Technical Specifications
9-7
650V AC Drive
Internal Dynamic Braking Circuit
The dynamic braking circuit is intended for with short term stopping or braking.
Motor Power
(kW/Hp)
Brake Switch
Peak Current
(A)
Brake Switch
Continuous Current
(A)
Peak Brake
Dissipation
(kW/Hp)
Minimum Brake
Resistor Value
(
Ω
)
Frame 2 : 3 Phase (IT/TN), 400V, 100% duty DC link brake voltage : 750V
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 : 1 Phase (IT/TN), 230V, 100% duty
2.2/3.0 7.0
7.0
2.72
56
Frame 3 : 3 Phase (IT/TN), 230V, 100% duty DC link brake voltage : 390V
2.2/3.0 7.0
7.0
2.72
56
3.0/4 10.8 10.8
4.23
36
4.0/5 14.0 14.0
5.44
28
Frame 3 : 3 Phase (IT/TN), 400V, 30% duty DC link brake voltage : 750V
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
All 650V units are supplied without braking resistors. The dynamic brake switch terminals
(where fitted) 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 available from Parker SSD Drives:
Brake Resistor Value :
Frame 2 :
200
Ω
, 100W - CZ467714; 500
Ω
, 60W - CZ467715
Frame
3
:
28
Ω
, 500W (2 x 56
Ω
in parallel) - CZ467716; 36
Ω
, 500W - CZ388396;
56
Ω
, 500W - CZ467716; 100
Ω
, 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
0 0055
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
Lefflersgatan 1, SE-754 50 Uppsala, SWEDEN
+46 (0)18-65 70 00
+46 (0)18-10 74 78 [email protected] www.regal.se
