ABB ACS880-01 Series, Инструкция по применению, Страница: 30 / 46

Description Example value Name Index
Sets the time that is needed to coast the motor to a
standstill from maximum process speed. If this time is
not known, it can be measured with Drive composer
pro PC tool when an encoder is used for motor control
(otherwise you have to make sure that the motor shaft
has stopped rotating by other means, eg, visually). 2000 ms Time to zero speed
with STO and modoff STO.14
Acknowledgement is allowed after coast stop in the
STO, SSE and SS1 functions (when SBC is not used).
If the drive STO is activated or modulation stopped
while a monitoring safety function is indicating “unsafe”,
after this time acknowledgement is allowed. For ex-
ample, if the drive modulation is lost during SLS decel-
eration ramp, SLS OK will be indicated after this time
has elapsed.
STO function: This parameter sets the time after which
the STO function is completed and the STO completed
indication goes on. Parameter
STO.13 defines the time
after which the acknowledgement is allowed. Adjust
the value according to application requirements.
SS1 function: This parameter is used only when the
motor speed does not follow the ramp settings or the
time monitoring limit is exceeded and the FSO module
activates the STO function. Adjust the value according
to application requirements.
When an encoder is used: This parameter is relevant
only if there is an encoder failure and the FSO module
activates the STO function.
SBC usage
Sets how the mechanical brake is used together with
the STO function. None STO SBC usage SBC.11
In the safety functions described in this manual, this
feature is not used and this parameter has value
None .
I/O settings
Sets the diagnostic pulse of digital input X113:1 on or
off. On: The input monitors that it receives test pulses.
On
1)
DI X113:1 diag pulse
on/off SAFEIO.33
In this example (see section Connection diagram (two-
channel connection) (page 21) ), the STO/SS1 request
is connected to this digital input.
Sets the diagnostic pulse of digital input X114:1 on or
off. On: The input monitors that it receives test pulses.
On
1)
DI X114:1 diag pulse
on/off SAFEIO.37
In this example (see section Connection diagram (two-
channel connection) (page 21) ), the STO/SS1 request
is connected to this digital input.
1) The safety data in this manual is based on the assumption that this diagnostic measure for the wiring is active (On). If
pulsing is disabled, you must consider other measures to ensure sufficient diagnostic coverage of the failures in wiring.
30 Parameter settings