9
05.01
9.3 Axis expansion using the monitoring module
9-235
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
9.3.3 Description of the interfaces and functions
The electronics power supply, included in the NE module, supplies the drive
modules, connected through the equipment bus, as well as for the digital 611
digital drive groups, also the SINUMERIK 840D and 810D controls integrated in
the group.
The number of modules which can be connected is limited. The power of the
modules which can be connected is determined by adding assessment factors
in the electronics area (EP) and gating area (AP). If the power requirement ex-
ceeds the NE module power supply rating, then the drive group must be expan-
ded by one or several monitoring modules. This means that the complete
system has two or several independent electronic systems.
The charge limit of the DC link should also be observed.
Reference: /NC60/ SIMODRIVE 611, Catalog NC 60
Enable signals or fault signals only act on the axes connected together on the
common equipment bus. The equipment bus is interrupted between the last
axis after the NE module and the monitoring module.
S Connection example, power supply (standard) ––> refer to Fig. 9-5.
The connection example indicates the three–phase connection of the moni-
toring modules after the power connection of the NE module via fused termi-
nals.
Alternatively, the monitoring module power supply can also be provided
through terminals P500/M500 at the power DC link P600/M600. In this case,
it should be taken into account that a max. 2 monitoring modules, limited by
the DC link pre–charging circuit in the NE module, may be connected to the
associated axes. It should be observed, that after the line contactor has
opened, the DC link voltage decreases which means that the power supply/
communications to the drive modules is interrupted.
S Connection example, pulse enable ––> refer to Section 9.3.2
The axes, connected after the monitoring module, may only be enabled if
the NE module signals ready/fault signal, i.e. the power DC link is charged
and the internal line contactor is closed. Any fault signals at the NE module
must act, either instantaneously or delayed, interlocked with the pulse ena-
ble terminal 63 of the monitoring module and the associated axes.
S Instantaneous pulse enable withdrawal ––> refer to Fig. 9-6
The ready/fault signal at terminal 72–73.1 of the NE module acts directly on
pulse enable terminal 63 at the monitoring module. If there is a line supply
fault or a fault signal, the ready signal is withdrawn at the NE module which
means that the pulses of the drives after the monitoring module are cancel-
led after the drop–out delay time of the ready relay, and the drives coast
down.
This interlocking cannot, e.g., be used for the line supply failure concept and
also for other applications where it has a disadvantage with respect to a
delayed shutdown.
General
information
Examples
9 Important Circuit Information
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