3-8 Using the Waters 515 Pump
HPL Selects the
high-pressure
limit
In Local mode: Pressure greater than or
equal to the HPL for 1.2 sec stops the
pump.
*
In Rem mode: Pressure greater than or
equal to the HPL for 1.2 sec causes the
pump to send a pressure-limit output
signal to the external controller.
Programming at the controller
determines whether to stop the pump or
continue running.
*
As a fail-safe, if the pump pressure
exceeds maximum for 1.2 sec in either
Local or Rem mode, the pump stops.
The HPL default setting is:
• 6000 psi (41370 kPa, 401 bars) for
100-µL heads
• 3000 psi (20685 kPa, 200.5bars) for
225-µL heads
These are the maximum HPL settings.
When you change the value of the HPL
parameter, the increment of change
varies according to the Unit selected (see
the Unit parameter section in this table).
*
Refer to the Mode parameter section in
this table for information about Local and
Rem mode.
515 pump operating parameters (Continued)
Parameter Function Details
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