User Manual for BPS-200
www.levitronix.com
PL-4012-00, Rev07, DCO# 20-144
26
5.1.2 Standalone Operation (Button Control Mode)
◼
When applying power the system defaults into the
“Button Control Mode
” and goes into the status
“OFF Button
Control”
. Levitation is disabled and the display indicates
“OF”
.
◼
Levitation can be enabled by pressing the
“UP”
button during 1 second (display shortly indicates
“ON”
) or by
activating (typically 24V) the
“ENABLE”
pin on the
“USER INTERFACE”
). The system
goes then into the status
“ON Button Control”
and is running at the speed, which is stored in the EEPROM.
◼
The speed can be changed by pressing accordingly the
“UP”
and
“DOWN”
buttons. As long as the digits on the
display are blinking the set speed is shown. As soon as blinking stops the actual speed is shown and the set-
speed is stored in the EEPROM of the controller.
◼
The system can be disabled by pressing the
“DOWN”
button until 0 rpm is achieved. Pressing further 1 second
the
“DOWN”
button the system disables levitation and shows
“OF”
on the display. The system can also be
disabled by deactivating (0 V) the
“ENABLE”
pin on the
“USER INTERFACE”
). Before
disabling the system the speed is automatically reduced to 0 rpm and the impeller is properly touched down
without grinding the wall.
◼
To show the motor temperature in the display the
“UP”
and
“DOWN”
button has to be pressed simultaneously
for 1 second. After entering this mode, motor temperature is shown twice switching between
“ C”
and
temperature value in °C. After finishing this procedure system returns automatically to previously active mode.
◼
In case of an error the
“RESET”
) can be used to restart the system or the power can be
switched off and on.
◼
For error analysis the codes described in
are displayed (blinking between
“Er”
and the according code
number).
◼
If the system shall be enabled automatically, when power is applied the
“ENABLE”
pin on the
“USER
INTERFACE”
) has to be active (typically 24V). When switching on the power the
system is running with the stored speed.
◼
For monitoring purposes a digital output on the
“USER INTERFACE”
) indicates the
status of the system. When the impeller is rotating the digital output
“Status”
turns active.
The digital input
“ENABLE”
is normally edge-triggered to allow control by digital input and buttons in order to
enable/disable systems simultaneously. An exception is, when the system is powered up or a system reset
occurs: than the system checks the level of the digital input and switches to the desired state. Hence on
startup a high level of the digital input
“ENABLE”
is sufficient to switch on the system and a transition from
low to high is not required.
5.1.3
Extended Operation (“Analog Control Mode”)
◼
In order to be able to control the pump with external signals (PLC) the mode
“Analog Control Mode”
has to be
set with the display buttons. The
“UP”
and
“DOWN”
buttons have to be pressed simultaneously during 5
seconds. The display should feedback the change by blinking between the stored speed value and
“An”
. The
chosen mode is then stored in the EEPROM of the controller. After startup the system returns to the operation
mode selected previously.
◼
The system and levitation can be enabled/disabled with the digital input on the
“USER INTERFACE”
connector
). When disabling the running system the speed is automatically reduced to 0 rpm and the impeller
is properly touched down without grinding the wall. The display is blinking between
“An”
and
”OF”
. Alternatively
“UP”
button is also able to switch on system, with
“DOWN”
button the system can be switched off.
◼
The speed can be set with an analog signal on the
“USER INTERFACE”
. It is
strongly recommended to use galvanic separated signal values.
◼
For monitoring purposes a digital output
“Status”
on the
“USER INTERFACE”
connector (see
indicates the status of the system. When the impeller is rotating the digital output
“Status”
turns active.
