Watson & Sons 520DUN user manual PIN-secure process protection

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16 PIN-secure process protection

The 520DuN and 520Du feature PIN-secure process protection. This allows the pump to be configured to suit the application, and for the setup to be protected by two levels of PIN code. See 18.19 Security code setup.

Menu option	With Main	With User	Code set and
or keypress	code set	code set	keypad locked
Menu
	Available	Available	Not available
Calibrate	Available	Available	Not available
Accept	Available	Available	Not available
Change	Main PIN	Main PIN or User	Not available
	needed	PIN needed
Setup	Main PIN	Main PIN needed;	Not available
	needed	User PIN invalid
MemoDose	Available	Available	Available*
Pin out details	Available	Available	Not available
Max	Available	Available	Not available
Dir	Main PIN	Main PIN or User	Not available
	needed	PIN needed
Auto / Man	Available	Available	Not available
Up	Available	Available	Not available
Down	Available	Available	Not available
Max and Up	Available	Available	Not available
Max and Down	Available	Available	Not available
Start	Available	Available	Available
Stop	Available	Available	Available
Enter	Available	Available	Not available
Keypad lock	Main PIN	Main PIN or	Main PIN or
	needed	User PIN needed	User PIN needed
Auto-restart	Available	Available	Available

*When the keypad is locked, MemoDose is available via its access shortcut: press STOP twice; it is not available through the menu structure.

The main code allows changes to Calibrate, Setup, Direction and Keypad lock.

The secondary (User) code permits Calibrate, Direction change and Keypad lock but bars Setup change.

If either code is used in conjunction with Keypad lock, all keys are disabled except STOP and START.

To activate and set a security code, see 18.19 Security code setup.

If the main code is lost or forgotten: The Setup main security code can be bypassed by entering a special key sequence; all codes can then be cancelled and reset. Contact Watson-Marlow or your distributor for details.

Watson-Marlow 520DuN IP66/NEMA 4X User Manual 30