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

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OPERATION
Control Options
65
OPERATION
Control Options
Hand/Auto Controls
The drive can be operated in either HAND or AUTO mode as follows:
• HAND mode runs the motor based on Hand Speed Ref [SET–09] (frequency source) and Hand
Run Cmd [SET–10]
(command source). The default for both settings are Keypad, which runs
the motor at a fixed speed (Keypad Setpoint) set on the Home Screen. Both settings can
be reprogrammed for external control. PID control is disabled in Hand mode.
• AUTO mode runs the motor based on AUTO Speed Ref [SET–07] (frequency source) and AUTO
Run Cmd [SET–08]
(command source). The speed reference default is set per application.
The run command default is Keypad. Both settings can be reprogrammed as required.
There are several options to consider for operation of the VFD through external HOA controls:
HOA Mode Source [SET–60]: Selects whether Hand/Auto control will come from the Key -
pad, a Digital Input, or Communications. When switching modes with the keypad, the VFD
will stop and then will start again when the
START key is pressed. When switching modes with
a DI or Comm source, the VFD will start based on the presence of a run command.
•
Keypad (Default): The VFD Keypad HOA buttons, including
START
and
STOP
, are fully
functional.
• Digital Input: Enables HOA control through an external switch wired to two digital
inputs (MI1 to MI8). These inputs should be set to 26_HOA Hand and 27_HOA Auto through
parameters
[IO–21]
to
[IO- 28]
. HOA mode is then determined as follows:
• RS485 Serial: Enables HOA control through Modbus communications.
• Com Card: Enables HOA control through BACNet communications. The combinations of 0x2002 bit 3
and bit 4 are defined as follows:
KPD STOP as OFF [SET–61]: When enabled, the Stop key acts as a keypad HOA OFF mode, stopping the
VFD from being controlled by anything other than an External HOA. To return to Auto or Hand mode, press
the corresponding key.
Hand Speed Ref [SET–09]: Source of Speed Reference in Hand mode. When in Hand mode, PID is disabled
and the VFD frequency is based on the following inputs:
•
Keypad (Default): VFD runs at a fixed frequency set on the Home Screen.
• RS485 Serial: Frequency input through Modbus control.
• AVI1 Analog : Inputs from external controller, potentiometer, or other device.
• ACI Analog : Inputs from external controller, potentiometer, or other device.
b
Run
H
A
58.7 PSI
60.00 Hz
K/K
2.22 Amp
JOG View . Faults
Auto
26_HOA Hand 27_HOA Auto HOA Mode
OFF OFF OFF
ON OFF Hand
OFF ON Auto
ON ON OFF
Bit 3 Bit 4 HOA Mode
0 0 No change
1 0 Hand
0 1 Auto
1 1 OFF