Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 143

6 Infeed Modules
6.1 Description
Monitoring module
Arrangement
Operating condi-
tions
6-142
The monitoring module contains a complete electronics power supply for the
equipment bus and the central monitoring functions for a separate drive group.
The power is normally supplied from the 3–ph. 400 to 480 V AC line supply. For
emergency retraction in case of a power failure, the power supply can also be
connected to the DC link in parallel (see Section 8.15).
The monitoring module is required if a higher number of drive modules in a
group exceeds the electronics power supply of the infeed module (I/R or UI
module). The monitoring module also allows groups of drive modules to be
created in multiple cabinet compartments or tiers.
The I/R, UI and monitoring module are located as the first module at the left in
the drive group.
The mounting surface for the line supply infeed and drive modules as well as
the commutating reactors and line filter must be mounted to the mounting pan-
els through a low–resistance connection (e.g. galvanized plates and panels).
Line filters, line filter modules and shielded cables are available in order to comply
with the CE requirements regarding the radio interference voltage limit values.
Shield terminal plates are available to meet EMC requirements when using
shielded power cables.
Number of charge
operations within 8 min
Fig. 6-1 DC link pre–charging frequency
Note
In the "standby mode" of the line supply infeed, pulse inhibit for the power mod-
ules, terminal 63 should also be used to inhibit the pulses in the infeed. The DC
link remains at the non–regulated level; this means that when the pulses are
enabled, it is immediately regulated and is ready to operate.
The cycle indicated above also applies to the starting frequency of the power
supply (from the line supply or X181).
The maximum starting frequency for the power supply is five times within a five
minute period.
Notice
Failure to comply with this boundary condition triggers a thermal protection in
the device, preventing further startup of the power supply.
Consequence: All LEDs remain dark.
Remedy: Switch off the power and wait at least two minutes before switching
on the power again. For a 6–conductor connection, it is sufficient to interrupt
the power supply for two minutes at connector X181.
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
Charge limit, infeed module [μF]
v
Σ DC link capacitance of the
drive group [μF]
© Siemens AG 2012 All Rights Reserved
02.12
05.01