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07-02-10-01-E-V0304.doc
Product Manual Type:
637f
17
Range
Data
1.3.5
Single- and three-phase supply
Due to the line-ripple of DC-Bus, the rate of usable output voltage is reduced like follows.
This reduced effects the max. reachable speed of the applied motor.
Three-phase supply:
the unloaded output voltage will be reduced to approx. 90%, maximum 85 %
Single-phase supply: 50 – 60 Hz
only servo drive 637f / ..02 up to 06
see following diagram:
Hint for parameterization:
To avoid unexpected tripping of under voltage threshold, the parameter setting should be left on default
values (EASYRIDER
®
Windows – Software).
Required motor-terminal-voltage for specified speed.
Approximation: (up to 3000RPM)
Ukl = 1,2
*
(EMF
*
n
/
1000) + I
*
(Rph + RL) [V]
Ukl
required motor voltage [V
RMS
]
EMF Back-EMF of motor [V
RMS
] / 1000 RPM
Rph resistance of motor (between terminals) [
Ω
]
RL
line resistance of motor cable [
Ω
]
I motor-current
[A
RMS
]
Output current [A
]
RMS
Derating of servo drive output voltage in case of single-phase operationen
2
4
6
8
10
20 40 60 80
100
0
0
12
[%]
Output voltage in % of unloaded condition
