Dimensioning
The individual components have to be sufficiently dimensioned:
●
Value of the discharging resistor: 1000 ohm and at least 1000 W
●
The discharging resistor and the contactor contact have to withstand the
loads of practical operation (for example in the case of frequent use of the
discharging device of the occurring continuous power).
●
The contactor contact has to withstand the occurring direct voltage of a
minimum of 1000 V.
●
The contactor contact has to withstand the occurring discharge current
according to the resistance value that is used, i.e. 1 A with 1000 ohm.
Installation
Lethal electric shock caused by live parts with
more than 50 V!
WARNING
Before working on live parts: De-energize the installation and secure the power
switch against unintentional or unauthorized re-energization.
Wait at least 30 minutes after switching off the supply voltages to allow dis‐
charging.
Check whether voltages have fallen below 50 V before touching live parts!
Risk of damage by intense heat!
NOTICE
During the discharging process, the discharging resistor generates intense
heat. Therefore, place the discharging resistor as far as possible from heat-
sensitive components.
How to install the discharging device
1. Preferably install discharging device before switching on supply voltage
for the first time.
If you install discharging device after having switched on supply voltage
for the first time, wait 30 minutes to allow discharging. Check whether
voltage has fallen below 50 V before touching live parts!
2. Place discharging resistor as far as possible from heat-sensitive compo‐
nents.
Activation
Observe the following order for activating the discharging device:
1. De-energize installation and secure power switch against unintentional or
unauthorized re-energization.
2. Activate discharging device.
Bosch Rexroth AG
DOK-INDRV*-HMS02*UL***-IB03-EN-P
Rexroth IndraDrive Drive Controllers Power Sections HMS02
64/67
Appendix
