ST-150-2
13
7
Protective functions
The green LED is on during normal operation. The
LEDs can be seen through a sight glass on the right
side of the module housing.
Before the measured value of a sensor reaches a crit-
ical threshold, the compressor module outputs an alarm
signal via the Modbus RS485 interface (CN14). In this
case, the yellow LED lights up. Once a measured value
is considerably outside the allowable range, the com-
pressor module will immediately switch off the motor.
The red LED lights up.
The blue LED lights up when data are transmitted via
the Modbus or the Bluetooth interface.
Depending on the measured values, up to 3 alarm
levels are defined. These alarms are recorded and dis-
played using the BEST SOFTWARE. The alarm levels
make it possible to programme a system controller in a
way that allows the compressor to be controlled within
the application limits.
Warning
The warning threshold is exceeded when the applica-
tion limit is almost reached. The yellow LED lights up.
This is a software message, not a safety reference. The
warning refers exclusively to the critical operating con-
dition of the compressor.
Critical alarm
The cut-out value is exceeded. The yellow LED lights
up. If the corresponding measured value does not drop
again within the corresponding time delay, the com-
pressor will be switched off. This cut-out is classified as
fault in the alarm list.
Fault
The cut-out value has been exceeded too much or for
too long. The compressor is switched off. The red LED
lights up.
Monitored function
Time delay
after com-
pressor start
Warning
Critical alarm
Fault
CSW105
Low pressure
---
---
---
< -0.2 bar negative pressure
(corresponds to < 0.8 bar abso-
lute pressure at sea level)
CM-SW-01 locks out immedi-
ately.
High pressure
---
---
---
> 21 bar excess pressure (cor-
responds to > 22 bar absolute
pressure at sea level)
CM-SW-01 locks out immedi-
ately.
Application limits
(Condensing temperature,
evaporation temperature)
120 s
< 2 K within the
application lim-
its
> 2 K outside
the application
limits
CM-SW-01
locks out after
30 seconds.
> 4 K outside the application lim-
its
CM-SW-01 locks out immedi-
ately.
Oil temperature
---
> 115°C
---
> 120°C
CM-SW-01 locks out immedi-
ately.
Minimum oil level
---
5 s
---
CM-SW-01 locks out after 90
seconds.
Rotation direction
---
---
---
CM-SW-01 locks out immedi-
ately.
OS.95
Содержание ST-150-2
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