
The circuit boards, DC-bus capacitors, etc., in the front part of the power
module generate about 700W of heat when the power module is
operating at full load. Since the heatsink fan does not ventilate these
components, a separate air-flow must be used to remove the heat. The
following precautions must be taken:
1. It is recommended that a fan is installed in the lower part of the
enclosure door to drive air into the enclosure. An air vent should be
added to the upper part of the door to remove the exhaust air.
2. It is recommended that the airflow is ducted into the front of the
drive. This airflow must be at least 400m
3
/hr (235ft
3
/min), equivalent
air speed of 1m/s (3.3ft/s) through the front control section of the
size 5 power module.
If the airflow is not ducted into the front of the drive, the airflow into
the enclosure must be at least 1000m
3
/hr (588ft
3
/min), equivalent air
speed of 7m/s (23ft/s) for a enclosure of 800mm x 800mm
x 2200mm.
3. The maximum temperature of the air in the enclosure must not
exceed 40°C (104°F).
Figure 3-18 Alternative location of the exhaust duct in order to
minimize overall height
E
x
h
aust
d
uct
Inlet duct
Power
module
Heatsink
Sharing choke
(for parallel
operation only)
Enclosure
Back-plate
Vent
Fan for
cooling the
control
section
≥ 150mm
(6 in)
E
x
h
aust
d
uct
≤
40 C
(104 F)
0
0
Inlet duct
≥ 150mm (6 in)
≥
1000m /hr
(588ft /min)
3
3
400m /hr
3
(235 ft /min)
3
≥
Inlet duct
≥
1000m /hr
(588ft /min)
3
3
≥
1000m /hr
(588ft /min)
3
3
≥
1000m /hr
(588ft /min)
3
3
1 m/s
(3.3 ft/s)
≥
≥
7 m/s
(23 ft/s)
≥
7 m/s
(23 ft/s)
≥
7 m/s
(23 ft/s)
≥
7 m/s
(23 ft/s)
Exhaust duct
Power
module
Heatsink
Enclosure
Back-plate
Vent
≥ 150mm
(6 in)

Control Techniques Unidrive 3402 Specifications

General

Brand	Control Techniques
Model	Unidrive 3402
Category	Controller
Language	English