Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual

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OPERATION
Control Options
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FO Mode & Reset [IO–33]: Sets control method and reset method during FO.
NOTE: This parameter overrides all non-critical faults. When FO is activated, the Auto Retry Delay [PROT-11]
is ignored and the current fault,
Auto Retry Delay [PROT-11]
, and Auto Restart counter will be reset.
FO PID S-Point [IO–34]: Setpoint for PID operation during FO.
FO Bypass [IO–72]: Enables Bypass for FO.
FO Bypass Delay [IO–73]: Time delay between FO becoming active and enabling relay output.
Pump Application Features
Sleep Mode with Pressure Boost
The Sleep feature monitors pressure and frequency to detect a no-demand condition, at which point it stops
the motor. The Sleep Feature also has the option to boost system pressure by a set amount before stopping.
The Sleep feature works only in Auto mode using PID. PID2 operation does not have Sleep function.
Set following parameters to control Sleep functions:
Sleep Mode [SET–26]: This setting enables or disables sleep mode and the sleep plus boost option. The
default value for submersibles and surface/boost applications is
1_Sleep Only
. If a pressure boost is desired
while the system is at rest, select 2 Boost and set a Sleep Boost Value [SET–29] .
Sleep Check Time [SET–27]: Time delay (sleep check cycle time) before each Sleep Check procedure.
Default = 10 sec.
Sleep Delay [SET–28]: Delay before VFD triggers Sleep Mode when all other conditions are met. Default = 6
sec.
Sleep Boost Value [SET–29]: Value added to original setpoint to provide pressure boost—0.0 to 10.0% of
PID F/B Max [SET–20] . Default = 3%.
Sleep-Boost Timer [SET–30]: Timer that limits sleep boost duration if Sleep Boost setpoint is not reached
(5 to 120 sec). Default = 10 sec.
Wakeup Level [SET–31]: Sets a wakeup level for VFD to quit Sleep mode and start running—0.0 to
[SET-21]
.
Default = 55 PSI.
Sleep Bump Timer [SET–32]: Sets a duration time for pressure bump to increase system pressure as part of
the no-demand calculation. Default = 5 sec.
No Flow Mode [IO–38]: If a flow switch is installed on one of the Digital Inputs
(MI1–MI8)
and
[IO-38]
is set to
2_Sleep , the flow switch becomes an additional condition for sleep mode. If Sleep Delay timer has started
and the flow switch opens at any time before the timer expires, the VFD will immediately go to either sleep
mode (no Sleep Boost) or to Sleep Boost mode (with S-boost enabled).
All default settings related to Sleep mode have been calculated for best system performance for most appli
-
cations. However, some well conditions may require a slight adjustment.
During system setup it is recommended to test the Sleep feature by closing a main valve to simulate a no-
demand condition. The system should be running at normal demand, maintaining pressure setpoint, then
flow should be decreased slowly until stopped.
•
If the system does not enter Sleep mode, it may be necessary to increase the
PID Lo Hz Limit [SET–22]
to
ensure that system pressure reaches PID Setpoint [SET–21] (plus boost, if enabled).
• If, during normal operation, the system enters Sleep mode but cycles on and off rapidly as it nears the
Setpoint, it may be necessary to slightly lower the
PID Lo Hz Limit [SET–22] to prevent Sleep mode prob -
lems.