ABB ACS 800 Series, Firmware Manual

Page: 199 / 340

Actual signals and parameters
199
42.11 MOTOR SLIP SPD Defines the motor slip speed allowed during brake opening. If the motor speed
exceeds this level during brake opening, a brake slip fault will be generated.
This function performs a mechanical system check of the brake during the
Torque proving sequence, ensuring that the brake does not slip during the
Torque proving sequence with the brake closed. Not applicable in Scalar
mode.
0 … 100 rpm Speed (an absolute value) 0 …1000
42.12 SLIP FAULT DELAY Defines the motor slip time delay during brake opening. If the motor speed
exceeds the slip speed during brake opening, BRAKE SLIP FAULT will be
generated. Not applicable in Scalar mode.
0 … 60 s Time 0 …6000
42.13 BRK LONG FLT DLY Defines the time delay for generating a brake fault after the brake close delay
has elapsed. This parameter is applicable only when encoder feedback is used
and brake acknowledge DI is used. During the brake close delay, the drive
checks whether the brake has physically closed by checking the status of the
brake acknowledge DI. If the DI is still active after the brake close delay, the
drive keeps the torque ON to the motor for the time defined. If the brake long
fault delay time has elapsed and the DI is still active, the drive trips on a brake
fault. A status bit (
03.32 bit 9) is available when the drive is operating at the
brake long fault delay period along with a CDP message ‘BRK LONG TIME’,
which can be used for safety interlock or generating alarms.
0 … 60 s Time 0 …6000
42.14 SAFETY CLOSE
CMD Activates the Safety close function. This function monitors the actual speed of
the motor when the drive is running without the encoder. When the actual
speed is below 1% of the max speed for more than 2 seconds with the Start
command active, the drive trips on SAFETYCLS FLT.
DISABLE Function is inactive 1
ENABLE Function is active 2
42.15 BRAKE ACKN PTR Defines the source or constant for value PAR 42.15 of parameter 42.02
-255.255.31 …
+255.255.31 / C.-
32768 … C.32767 Parameter index or a constant value. See parameter 10.04 for information on
the difference.
-
42.16 BRK REOPEN DLY Defines the brake reopen delay time after a Stop command is issued. The
brake is opened only after this time period after brake closing sequence is over
with a Stop command. This function helps in improper brake opening and
closing sequence due to immediate Start -> Stop -> Start sequence.
0 … 5 s Time 0 …500
Index Name/Selection Description FbEq