Basic Versions - Siemens SIRIUS 3TK2810-0 Equipment Manual

3.3

Basic versions

3TK2810-0 standstill monitor
The standstill monitor is the central component for safety-related standstill monitoring.
The device is supplied with voltage and signals and the detected states are output via the
terminals on the device.
The device is parameterized via the potentiometers. The LEDs show operating states, fault
messages and diagnostics.
A standstill is detected without sensors by measuring the residual magnetization.
Functional principle of the 3TK2810-0 standstill monitor
A standstill is detected by measuring the voltage induced by residual magnetization of the
coasting motor through 3 terminals connected to the stator winding.
If the induction voltage approaches 0, this means motor standstill for the device and the
output relay is activated.
To enable adaptation of the device to the most varied types of motors and applications,
the voltage threshold U
duration for which U
output circuit can also be set (standstill time t). The device also detects wire breaks between
the measurement inputs L1 / L2 / L3. If a wire break is detected, the output relay goes into
the safe position (as it does when the motor is running). This state is stored and can be
cleared by briefly bridging terminals X2 - X3. Terminals X1 - X2 are used to connect the
feedback circuit of external contactors (NC contact). If the feedback circuit is not required,
terminals X1 - X2 must be bridged; otherwise a fault will be signaled.
Versions and article numbers of the 3TK2810-0 standstill monitor
MLFB
3TK2810-0BA01
3TK2810-0BA02
3TK2810-0GA01
3TK2810-0GA02
3TK2810-0JA01
3TK2810-0JA02
3TK2810-0 standstill monitor
Equipment Manual, 08/2023, A5E50307927002A/RS-AA/001
, below which the 3TK2810-0 detects standstill, can be set. The
an
must be undershot to detect standstill definitively and enable the
an
Designation
Standstill monitor 24 V DC screw-type terminal
Standstill monitor 24 V DC spring-loaded terminal
Standstill monitor 230 V AC screw-type terminal
Standstill monitor 230 V AC spring-loaded terminal
Standstill monitor 400 V AC screw-type terminal
Standstill monitor 400 V AC spring-loaded terminal
Description
3.3 Basic versions
25