Standard functions
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
10-15
10.6 Power failure monitoring (UVO)
Description
The "Power Failure Monitoring (UVO)" function block is activated via the
plug. This is carried out via an external voltage relay that is connected to the
function block via the binary inputs of SIMOCODE pro.
Process (see process diagram below).
1) All contactors (QE) are immediately deactivated after response by the
monitoring relay/activation of the input (UVO).
2) The motor will be switched back to its previous status if the voltage returns
within the "power failure time". This can either take place immediately or can
be additionally delayed (restart time delay).
3) If the "power failure time" expires before the voltage returns, the device
signals a fault (UVO fault):
Prerequisite: The SIMOCODE pro control voltage is buffered and not
interrupted.
Schematic
The following schematic shows the "Power Failure Monitoring (UVO)"
function block
Fig. 10-6: Schematic of the "Power Failure Monitoring (UVO)" function block
Fig. 10-7: Power failure monitoring (UVO) process diagram
Input*
Trip -
Power failure (UVO)
UVO
Type
Power failure time
*Activation
External power failure monitoring
Restart time delay
QE
t
Power failure
time
Power failure
time
UVO
t
Fault
t
Fault
1)
2)
3)
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