Baumuller b maXX 5000 BM5800 Series, Инструкция по эксплуатации

Страница: 112 / 176

STO function option
Instruction handbook b maXX 5800
Document No. 5.16027.04 Baumüller Nürnberg GmbH
112
of 174
8.1
The STO function of the axis module with type code -XXXX 1 X-

complies with the following safety levels and standards:
m Characteristic data according IEC 61508-1 to 7 and IEC 62061

(data for use of the device as a subsystem in safety functions)
n Safety Integrity Level SIL CL 3
n PFH: 3.6 x 10
-10
1/h, corresponds to 0.4 % of SIL 3
n PFD
av
: 3.2 x 10
-5
corresponds to 3.2 % of SIL 3
n Proof Test Interval 20 a
Remark: At a PFH value, which is < 1 % of the allowed SIL-threshold, the perfor-
mance of special Proof Tests within the mission time of the product is re-
garded as not necessary.
m Characteristic data according EN ISO 13849-1
n Performance Level PL e
n Category: Cat 4
n MTTFd: High (751 a)
n Diagnostic Coverage: High (99 %)
For further information call our application department.
8.1.3 Function
In case of a failure or on request (by activating an emergency stop device, interrupting a
safety light curtain), the STO function ensures that the power supply of the converter in
the power stage is shut down safely and the pulse inhibitor is activated. Thus, the motor
can no longer generate a rotating field. The power supply is not disconnected from the
motor when the shut down function is activated.
The safety relay function is based on the fail-safe principle. The safety function STO „safe
torque off“ is active, as long as there is no voltage at the input terminals (X1-1, X1-2, X1-
3). Therefore, the functioning of the safety function is ensured at voltage failure, also. In
order to deactivate „safe torque off“, a voltage of 24 V must be applied to the terminals
(X1-1, X1-2, X1-3).
An internal short circuit detection is provided by the STO function: If the STO requirement
is made by a single channel, only (STO_A or STO_B) then the device remains in the STO
status and cannot be enabled anymore. If voltage is on both channels simultaneously
then the axis can be enabled again after re-applying 24 V to both channels.
The error „Shut down because of safety function“, error No. 1013 is generated if the

b maXX 5800 is in state „ Operation enabled “ and the voltage on the input of the STO
function (X1-1, X1-2, X1-3) is switched off.
The warning „Safety function“, warning No. 1046 is generated if the b maXX 5800 is in
another state except „Operation enabled“ and the voltage on the input of the STO func-
tion switched off. The warning will be reseted as soon as the voltage is available again.