3
2
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
C
US
•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）
×100（D）
Power suppressing reactor
120（W）
×90（H）
×71（D）
Braking unit
140（W）
×280（H）
×160（D）
Dimensions in mm
Dimensions in mm
