Siemens SIMODRIVE 611 Planning Manual page 196

6 Infeed Modules
6.6 DC link options
Charging times,
discharging times,
discharge voltage
6
6-196
It should be checked that the DC link is in a no–voltage condition before
carrying out any commissioning or service work.
Table 6-15
Capacitor mo-
dule
4.1 mF
20 mF
If the system has a pulsed resistor, the DC link can be quickly discharged via
terminals X221:19 and 50 (jumpers) after opening terminal 48 to reduce the
discharge time.
Warning
!
The pulsed resistor modules can only convert a specific amount of energy into
heat (refer to Table 6-17). The energy available to be converted depends on
the voltage.
Caution
In order to prevent damage to the infeed circuit of the NE modules, when ener-
gizing terminal X221, terminal 19/50, it should be absolutely guaranteed that
terminal 48 of the NE module is de–energized (electrically isolated from the line
supply).
The checkback signal contacts of the NE module main contactor must be
evaluated to ensure that this has dropped–out (X161 terminal 111, terminal 113,
terminal 213).
Charging/discharging times, discharge voltage
Charging time Discharging time for each module to 60 V of
for each module the DC link voltage at 750 V DC
As for the power Approx. 30 min
modules
Approx. 2 min Approx. 40 min
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01
 Siemens AG 2001 All rights reserved