Two–Tier Unit Arrangement - Siemens SIMODRIVE 611 Planning Manual

10 Cabinet Design and EMC
10.1 Installation and connection regulations
10.1.3
10
10-310
Two–tier unit arrangement
If space is restricted, the SIMODRIVE 611 drive converter system modules can
be arranged in two tiers one above the other.
The distance between the tiers may not be less than 200 mm. The maximum
clearance is obtained depending on the arrangement as a result of the equip-
ment bus cable.
When arranging the wiring ducts which may be required for the wiring, it should
be ensured that the necessary minimum clearance to the SIMODRIVE 611 drive
converter system is not fallen below.
Larger modules and the infeed module must be located in the upper tier.
For a two–tier arrangement for the SIMODRIVE 611 drive converter system, a
connecting cable is required for the equipment bus. For the digital SIMODRIVE
611 drive group, in addition, a connecting cable is required for the drive bus.
For two–tier arrangements, a parallel cable should be used to connect the
DC link (max. length 5 m). For subsequently connected modules, 300 mm wide,
the copper conductor cross–section must be 70 mm
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50 mm . The cable must be routed so that it is short–circuit proof and ground
fault proof. A potential bonding conductor having the same cross–section must
be used and connected to the housing of the two modules which are connec-
ted. The three conductors should be bundled. DC link adapter terminals are
available to connect the DC link.
The maximum expansion of a drive group is limited by the rating of the infeed
module. Only one equipment bus extension is permissible: Either to the left,
e.g. for a second tier or to the right, e.g. to bypass a cabinet panel.
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and for smaller modules,
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01