Reset; Automatic Time-Delayed Reset - Bitzer KT-230-2 Technical Information

Monitored function
Discharge gas temperature
Motor temperature
Oil supply
Switching frequency of the
compressor
Application limits, option
(condensing temperature,
evaporating temperature)
Low pressure, option
State of delivery
High pressure, option
State of delivery
Switch-off pressures for the high and low pressure side,
which are given in the table, describe the delivery state.
They can be customized with the BEST SOFTWARE,
see chapter Activating high- and low-pressure
switches, page 29.

9.1 Reset

The compressor module monitors the measurement
data of numerous sensors. If a fault occurs, at least one
shutdown value has been exceeded. The module then
switches off the compressor motor. Depending on the
26
Delay time after Warning
compressor start
--- > 135 C
--- ---
90 s 5 s
--- >8 compressor
starts within one
hour
with frequency
converter opera-
tion: > 12 com-
pressor starts
within one hour
120 s < 2 K within the
application limit
--- ---
--- ---
Critical alarm
---
---
---
---
> 2 K outside the
application limit
CM-RC-01 locks
after 30 s
---
---
type of fault, it resets automatically with a time delay or
it locks and must be externally reset.

9.2 Automatic time-delayed reset

As soon as the measured value of the sensor that
triggered the fault falls below the restart threshold, the
compressor motor is switched on again with a time
delay. The alarm message in the alarm list becomes in-
active. The factory setting of the time delay is 60 s. This
setting can be changed with the BEST SOFTWARE.
Fault
> 150°C
CM-RC-01
switches off imme-
diately.
CM-RC-01 locks
immediately.
CM-RC-01 locks
after 90 s.
---
4 K outside the ap-
plication limit
CM-RC-01
switches off imme-
diately.
< 1.2 bar absolute
pressure (corres-
ponds to 0.2 bar
relative pressure
at normal altitude
zero)
CM-RC-01 locks
immediately.
> 33 bar absolute
pressure (corres-
ponds to 32 bar re-
lative pressure at
normal altitude
zero)
CM-RC-01 locks
immediately.
KT-230-2