BMR SFU 0303, Руководство пользователя

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Functional description
- STO is activated
:
If both control inputs STO-A and STO-B are not connected or are at 0 volts or the supply voltage of the
STO logic is missing, the STO function is activated and the output stage is switched off.
power stage is switched off LED3 and LED6 = ON
- STO is deactivated
If both control inputs STO-A and STO-B are connected with +24V, the STO function is deactivated and
the output stage is enabled.
- STO Error
In both cases, it must be noted that both inputs must be connected synchronously, within a certain
discrepancy time with the same levels. If the levels of the two channels are not equal, this is
interpreted as an error and leads to an error message and shutdown of the inverter. The STO function
is permanently activated and the inverter is set to the blocking state and the power stage is switched
off.
power stage is switched off LED1 and LED4 = ON / LED 3 and LED6 are flashing. The inverter can only
be unlocked by switching the mains voltage off and on again.
Control inputs STO-A and STO-B
STO channels 1 and 2 and the feedback contact are galvanically isolated from each other and from all
other inputs and outputs
The STO inputs tolerate voltages with levels of ±60-V and have reverse polarity protection that meets
the characteristics of IEC 61131-2 types 1, 2 and 3.
Level STO-A/B 0…5V = low 5,1V…..14,9V 15…30V (max.
60V) =high
StateSTO STO active not defined STO inactive
Inverter disabled
and locked
not defined Inverter enabled
and ready for
operation
Relay open not defined closed
Discrepancy time t
Dis
According to the specification of the safety function STO, both levels must always be identical,
otherwise the inverter is set to the disabled state and can only be unlocked by switching the mains
voltage off and on again.
At the same time, an error message is output on the display ("STO Error" ) and the LEDs.
The microcontroller of the inverter monitors the evaluation of the two inputs STO-A and STO-B for
synchronicity and equality.
The software tolerates a certain discrepancy time in which the inputs can be different, this can be
caused e.g. by bouncing of contacts.
→ Discrepancy time: 100 msec.