RATIO.pm6.5 - USA
Page 1.15
RATIO
BOGE – RATIO compressor control for screw compressors
Control Parameterization
1.5
If the output of a compressor is to be enabled by a higher level control unit,
its parameterization must be changed as follows:
1. Enter Code 210 as described under parameterization
→
and the display
shows from Fig.
c
on the left. The 'zero' at the top right blinks. This dis-
play means: no additional enabling device is programmed.
2. Press
↓
-key to switch to Fig.
d
–
↑
-key to switch back. Digit One and
the bottom symbol 'external output release' are blinking.
This display means: enabling device (e.g., MCS) is enabled via input
'Pressure control' (for potential-free contact) – see also 'Switching
Local/
Remote via key switch' and 'RS485-Bus-address setting'. If the
↵
-key is
pressed during this, one of the following pictures appears
e
+
f
–:
Fig. 3: The three top dashes and the 1 are blinking. The P and the three
top dashes mean, that falling below the network pressure (Manometer 21)
P
min
starts a load operation, even with an open input 'Pressure control'
– number '18' is displayed and the "warning" relay is activated – thus ac-
tuating the operating mode. Press
↓
-key to switch to Fig.
f
– press
↑
to toggle back –:
Fig. 4: The falling and rising (dotted) pressure curve and digit 0 are blink-
ing. This figures means that due to the open input 'Pressure control' a
falling below the network pressure P
min
is possible (as e.g. at night and
over the weekend).
Press
↵
-key to overwrite the non-volatile EEPROM as per the blinking
symbol, and the main display reappears.
In the bottom display the symbol
appears. The following applies
even with external enabling: If the upper target pressure value in the
compressor is exceeded, the output will be shut off. Only when the the
pressure drops to the lower target pressure value the external control
resumes.
If the
↵
-key under point 2 was not pressed, press
↓
-key to change to Fig.
g
– press
↑
to toggle back –:
Digit Two and the two bottom symbols 'external output release' and 'on-
line' are blinking. This display means: enabling device (e.g., master con-
trol) is enabled via a serial interface, if the input 'external output release'
is closed – see also 'Switching
Local/Remote via key switch' and 'RS485-
Bus-address setting'.
3. Press
↓
-key, if convenient (not with key switch function) to switch to Fig.
h
– press
↑
to toggle back.
Manometer '22' and digit 3 are blinking. This setting means that a limiting
suction pressure switch (continuous output control) is connected to the
input 'Pressure control'.
4. Press
↵
-key to overwrite the non-volatile EEPROM as per the blinking
symbol, and the main display reappears. If the compressor is set for an
output enabling device (e.g. mode 2), the bottom of the main display shows
the appropriate Symbol
. The following applies even with exter-
nal enabling: If the upper target pressure value in the compressor is ex-
ceeded, the output will be shut off. Only when the the pressure drops
to the lower target pressure value the external control resumes.
External
output enable
c
d
e
!
!
!
!
f
g
h
