Eurotherm 637+/D6R KD6R, Product Manual

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Product-manual Model: 637+/D6R KD6R 07-02-09-01-E-V0402.doc
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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 derated like follows.
This deration effects the max. reachable speed of the applied motor.
Three-phase-supply:
the unloaded output voltage will be derated to approx. 90%, maximum 85 %
Single-phase: supply: 50 – 60Hz
only drive 637+ / ..02 up to 06
see following diagram:
Hints for setup:
To avoid unexpected tripping of undervoltage threshold
(EASYRIDER

Windows - Software), this value should be set to default.
Required motor-terminal-voltage forspecified speed.
Approximation: (up to 3000RPM)
Ukl = 1,2 * (EMF * n / 1000) + I * (Rph + RL) [V]
Ukl required motorvoltage [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 [Aeff]
Derating of servo drive output voltage in case of single-phase supply
2
4
6
8
10
20 40 60 80 100
0
0
12
[%]
Output voltage in % of unloaded condition