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3. Product description
Festo P.BE-CMMP-AS-3A-HW-EN 0708NH
27
3.2
Power supply
3.2.1
Single-phase AC supply with active PFC
The CMMP-AS servo positioning controller satisfies the following requirements for a servo
drive controller with an active PFC stage:
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Satisfies the current standards for mains grid overshooting (EN 61000-3-2)
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cos > 0.97 at rated operation (at the rated power of the PFC stage)
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Sinewave mains power, distortion factor < 4% at rated operation (at the rated power of
the PFC stage)
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Regulated average value of intermediate circuit voltage from 360 … 380 VDC (with
active PFC)
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Insensitive to weak mains grids and to short-term mains interruptions. The servo posi-
tioning controller continues operation without malfunctioning (as far as is physically
possible).
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Wide voltage range, nominal voltage of 230 VAC ( 10%)
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Nominal frequency range of 50 … 60 Hz 10%
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Alternative DC supply
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Electrical impulse resistance allowing combination with servo converters. The CMMP-AS
servo positioning controller allows dynamic changing between motor and generator
operation in both directions without dead times.
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No end-user parameterising required
Switch-on behaviour:
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As soon as the CMMP-AS is provided with mains voltage, the intermediate circuit is
charged (< 1 s) via the braking resistor, with the intermediate circuit relay deactivated.
The PFC stage is not switched on at this point.
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After the intermediate circuit has been successfully pre-charged, the relay engages
and the intermediate circuit is "hard" connected to the mains supply. The PFC stage
is then activated and the intermediate stage is loaded with the full voltage.
-
If the intermediate circuit voltage is too low after successful charging, because the
mains input voltage lies below the permitted level for PFC operation, the PFC stage
remains blocked and a warning is displayed on the sever-segment display.
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If the CMMP-AS servo positioning controller is supplied with less than the nominal
voltage of 230 VAC then, after pre-loading is completed, a power reduction for the PFC
stage is calculated based on the actual intermediate circuit voltage (see chapter A.2
Power supply [X9] page 102).
Summary of Contents for CMMP-AS-C2-3A
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