Lenze MGXQK DC motors - Manual (Page 9)

9
5. Assembly / Installation
5.1 Preparations
¯
Unpack motors and check for transport
damages.
¯
If necessary, remove fastening device of
the key and residuals of the corrosion
protection.
¯
The motors were checked at the factory
and are ready for use.
5.2 Site of installation, nominal conditions,
and influencing factors
n
Do not operate in hazardous areas !
The motors are designed for the following
nominal conditions:
¯
Supply with half-- or fully controlled bridge
rectifier
¯ Rated power is based on a current form
factor of
F
F
= I
eff
/ I
arithm.
= 1.05
(see chapter 4.2.1)
¯
Ambient or cooling air temperature up to
+40 5C (see chapter 4.2.1)
¯
Installation height up to 1000 m above sea
level (see chapter 4.2.1)
¯
Operation within the permissible control
range or self--ventilated motors
¯ Ensure unimpeded flow of incoming and
outgoing air
¯
Avoid re--circulating of warm outlet air by
the motor
5.3 Installation
n
Ensure that no foreign matter penetrates
into the motor during assembly and
commissioning!
¯
Prepare fixing according to the design,
weight, and torque of the motor.
¯ Before fixing the motor, the foot and flange
faces must evenly rest on. Insufficient
alignment of the motors reduces the life of
the bearings and transmission elements!
n Assembly of clutches and other
transmission elements according to the
instructions. To prevent damage of the
bearings, avoid under all circumstances
impacts on shafts and exceeding of the
permissible radial and axial forces!
¯
Ensure sufficient space for unimpeded
maintenance.
5.4 Electrical connection
n
Make electrical connections only when no
voltage is applied! Danger of unintended
startings or electrical shocks.
n
Electrical connections must only be made
by skilled personnel.
¯ Operate DC shunt motors only at DC
voltage. The supply is normally via DC
speed controllers. Make sure that the
supply voltage / controller output voltage is
identical with the nameplate data.
¯ A separate blower, which may be
connected, requires a single--phase or
three--phase AC voltage according to the
nameplate.
¯
A spring--loaded brake, which may be
attached, requires a suitable DC voltage or
an AC voltage which corresponds to the
connected rectifier.
¯
Dimension the connecting cables
sufficiently large to avoid a
non--permissible heating.
current [A] ≤6 ≤10 ≤16 ≤20 ≤25 ≤35 ≤50
Cable
cross-section
[mm 2 ]
0.75 1 1.5 2.5 4 6 10
Rated
current in [A]
≤63 ≤80 ≤100 ≤125 ≤160 ≤200 ≤250
Cable
cross-section
in [mm 2 ]
16 25 35 50 70 95 120
When the cables are very long, select a
cross--section one size larger to reduce
losses.
¯
The motor cable cannot be protected by
the thermal sensors of the motor winding.
Provide measures according to DIN 57100
/ VDE 0530.
¯
Make electrical connection according to
the connecting diagram which is attached
to every motor. The connecting diagrams
for the standard factory design are shown
in fig. 2 and fig. 3.
5.2
5.3
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