Position Measuring System; Setting The Position Measuring System (Teach-In) - Pentair SUDMO IntelliTop 2.0 Operating Instructions Manual

Position Measuring System

16. POSITION MEASURING SYSTEM
Operating principle of the position measuring system
The position measurement is based on recording the change in position of the ferromagnetic target inside the
system. The geometry and the material of the target to be used are synchronized with the sensitivity of the system.
The measurement precision is determined by the ferromagnetic properties of the target and all other parts in the
system. Ideally materials are used which do not have any ferromagnetic properties.
The switching positions of the process valves are reported to the actuator by feedback signals from the sol-
derless position measuring system. Connection to the control head is done by means of a simple adaptation to
the process valve's piston.
Stroke range / feedback signals / teach-in function
The recordable stroke range is between 0 ... 85 mm.
3 discrete feedback signal are evaluated:
- Position 1 (discrete S1OUT signal)
- Position 2 (discrete S2OUT signal)
- Position 3 (discrete S3OUT signal)
3 Teach-In buttons have been provided for comparison with the actual stroke range (see Chapter "16.1. Setting
the position measuring system (Teach-In)"). The switching positions for the position measuring system can be
determined with these Teach-In buttons or by means of the PC software (connection via the Service interface on
the electronics module).
A discrete, external feedback signal (standard proximity switch) can also be processed (S4IN, S4OUT).
If an explosive atmosphere is present the housing must not be opened when voltage is present!
For detailed description on electrical installation - see
Chapter "10. 24 V DC - Design" or
Chapter "11. AS Interface - Design" or
Chapter "12. DeviceNet Design" or
Chapter "13. 120 V AC Design".
16.1.

Setting the position measuring system (Teach-In)

DANGER!
Danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!
• Opening the hood or the housing in an explosive atmosphere is only allowed in a not energized state!
Example procedure (for 3 valve positions):
→
Open the housing following the instructions in Chapter "8. Opening and Closing the Housing".
→
Supply electrical power so that the position measuring system and the LED display can function.
→
Position the process valve at the lower switching position.
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