Options; Selecting Peripheral Equipment Options; Power Regenerative Pwm Converters, Rhc Series - Fuji Electric FRENIC-HVAC User Manual

4.4

Options

4.4.1

Selecting peripheral equipment options

4.4.1.1

Power regenerative PWM converters, RHC series

[ 1 ] Overview
 Possible to reduce power supply facility
capacity
Its power-factor control realizes the same phase
current as the power-supply phase-voltage. The
equipment, thus, can be operated with the
power-factor of almost "1."
This makes it possible to reduce the power
transformer capacity and downsize the other
devices, compared with those required without the
converter.
 Upgraded braking performance
Regenerated energy occurring at highly frequent
accelerating and decelerating operation and
elevating machine operation is entirely returned to
power supply side.
Thus, energy saving during regenerative operation is
possible.
As the current waveform is sinusoidal during
regenerative operation, no troubles are caused to the
power supply system.
Rated continuous regeneration:
Rated regeneration for 1 min
 Enhanced maintenance/protective functions
Failure can be easily analyzed with the trace back
function (option).
1) The past 10 alarms can be displayed with the
7-segment LEDs.
This helps you analyze the alarm causes and take
countermeasures.
2) When momentary power failure occurs, the
converter shuts out the gate to enable continuous
operation after recovery.
3) The converter can issue warning signals like
overload, heat sink overheating, or the end of
service life prior to converter tripping.
 Enhanced network support
The converter can be connected to MICREX-SX, F
series and CC-Link master devices (using option).
The RS-485 interface is provided as standard.
 Making the inverter incompliant with the EMC standards
The inverter combined with the PWM converter is no longer compliant with the EMC standards.
When using 230 V class series inverters of 60 HP or below and 460 V ones of 125 HP or below in combination
with the PWM converter, be sure to remove EMC filter grounding screws (E1, E2). The 230 V class series
inverters of 75HP or above and 460 V ones of 150 HP or above, remove the connector of the EMC filter.
Fire or an accident could occur.
When replacing conventional models (FRENIC5000VG7S, FRENIC5000G11S) with the FRENIC-HVAC, it
may be necessary to change wiring.
Malfunction could occur.
100%
150% (CT use)
120% (VT use)
4-13
4.4 Options