Danfoss VLT Series Programming Manual page 224

Programming
Enable Input. Therefore, the general rules for the Enable
input do not apply here. This function block is implicitly
enabled. The Enable input of this function block controls
the DC-link voltage on the output lines of the SAB. All
outputs are always updated (so Valid can be TRUE, even if
Enable is FALSE).
The input TimeLimit represents the maximal duration of
functionality. If the TimeLimit is exceeded during switching
on the SAB, an Error is signaled at the outputs. However,
the functionality according to the Enable input is
continued. If Enable is TRUE, the function block continues
to attempt to enable the DC-link voltage of the SAB. If
Enable is FALSE, the function block continues to attempt to
disable the DC-link voltage of the SAB. If the SAB starts
6 6
reacting again, the Error output can change to FALSE again
without a new rising edge of Enable. Set the value to 0 to
disable the time limit functionality.
The command is transferred immediately, but it can take
some time until the SAB has enabled the DC-link voltage
and the output Status becomes TRUE.
6.5.8.3 DD_Reset_SAB
This function block makes the transition from the state
Fault to Standby by resetting all internal SAB-related errors.
It does not affect the output of the function block
instances.
The command is transferred and executed immediately.
SAB_REF
BOOL
Illustration 6.86 DD_Reset_SAB
222
VLT
DD_Reset_SAB
Sab
Execute Done
Busy
Error
ErrorInfo
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®
Integrated Servo Drive ISD
Variable
name
VAR_IN_OUT
Sab
VAR_INPUT
Execute
VAR_OUTPUT
Done
Busy
Error
ErrorInfo
Table 6.72 DD_Reset_SAB
6.5.8.4 DD_ReadSabInfo_SAB
This function block returns detailed information about the
SAB.
The output data is available immediately.
SAB_REF
BOOL
BOOL
BOOL
BOOL
DD_ERROR_ISD51x
Illustration 6.87 DD_ReadSabInfo_SAB
Variable
name
VAR_IN_OUT
Sab
VAR_INPUT
Enable
VAR_OUTPUT
Valid
®
510 System
Data Default Description
type value
SAB_REF Reference to the SAB.
See chapter 6.5.8.1 SAB_REF.
BOOL FALSE Resets all internal SAB-related
errors.
BOOL Standby state is reached
BOOL The function block is not
finished and new output values
are to be expected.
BOOL An error has occurred within
the function block.
DD_ERROR_ISD51x Error identification and instance
identifier.
See chapter 6.5.2.3 Error
Indication.
DD_ReadSabInfo_SAB
Sab
Enable Valid
Busy
Error
ErrorInfo
CommunicationReady
ReadyForPowerOn
PowerOn
SabWarning
SabError
Data Default Description
type value
SAB_REF Reference to the SAB.
See chapter 6.5.8.1 SAB_REF.
BOOL FALSE Get the SAB information
continuously while enabled.
BOOL The function block has a valid
set of outputs.
BOOL
BOOL
BOOL
DD_ERROR_ISD51x
BOOL
BOOL
BOOL
BOOL
BOOL
MG36D102