ABB ACH580-04 Guía Rápida De Instalación Y Puesta En Marcha página 18

18 EN – Quick installation and start-up instructions
Warning Fault
- 3130
- 3181
A3A1 3210
A3A2 3220
- 3381
- 5090
A5A0 5091
EN
A7CE 6681
A7C1 7510
DE
A7AB -
ES
FR AFF6 -
- FA81
IT
- FA82
TR
Safe torque off (STO)
￭
The drive has a Safe torque off (STO) function in accordance with IEC/EN 61800-5-2.
It can be used, for example, as the final actuator device of safety circuits that stop
the drive in case of danger (such as an emergency stop circuit).
When activated, the STO function disables the control voltage of the power
semiconductors of the drive output stage, thus preventing the drive from generating
the torque required to rotate the motor. The control program generates an indication
as defined by parameter 31.22. If the motor is running when STO is activated, it coasts
to a stop. Closing the activation switch deactivates STO. Any faults generated must
be reset before restarting.
The STO function has a redundant architecture, that is, both channels must be used
in the safety function implementation. The safety data given is calculated for redundant
use, and does not apply if both channels are not used.
The Safe torque off function does not disconnect the voltage of the main and
auxiliary circuits from the drive. Therefore maintenance work on electrical parts
of the drive or the motor can only be carried out after isolating the drive from
the main supply.
Note:
• If stopping by coasting is not acceptable, stop the drive and machinery using the
appropriate stop mode before activating STO.
• The STO function overrides all other functions of the drive.
Wiring
The safety contacts must open/close within 200 ms of each other.
Aux. code Description
Input phase loss The intermediate DC circuit voltage oscillates due to missing
input power line phase.
Wiring or earth fault Incorrect input and motor cable connection.
DC link overvoltage Intermediate DC circuit voltage is too high.
DC link under- Intermediate DC circuit voltage is too low.
voltage
Output phase loss All three phases are not connected to the motor.
STO hardware fail- STO hardware diagnostics has detected hardware failure.
ure Contact ABB.
Safe torque off The Safe torque off (STO) function is active.
EFB comm loss Break in embedded fieldbus communication.
FBA A communica- Communication lost between drive (or PLC) and fieldbus ad-
tion apter.
Extension I/O con- The I/O extension module types and locations specified by
figuration failure parameters do not match the detected configuration.
Identification run The motor ID run occurs at the next start.
Safe torque off 1 The Safe torque off circuit 1 is broken.
loss
Safe torque off 2 The Safe torque off circuit 2 is broken.
loss