IM-P343-22 CH Issue 2
18
TS2 - software configured travel switch 2 (normally closed)
Programming notes
Software configured travel switches are optional with the SP2 positioner. The
switching point can be set as a percentage of the valve travel between 0 to 100%.
A value can be set outside the limits of the travel settings (MIN-T) and (MAX-T).
Initially OFF will be displayed indicating that the switch is not set. To set a
switching point press s and t keys to alter the displayed value. Press
key to accept the displayed value and return to TUNE in the main menu.
Commissioning notes
Travel switch 2 (TS2) is normally closed. External wiring should be made between terminals
3 (+) and 4 (-). The value set is a % of valve travel. At the set value the switch will open.If
the options PCB is fitted and the slide switch SW1 set to position 'A' the staus of the
switch will be shown on the LCD (refer to Fig. 21).
Software configured travel switches can be used to remotely indicate valve position or to
operate warning devices, fans, stirrers, motors or other process equipment via a secondary
switching device.
Note: If the switch is in its 'off' status it will be an open circuit.
Fig. 21 TS2 Travel switch 2 (normally closed)
Switch
open
Switch
closed
Travel
100%
0%
50%
Signal
Note:
Software configured travel
switches can be set within
the range 0% to 100% of full
travel irrespective of any
travel limit settings.
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