Integrate safety - Siemens

SIRIUS safety relays for standstill and
speed monitoring
The SIRIUS 3TK2810-0 standstill monitor detects the standstill
status of a motor after shutdown and then enables access to
the hazardous zones. Additional sensors are not necessary.
The standstill monitor measures the induced voltage directly
at the stator winding of the motor as it runs down. When this
approaches zero, the unit recognizes the motor standstill and
then controls the release of the safety door lock, for example.
The voltage threshold U on and a subsequent delay time can be
set by the user as required.
Advantages at a glance:
■ Flexible in use – for use with a variety of motors or frequency
converters
■ Economical – no additional sensors required
■ Higher plant availability – due to faster fault diagnosis
and display on the fault LEDs
SIRIUS 3TK2810-0 standstill monitor
© Siemens AG 2011
The SIRIUS 3TK2810-1 speed monitor simultaneously
monitors three programmable limits for standstill, setup
speed and automatic speed. In addition, a complete protective
door monitoring with spring-loaded locking is integrated. The
speed monitor is suitable for all common sensors for speed
monitoring and meets all requirements according to SIL 3 or
PL e. Simple parameter assignment and continuous diagnostics
via the display enable faults to be corrected quickly at any
time, often before they lead to a plant standstill.
Advantages at a glance:
■ Speed and standstill monitoring with integrated protective
door monitoring
■ Shaft break detection
■ Universal speed encoder can be used
■ Parameter assignment via display
SIRIUS 3TK2810-1 speed monitor
SIRIUS safety relays for standstill and speed monitoring 25