And Pr Module; Engineering Information Is Applicable For Ui 5 Kw, 10 Kw, 28 Kw And Pr Module - Siemens Simodrive 611 Configuration Manual

02.07
05.01
6.7.4 Engineering information is applicable for UI 5 kW, 10 kW, 28 kW

and PR module

Sizing the load duty cycles with pulsed resistors
E [Ws]
T [s]
A [s]
J [kgm
M [Nm]
n [RPM]
Pn [W]
P
E
Load duty cycles
for braking
P (kW)
operations
Fig. 6-26
Table 6-26 Examples
Values
E
max
Pn
P
max
Example
A =
T =
A =
T =
1) As a result of the mechanical dimensions, the resistor can absorb a relatively high level of energy.
The following conditions must be fulfilled:
1. P
2. E
3. P
© Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
Regenerative feedback energy when braking a motor from n
to n
1
Period of the braking load duty cycle
Load duration
2
] Total moment of inertia (including J motor)
Braking torque
Speed
Continuous power rating of the pulsed resistor
[W] Peak power of the pulsed resistor
max
[Ws] Energy of the pulsed resistor for a single braking operation
max
P
max
P
n
0 kW
A
T
Load duty cycle for internal and external pulsed resistors
PR 0.2/10 kW
13500 Ws
200 W
10000 W
0.2 s
10 s
1.35 s
67.5 s
w M S 2 S π S n/60
max
w E; E=J S [(2 S π S n
max 2
w E/T
n
6.7 DC link options
0 kW
t (s)
A
PR 0.3/25 kW
1)
7500 Ws
300 W
25000 W
0.12 s
10 s
0.3 s
25 s
–(2 S π S n
2 2
/60) /60) ]/2
1
6 Infeed Modules
2
PR 1.5/25 kW
180000Ws
1500 W
25000 W
0.6 s
10 s
7.2 s
120 s
J
6-197
6