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Installation site altitude
Surrounding air
temperature
Relative humidity
Contamination
Shock
IEC 60068-2-27:2008,
EN 60068-2-27:2009
Free fall
Safe torque off (STO)
The drive has a Safe torque off function (STO) 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 Safe torque off is activated, it
coasts to a stop. Closing the activation switch deactivates the 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.
WARNING! The STO function does not disconnect the voltage from the main and
auxiliary circuits of the drive.
Notes:
•
If stopping by coasting is not acceptable, stop the drive and machinery using the
appropriate stop mode before activating the STO.
•
The STO function overrides all other functions of the drive.
Wiring
For the electrical specifications of the STO connection, see the technical data of the control
unit.
Operation
installed for stationary use
in the protective package
For TN and TT neutral-
grounded network systems
and IT ungrounded
network systems:
0 to 4000 m (13123 ft)
above sea level
-15...+55 °C (5...131 °F).
No frost allowed.
5...95%
No condensation allowed. Maximum allowed relative humidity is 60% in the
presence of corrosive gases.
IEC/EN 60721-3-3:2002
Not allowed
100 m/s
100 mm (4 in) for weight
Not allowed
Technical data and references 99
Storage
in the protective package
-
-40...+70 °C
(-40...+158 °F)
Max. 95%
IEC 60721-3-1:1997
IEC 60721-3-2:1997
With packing max.
2
2
(330 ft/s
), 11 ms 100 m/s
100 mm (4 in) for weight
over 100 kg (220 lb)
over 100 kg (220 lb)
Transportation
-
-40...+70 °C
(-40...+158 °F)
Max. 95%
With packing max.
2
2
(330 ft/s
), 11 ms
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