YASKAWA VARISPEED-656RC5

32
Fully Supports Inverters
When power regeneration can be
advantageous:
Cranes, elevators, centrifugal separators,
winders, etc.
Varispeed G7, Varispeed F7,
VS-686SS5, VS-626MC5, etc.
The VS-656RC5 is a power regenerative unit
with both braking and regenerative functions.
The VS-656RC5 shows great energy-saving
performance in combination with an inverter.
Because the VS-656RC5 does not require a
braking resistor unit, it requires less space and
enhances braking ability.
The VS-656RC5 will dramatically affect
applications with large minus loads such as
cranes and elevators.
The VS-656RC5 operates only at power regeneration with 120˚ current conduction.
It efficiently regenerates load energy to the power supply, which results in significant energy savings.
90%
0
0
0
100%
150%
70%
10%
30%
130%
55.5kW
55.5kW
25.9kW
3.7kW
33.3kW
11.1kW
15
sec.
15
sec.
2
sec.

2
sec.

20
sec.

20
sec.

2
sec.

2
sec.

78
sec.
Speed
Winding
Unwinding
Torque
Power
Helps the Energy-Saving Drive
The VS-656RC5 requires less than half the area and is less than half the bulk of braking resistor
systems that have a braking unit + braking resistor.
A magnetic contactor is not needed.
Requires Less Space
VS-656RC5 can do Three jobs with One Unit
Dramatically improved braking ability.
Calculations of torque, time, and frequency are not needed.
Enhances Braking Ability
Cranes Centrifugal Separator
•Without options: Approx. 10 to 20%/continuous rating
•With standard options: Approx. 100 to 130%/max. 10sec.,
10%ED
＊ Except for conditions above, additional options will be required.
– 63%
– 72%
Area:
Exampleof200V15kWwithstandardoptions Exampleof200V15kW
Bulk :
20%
100%
120%
39kW
6kW
36kW
180
sec.
180
sec.
180
sec.
180 sec.( approx. 12 min.)
180
sec.
130%
0
0
0
Speed
Torque
Power
OperatingConditions:5000h/yearElectricalcosts＄0.12/kWh
ElectricPowerConsumption:P=(55.5kW××2+33.3kW×15+11.1××2)×
−(3.7kW××2+25.9kW×5+48.1××2)×0.9×0.95
=8.49kW−4.82kW=3.67kW
ElectricalCosts＝3.67×5,000×0.12＝＄2202
ResistorDischargeType
Yousave5094−2202＝
＄
2892
／year 
1
78

1
2

1
2

1
2

1
2

1
0.9×0.95
Note:Whenusinganinverterwitharesistordischarge,brakingresistorand
brakingresistorunitrequire3timesthestandardratedpower.
P＝8.49kW
ElectricalCosts＝8.49×5,000×0.12＝
＄5094
Rated load: 10 t Rated Winding Speed: 20 m/min Applied Motor: 37 kW, 6-pole, 1150 r/min
MotorEfficiency:90%
InverterEfficiency:95%
MotorEfficiency:90%
InverterEfficiency:95%
OperatingConditions:5000h/yearElectricalcosts＄0.12/kWh
ElectricPowerConsumption:P=(39kW××180+6kW×180)×
 − (36kW××180)×0.9×0.95
=7.46kW −3.85kW =3.61kW
ElectricalCosts＝3.61×5,000×0.12＝＄2166
ResistorDischargeType
Yousave4476−2166＝
＄
2310
／year 
1
720

1
2

1
2

1
0.9×0.95
Note:Whenusinganinverterwitharesistordischarge,brakingresistorand
brakingresistorunitrequire2.5timesthestandardratedpower.
P＝7.46kW
ElectricalCosts＝7.46×5,000×0.12＝
＄4476
Applied Motor: 30kW, 4-pole
(for industrial waste)
■

Applications
■
Applicable Inverters
■
Safety Standards
Power
Regeneration
Braking
Resistor
Unit
Braking
Unit
Connection
Three-phase AC power supply
Inverter
Power flow
during motoring
Power flow during
regenerating
Power coordinating reactor
Current
suppressing
reactor
Diode
converter
Inverter
VS-656RC5
FU
IM
CEmarking
UL／cULStandard
LISTED
CUS
•80%/continuous rating
•100%/1min., 25%ED
•150%/30 sec.
＊ Except for conditions above, apply a higher capacity unit.
■Braking Resistor System
■Braking Resistor
System
■VS-656RC5
■VS-656RC5
Brakingresistor
356（W）×543（H）×260（D）
VS-656RC5
200（W）×300（H）×265（D）
Powercoordinatingreactor
180（W）×90（H）×10 0（D）
Powersuppressingreactor
120（W）×90（H）×71（D）
Brakingunit
14 0（W）×280（H）×160（D）
Dimensionsinmm Dimensionsinmm