22.9 Auto / manual toggle input

Connect a remote switch between the +5V terminal and the i/p terminal of the Auto-man i/p connector (J1). Closed switch for automatic control; open switch for man- ual control. Alternatively a logic input may be applied to the i/p terminal of the Auto-man i/p connector, ground to the 0V terminal. High input for automatic control; low input for manual control.

22.10 MemoDose input

Connect a momentary contact switch such as a footswitch or a handswitch between the 5V terminal and the i/p ter- minal of the Dose i/p connector (J3). Close the switch to begin a dose. This input is software-debounced and func- tions in a similar way to the other remote inputs, such as with 5V to 24V logic as shown above, using the i/p ter- minal and the 0V terminal. Note: This input is software- debounced, so the signal can be either momentary or maintained during the dose. If maintained, the signal must be removed before the next dose.

22.11 Leak detection input

Connect a remote leak-detection device between the +12V terminal and the i/p terminal on the Tube monitor connec- tor (J9). Closed circuit indicates a leak. Alternatively a logic input may be applied to the i/p terminal, ground to the 0V terminal. High input indicates a leak. Connect the cable of a Watson-Marlow Tube monitor leak detector as follows:

Tube monitor

520N module

wire colour

 

 

Blue

J9

0V terminal

Yellow

J9

i/p terminal

Red

J9

+12V terminal

 

 

 

Terminate the screen in the 520N module with a 360° EMC gland if required. See 22.2 Wiring up.

Note: Use only Watson-Marlow 520 series tube monitors.

Watson-Marlow 520DuN IP66/NEMA 4X User Manual

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Watson & Sons 520DUN user manual Auto / manual toggle input, MemoDose input, Leak detection input

520DUN specifications

Watson & Sons 520DUN is a state-of-the-art model that has garnered attention for its exceptional performance and innovative technologies. Designed for agricultural applications, this machine combines durability, efficiency, and ease of use, catering to the needs of modern farmers.

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In summary, the Watson & Sons 520DUN represents the pinnacle of agricultural machinery with its powerful engine, remarkable load capacity, precision technology, and ergonomic design. It is tailored for those who seek reliability and efficiency in their agricultural endeavors, making it a noteworthy choice in today's competitive market.