Bitzer ST-150-2, Техническая информация

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ST-150-2 7
Monitored
function Com-
pressor Measuring sensor
Discharge
gas tem-
perature HS./OS. Discharge gas temperature
sensor (R2)
Oil temper-
ature CSW105 Oil temperature sensor (R2)
Oil supply HS./OS. Opto-electronic oil monitor-
ing (F7)
Minimum
oil level CSW105 Opto-electronic oil monitor-
ing (F8)
Motor tem-
perature HS./
CSW105 PTC sensor in motor wind-
ings (R3..8)
Rotation
direction HS./
CSW105 Instrument leads on the
bolts of the motor power
supply
Unloaded
start All Slider position indicator
The compressor module compares the measured val-
ues with programmed data, sending signals via Mod-
bus and indicating the operating condition by means of
differently coloured LEDs. The compressor will be shut
down in case of operation beyond the application limits,
lack of oil, excessive motor temperature, wrong rotation
direction or critical motor start, see chapter Protective
functions, page 13.
5 Electrical connection
Keep the compressor module energized when the mo-
tor is not running. This ensures an unloaded start. With
CS. compressors, the module activates the oil heater, if
necessary, thus ensuring the lubricity of the oil even
after a long standstill period.
De-energize the module only if you plan a long stand-
still period of the compressor or for maintenance pur-
poses.
5.1 Schematic wiring diagram for CSW105
Abbr. Component
B2 Superior controller
B5 Slider position indicator (SPI)
B6 High pressure transmitter
B7 Low pressure transmitter
F1 Main fuse
F2 Compressor fuse
F3 Control circuit fuse
F5 High pressure switch
Abbr. Component
F8 Oil level switch (minimum oil level)
F13 Overload protective device
F15 Oil level switch (m
ax
imum oil level, option
of the compressor)
F17 Control transformer fuse
F24 Phase monitoring fuse
H10 Light "collective fault"
K1 Main contactor (star-delta)
K2 Delta contactor (star-delta)
K3 Star contactor (star-delta)
K4 Auxiliary relay
M1 Compressor
Q1 Main switch
R1 Oil heater
R2 Oil temperature sensor
R3..8 Temperature sensor in the motor
R10 Optional temperature sensor
S1 Control switch (on/off)
S2 Reset of CM-SW-01
T1 Control transformer (example for 230 V, re-
quired according to EN60204-1)
Y1 Solenoid valve "capacity regulator CR+"
Y2 Solenoid valve "capacity regulator CR-"
Y6 Solenoid valve "ECO"
Y11 Solenoid valve "V
i
"
Y12 Solenoid valve "V
i
slider -"
Y13 Solenoid valve "oil return from the flooded
evaporator"
Tab. 1: Legend for CSW105 schematic wiring diagram with CM-
SW-01 and star-delta start
The CSW105 compressor has a connection for oil and
gas return as an option for systems with flooded evap-
orator. For connection position, see Operating Instruc-
tions SB-170, chapter Mounting, Connections and di-
mensional drawings, position 17. The electrical integra-
tion of this option is shown in the paths 24 to 26. The
switching times of the solenoid valve must be controlled
by the superior system controller and individually tested
for each system.