Siemens SIMODRIVE 611 digital - Overvoltage Limiter Module

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2.7 Infeed modules
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© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) -- 05/2008 Edition
2.7.4 Overvoltage limiter module
The overvoltage limiter module limits sporadic, transient overvoltages that occur
as a result of, e.g. switching operations at inductive loads and at line supply
matching transformers to acceptable values.
For line supply infeed modules 10 kW and above (100 mm wide), the overvol-
tage limiter module can be plugged into the X181 interface.
The overvoltage limiter module is used for upstream transformers or for (insta-
ble) line supplies that are not IEC compliant or line supplies where there are
frequent switching operations, e.g. where larger motors are involved (above
approx. 30 kW).
An appropriate protective circuit is already integrated as standard in the 5 kW
UI module.
Note
It is absolutely necessary to use the overvoltage limiting module:
S For line supplies in which higher power loads are directly connected
(depending on the line supply stiffness and extent of the line supply, already
necessary from 20 kW and above), and if
S Line supplies, that do not reliably fulfill the line supply specifications
according to IEC--/EN 61000--2--4.
Table 2-4 Technical specifications
Max. energy absorption
100 Joule
Weight approx. 0.3 kg
Dimensions (H x W x D) 76 mm x 70 mm x 32.5 mm
Power module depth with overvoltage limiter module 325 mm
Order number 6SN11 11--0AB00--0AA0
The following operating conditions apply:
S A voltage limiter must be used when transformers are used in front of the NE
module.
S This limits the voltage for overvoltage condition caused by switching opera-
tions, when the line supply frequently fails, for arcing etc.
S Plants and systems that are to fulfill UL/CSA requirements must be
equipped with overvoltage limiter modules.
1. Disconnect the equipment from the power source and ensure that it is in a
no--voltage condition.
2. Withdraw connector X181 from the NE module.
3. Insert the overvoltage limiter module into connector X181 up to its endstop.
4. Insert connector X181 onto the overvoltage limiter module.
Application
Rated conditions
Assembly
10.0411.0512.06
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