FOCUS
1.6
Functions
Page 24
BOGE FOCUS compressor control for piston compressors
Motor spinning time
For motors with less than 15 switching cycles per hour the control unit reserves
a spinning time of 20s during contactor operation after switching off the motor
contactors. A switching-on of the motor is disabled within this period of time.
Pressure range
selection
If an optional RS485 module is used as slave (modbus address larger than
zero), the pressure range is exclusively determined by the master of this bus
system – independently of the live bit.
If the digital input of the basic module clamp '42' (input reference clamp: 31) is
used, the pressure range 2 can be selected or cleared by closing.
If the serial modbus is used for pressure range selection, pressure band 2 can
be selected or cleared by setting bit 3 (write register address 1) – indepen-
dently of the live bit. The internal timer then does not influence the pressure
range.
If the internal timer is used for pressure band selection, pressure band 2 can-
not be selected or cleared by it if this is not done with a RS485 interface.
TAN test
If the
key
is pressed for three seconds during the display of the boot image
you get to the display
TAN test
.
A test is selected by means of the
/
keys
and by actuating the
ENTER
key
. The TAN test can be left by pressing 'back' or by actuating the
INFO
key
.
The TAN test offers a selection of three tests:
–
Screen:
The screen becomes dark and is continuously set up again by
means of dark vertical stripes, so that all pixels are activated and deacti-
vated. Leave the Screen-Test by pressing the
INFO key
.
–
Keys:
A display is shown where all keys of the TAN are displayed. If a key
is actuated it gets a dark background. After all keys have been pressed the
display goes back to the selection display.
In case one of the keys is defective a count down of 30 seconds is started.
When this time is elapsed he display changes automatically back to the
selection display.
–
LED:
If this option is chosen the LEDs are activated and deactivated in a
variable sequence . As an additional control the symbols of the three LEDs
are displayed and shown with a black background when activated, so that
it is clear which off the LEDs should be illuminated. You leave the LED-
Test by pressing the
INFO key
.
Safety valve test
To test the safety valve, the
ENTER key
is pressed for three seconds when
viewing the system or suction pressure display.
If the system pressure display starts to flash, all parameterised pressure limi-
tations are deactivated, and the compressor is in operation while the
-key
is pressed.
This function is terminated by pressing the
OFF key
or switching to another
screen.
