Product manual

Technical Specifications
9-6
650 Series AC Drive
Internal Dynamic Braking Circuit (400V only)
The dynamic braking circuit is intended for with short term stopping or braking. The Frame 2
product is rated for continuous switch operation, however the Frame 3 product is rated for a
maximum 30% duty. DC link brake voltage : 750V
Motor Power
Motor PowerMotor Power
Motor Power
(kW/Hp)
(kW/Hp)(kW/Hp)
(kW/Hp)
Brake Switch
Brake SwitchBrake Switch
Brake Switch
Peak Current
Peak CurrentPeak Current
Peak Current
(A)
(A)(A)
(A)
Brake Switch
Brake SwitchBrake Switch
Brake Switch
Continuous Current
Continuous CurrentContinuous Current
Continuous Current
(A)
(A)(A)
(A)
Peak Brake
Peak BrakePeak Brake
Peak Brake
Dissipation
DissipationDissipation
Dissipation
(kW/Hp)
(kW/Hp)(kW/Hp)
(kW/Hp)
Minimum Brake
Minimum BrakeMinimum Brake
Minimum Brake
Resistor Value
Resistor ValueResistor Value
Resistor Value
(
((
(
Ω
ΩΩ
Ω
)
))
)
Frame 2 : 3 Phase (IT/TN), 400V
Frame 2 : 3 Phase (IT/TN), 400VFrame 2 : 3 Phase (IT/TN), 400V
Frame 2 : 3 Phase (IT/TN), 400V
0.37/0.5 1.5 1.5 1.1/1.5 500
0.55/0.75 1.5 1.5 1.1/1.5 500
0.75/1.0 1.5 1.5 1.1/1.5 500
1.1/1.5 1.5 1.5 1.1/1.5 500
1.5/2.0 3.75 3.75 2.8/3.75 200
2.2/3.0 3.75 3.75 2.8/3.75 200
Frame 3 : 3 Phase (IT/TN), 400V
Frame 3 : 3 Phase (IT/TN), 400VFrame 3 : 3 Phase (IT/TN), 400V
Frame 3 : 3 Phase (IT/TN), 400V
3.0/4 7.5 2.3 5.6/7.5 100
4.0/5 7.5 2.3 5.6/7.5 100
5.5/7.5 13.5 4.0 10/13.4 56
7.5/10 13.5 4.0 10/13.4 56
External Brake Resistor (400V only)
All 650 units are supplied without braking resistors. The dynamic brake switch terminals
allow easy connection to an external resistor. These resistors should be mounted on a heatsink
(back panel) and covered to prevent injury from burning.
Recommended Brake Resistors
The following brake resistors are avialable from Eurotherm Drives:
Brake Resistor Value : Frame 2 : 200Ω, 100W - CZ467714; 500Ω, 60W - CZ467715
Frame 3 : 56Ω, 500W - CZ467716; 100Ω, 200W - CZ467717
Alternative Brake Resistor Selection
Brake resistor assemblies must be rated to absorb both peak braking power during deceleration and the average power
over the repeated cycles.
Peak braking power P
00055 n n
t
W
1
2
2
2
b
=
×−
.
(
)
(
)
pk
×
J
J - total inertia (kgm
2
)
n
1
- initial speed (rpm)
Average braking power P
P
t
av
pk
c
=
x t
b
n
2
- final speed (rpm)
t
b
- braking time (s)
t
c
- cycle time (s)
Obtain information on the peak power rating and the average power rating of the resistors from the resistor
manufacturer. If this information is not available, a large safety margin must be incorporated to ensure that the resistors
are not overloaded. By connecting these resistors in series and in parallel the braking capacity can be selected for the
application.
IMPORTANT:
The minimum resistance of the combination and maximum dc link voltage must be as
specified.
Resistor Derating Graph
0
20
40
60
80
100
120
0 25 50 75 100 125 150 175 200
Ambient Temp (C)
% of Rated
Power
chassis mounted
free air