Davey Speedman Dual Pump Variable Speed Pump Control System - Manual (Page 38)

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JP Acceleration
The acceleration of the VSD can be limited by this figure. It is designed to brake
the PID control. It is used where the Acceleration needs to be dampened. The
figure is input in %/second.
JP Standby Test
This option allows the Jockey Pump a number of different modes to determine if
the system should be placed in standby mode.
Off- Standby test is disabled therefore the system will always run unless controlled
by an external signal.
Boost- Operates as detailed in other parts of this manual.
Flow Rate- If set to this mode, when the calculated or actual flow rate falls below the value “JP Stdby FlowMin”
for a period greater than set in the “Standby Test Time” which is in the TIMING menu then the system is placed
in standby mode.
Flow Switch- If set to this mode, when an input is programmed to become the flow switch input and this input is
activated for a period greater than set in the “Standby Test Time” which is in the TIMING menu then the system
is placed in standby mode.
JP Standby Boost
The Speedman tests to see if the system flow has stopped by boosting the system
pressure. The “Standby Boost” pressure sets the pressure boost.
The time that it takes to drop back to the SET POINT is compared to the “Standby Test”
timer. If the time to return to the SET POINT is greater than this time, then the system shuts down.
If the time to return to SET POINT is less than the “Standby Test” time then the system continues to operate.
JP Stdby FlowMin
Should the calculated or actual Jockey Pump flow rate fall below the
“JP Stdby FlowMin” value for a period greater than set in the “Standby Test Time”
which is in the TIMING menu, then the system is placed in standby mode.
JP Run On Time
The Jockey pump can be forced to keep running for a set period of time after
the main system has started.
NB. The jockey pump will not “run on” when selected as MAIN VSD in the JOCKEY PUMP MODE menu.
Instead it will instantly turn off when an auto pump starts. A VSD can only run one pump at any time.
JP Restart Delay
When the pressure drops below the JP Cut In
Pressure and remains there the Jockey pump will start after this period.
Given no auto pumps have started.
JP Min Frequency
This is the minimum frequency specific to the Jockey pump. See MINIMUM
FREQUENCY in TUNING menu for more information.
JP Acceleration
XXX %/Second
JP Test
Boost
JP Standby Boost
XXX
JP Run On Time
XXX Seconds
JP Stdby FlowMin
XXX
JP Restart Delay
XXX Seconds
JP Min Frequency
XX.X %