OPERATION
Control Options
70
Screen Clean Relay
When water is pumped from a lake or pond, the suction screen requires periodic cleaning. The VFD can
automate this process by providing a relay output to an external solenoid valve that will discharge pressur
-
ized water to clean the screen.
This feature works only in run mode in HOA Hand or Auto. If HOA is in OFF, or the VFD stops or trips on a
fault, the Clean Screen mode will be deactivated and related timers will be reset.
The VFD provides a one minute (non-adjustable) cleaning pulse at every start. When the cleaning pulse is
done, the
S-Clean Timer [IO–42]
starts. When the timer ends, another cleaning pulse is activated. This cycle
continues until the VFD stops.
To enable the Clean Screen function, set the following parameters:
Screen Clean Output Terminal [IO–47 through 49]:
Connect the lubrication actuator to one of the Relay
Outputs (RA1–3), and set the corresponding parameter to
41 Lube/S-Clean
.
Lube/S-Clean [IO–41]:
Select the
Screen Clean
option.
S-Clean Timer [IO–42]:
0 to 600 minutes. Time between cleaning pulses.
Timers
IMPORTANT:
If two or more timers are activated with different time settings, the greater value timer will
override other timers with a similar function.
Power On Run Delay
This timer provides run delay at VFD power-up with run command present to prevent multiple starts during
power surges.
Set the following parameter to activate this feature:
Power On Delay [ADV–28]:
Range from 0 to 6000 sec. (Default=10sec). When set to 0 sec, it is disabled.
When set to a value greater than 0 and VFD is powered up in any HOA mode, the timer will start counting
and VFD start will be disabled until the timer expires.
Run Delay Timer (For Auto Mode)
This timer provides a delay at every VFD start when a run command is applied. The timer takes effect before
every VFD start by run command, auto-restarts, fault reset, sleep wake-up, etc.
NOTE:
FO (Fire Override) mode will disable this timer.
Set the following parameter to activate this feature:
Run Delay Timer [ADV–29]:
Range from 0 to 6000 sec. (Default=0 sec). When set to 0 sec, it is disabled.
When set to value greater than 0 and VFD receives a start command, wakes up, auto resets, or restarts after
a fault reset, the Start Delay timer will start counting. During timer counting, start is disabled and the VFD
cannot be started in Hand or Auto mode. Stop command, Sleep mode, or tripping on a fault will reset this
timer.
Minimum Run Timer
The Minimum Run timer delays VFD stop when a run command is removed. This timer is useful in vacuum
pump, pressure washer and similar applications.
Submersible motors should run for a minimum of one minute to dissipate heat build-up from starting cur
-
rent.
Set the following parameter to activate this feature:
Summary of Contents for Cerus X-Drive
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Page 3: ...CERUS X DRIVE INSTALLATION AND OPERATION MANUAL Firmware Version 1 1 Franklin Electric Co Inc ...
Page 94: ...COMMUNICATIONS BACnet Communication 94 ...
Page 98: ...ACCESSORIES Optional Extension Cards 98 Frame D Frame E Frame F ...
Page 99: ...ACCESSORIES Optional Extension Cards 99 Frame G Frame H ...
