Siemens ET 757 E Series Instrucciones de operaciones Pagina 181

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ET 200pro FC
Operating Instructions, 11/2007, A5E01100763B AA
181
Glossary
Duty cycle
Electrical machines run in one of the modes of operation described below. This results in the
machine being subjected to different thermal loads during a duty cycle (S1 to S9).
S1: Continuous operation
S2: Short-time operation
S3: Intermittent operation without startup procedure
S4: Intermittent operation with startup procedure
S5: Intermittent operation with startup procedure and electrical braking
S6: Continuous operation with intermittent load
S7: Uninterrupted operation (with startup and electrical braking)
S8: Uninterrupted operation with periodic speed variations
S9: Uninterrupted operation with non-periodic load and speed variations
ET 200pro Distributed I/O System
The ET 200pro distributed I/O system is a highly modular and very flexible DP slave with
IP65 degree of protection.
The interface to the fieldbus is always provided by an IM 151 interface module.
Implementations vary from one application to the next.
Expectations
The monitoring functions in each monitoring channel work on the principle that a defined
status must prevail before each action is carried out and a specific acknowledgement must
follow each action. If these expectations of a monitoring channel are not fulfilled, the drive
coasts to a standstill (two-channel) and an appropriate message is output.
General installation guidelines
Safety-related motor starters and frequency converters can be operated in tandem
downstream of a module able to switch safe switch-off signals on the ET200 backplane bus.
The F switch supplies two switch-off signals, F0 and F1; the repair switch module F-RSM
only supplies F0.
The STARTER software can be used to assign switch-off signals at will if a different
application ID is selected for the frequency converters.
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