Recovery From Safe State; Recovery From Safe Function Triggered Normally; Recovery From Safety Events - Danfoss VLT FC 280 Operating Manual

Operating Guide | VLT® Midi Drive FC 280

Recovery from Safe State

6.2.5
6.2.5.1

Recovery from Safe Function Triggered Normally

Restart behavior of safe digital input
When safe function is achieved by the safe digital input (terminals 37 and 38), the reset action to restart the motor depends on the
configuration of restart behavior. Parameter 42-24 Restart Behavior determines whether the drive restarts automatically or waits for a
manual reset after the safety function is achieved.
Automatic reset: when the safety function is achieved, the safety option can run again when the condition that triggered the safety
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function ceases. This behavior is only valid for the digital input where this reset behavior is defined. For example, if there is an
external fault, a manual reset from the reset source is required regardless of the setting in parameter 42-24 Restart Behavior.
Manual reset: when the safety function is achieved, the drive requires a reset from a reset source before it can run again. The reset
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source could be the following (refer to
options):
The [Reset] key on the LCP.
¢
A specified non-safe digital input.
¢
The reset command via fieldbus other than PROFIsafe (for example RS485, PROFINET).
¢
Restart behavior of safe fieldbus
Make sure that the surrounding environment is safe before recovering from safe state.
The drive resets automatically when inactive command received from the host device via safety fieldbus protocol.

Recovery from Safety Events

6.2.5.2
Table 24: Recovery from Safety Events
Safety event Safety event
index
1 Customization requested
2 Customization aborted
3 Customization completed
4 General reset
5 Internal failures
6 External failures
7 SFBC initialized (power up without fail-
ure)
8 Safe function pending (refer to Restart
behavior of safe digital input section in
6.2.5.1 Recovery from Safe Function Trig-
gered Normally)
10 In self-test
11 Safe fieldbus acknowledgment re-
quested
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6.12 Safety-related Parameters
NOTICE
User action required when safe
fieldbus is disabled
–
Manual reset
Manual reset
Manual reset
Power cycle
Manual reset
Manual reset
Manual reset
–
–
for more information on parameter 42-31 Reset Source and its
AQ381425076031en-000201 / 130R1223 |
Safety Functions
User action required when
safe fieldbus is enabled
–
–
–
–
Power cycle
Manual reset
–
Manual reset
–
–
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