Electrical data basic units
Instruction handbook b maXX BM5500, BM5600, BM5700
Document No.: 5.13008.10 Baumüller Nürnberg GmbH
92
of 314
3.4
5)
RMS at an environmental temperature of 40 °C.
6)
At rated power supply voltage the unit supplies rated / maximum output currents. With input voltages above the rated power supply
voltage the output currents must be reduced at constant output power.
Output current [%]
Derating of the output current BM5641, BM5642
Power supply voltage [V]
Figure 43: Derating the output current BM564X acceleration units
7)
The input current must be reduced between 40 °C and 55 °C. Refer to correction factors at changed operating conditions ZEnviron-
mental temperature– on pag
e 55.
8)
The possible overload time at this moment is dependent of the device load and the heat sink temperature. The device load is determined
by the overload monitoring of the device.
9)
For cooling versions S and A, only.
10)
The sum of the transmitted mean effective power via the DC link terminals and the mean effective power at the motor terminals, may
not exceed the specified value continuously.
11)
The range of the output frequency is based on a stationary operation in the linear range of the PWM, i. e. without overmodulation.
The quality of the generated output voltages depends on the ratio betw
een output frequency and current controller frequency f
I-R
( f
I-R
= 1/cycle time current controller).
The maximum output frequency f
max
, generated with high quality, is calculated as follows:
f
max
f
I-R
K
pf
--------
, typical K
Pf
18=
Furthermore the controller sets an upper limit for the output frequency of 599 Hz (please contact the responsible Baumüller sales de-
partment, keyword: export restriction). The range of the ou
tput frequency is defined as follows:
PWM frequency Current controller cycle time Range of the output frequency
2 kHz 250 µs 0 - 225 Hz
4 kHz 125 µs 0 - 450 Hz
8 kHz 62.5 µs 0 - 599 Hz (900 Hz
*)
)
*)
900 Hz could be generated by the controller
The device is able to generate output voltage
s with frequencies between f
max
and 599 Hz and the controller allows that, however the
quality of this voltages cannot be guaranteed.
Typical the devices are marked with the max output frequency at 4 kHz switching frequency: 0 ... 450 kHz.
12)
At a hardware status of < 4006 or if UL508C is complied with: at maximum 4 A
13)
The permitted output current must be reduced complying with ZOutput frequency dependent continuous current derating BM5XXX– on
page 119 and ZOutput freque
ncy dependent maximum current derating BM56XX– on page 120 if the statical output frequency is lower
than 15 Hz and the frequency remains between 0 and 15 Hz for more than 5 seconds.
14)
The life time of the brake transistor depends on a large extent on the load cycle, a load cycle (braking period) of shorter than 18 s re-
duces the brake transistor‘s life
time to below 20 000 hours.
15)
Between the min. waiting time (internal DC link capacitance only) and the max. waiting time (max. DC link capacitance) can be linearly
interpolated depending on the total capacitance value.
16)
The distortion factor of the input current is approx. twice as much the factor at operation with power choke.
The user has to check with the local power supplier
whether an operation without power choke is allowed.
17)
Operating the device without power choke causes an increase of the AC component of the DC link voltage compared with the operation
using a power choke. As result the minimum DC link voltage can be lower than the value with power choke. Therefore the voltage re-
serve can be too low at high speed.
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