Operation; Times - Siemens 3TK2810-1 System Manual

Operation

6.1

Times

Start override time t
a
The start override time is used, for example, to bridge the start time of a motor until it has
reached a specific speed. If the parameterized min. setup or automatic speed is not reached
within the parameterized start override time t
state. Contacts 23/24 are opened and signaling output 25 switches off.
The start override executes at restart of the device, when changing from setup to automatic
mode in autostart mode, and in manual start mode every time the on pushbutton is pressed.
However, the requirement for this is always that before starting the start override time, all
safety requirements (position switch, magnet switch, feedback circuit) must be satisfied, with
the exception of the speed. During start override, output contact 23/24 is permanently
connected provided the safety requirements such as position switch and magnet switch
continue to be satisfied.
See also Chapter "Terminals and their functions (Page 23)" in this regard.
Release delay time t
v
The release delay time is the time that elapses until output contacts 13/14 and signaling
contact 15 are switched through following a detected standstill.
See also Chapter "Terminals and their functions (Page 23)" in this regard.
Switch-off monitoring time t
The switch-off monitoring time is used to check the contactors connected to output
contacts 23/24. If the feedback at RF1 is not available within the parameterized switch-off
monitoring time t
signaling output 25. An error message is also displayed.
After correction of the fault, it is necessary to perform a reset (see Chapter "Troubleshooting
(Page 55)") or a restart by switching the supply voltage off and on.
3TK2810-1 safety-related speed monitor
System Manual, 01/2011, 926246402000 DS 02
f
after switching off output 23/24, a blink code in the ratio 50/50 is output at
f
, the device switches immediately to the safe
a
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