Siemens SINAMICS G220 - Safety Message Buffer

15.9 Safety message bu󹪜er
Overview
The converter stores a limited number of safety messages in a safety message bu󹪜er. As a
consequence, acknowledged messages are kept for diagnostic purposes.
Description of function
A safety message includes message code, message value and 2 message times. The associated
parameters are shown in the following diagram.
In the delivery state (p3117=0), safety messages have message type "C" and the safety
message bu󹪜er is active. With p3117=1, safety messages are assigned message types Alarm
(A) or Fault (F) and are stored in the fault bu󹪜er or the alarm bu󹪜er.
The message code and the message value describe the message cause. The message value
provides additional and more detailed information about the safety message. The message
times indicate when the message occurred and when the message was resolved.
Safety message bu󹪜er
The entry into the safety message bu󹪜er takes place with a delay. Reading out the safety
message bu󹪜er only makes sense when the converter signals "Safety message active"
(r2139.5) and detects a changed safety message bu󹪜er (r60044).
The converter stores up to 8 message cases in the safety message bu󹪜er. The safety message
bu󹪜er comprises the current message case and the message history.
The safety message bu󹪜er is kept when the converter supply voltage is switched o󹪜.
The current message case before the supply voltage is switched o󹪜 is acknowledged when
the supply voltage is switched on again, and it is then in the message history.
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Figure15-9 Structure of the safety message bu󹪜er
System messages
15.9Safety message bu󹪜er
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 753