Schematic Wiring Diagrams For Semi-Hermetic And Open Drive Screw Compressors - Bitzer CM-SW-01 Original-Gebrauchsanweisung

5.2 Schematic wiring diagrams for semi-hermetic and
open drive screw compressors
Abbr. Component
B2 Superior controller
B5 Slider position indicator (SPI)
B6 High pressure transmitter
B7 Low pressure transmitter
B9 Oil pressure transmitter
F1 Main fuse
F2 Compressor fuse
F3 Control circuit fuse
F5 High pressure switch
F7 Oil supply monitoring
F9 Monitoring of oil stop valve
F10 Oil filter monitoring
F12 ECO control unit
F13 Overload protective device
F14 Overload protective device for the 2nd part
winding (only with part winding start)
F16 Rotation direction monitoring
F17 Control transformer fuse
F21 Fuse of the heating element in the terminal
box
F24 Phase monitoring fuse
F25 Oil level switch in the compressor
F30 Fuse of compressor module
H5 Light "oil stop valve fault"
H10 Light "collective fault"
K1 Main contactor (star-delta) or contactor "1st
part winding" (PW)
K2 Delta contactor (star-delta) or contactor "2nd
part winding" (PW)
K3 Star contactor (star-delta)
M1 Compressor
Q1 Main switch
R2 Discharge gas temperature sensor
R3..8 Temperature sensors in the motor
R9 Heating element for terminal box
R10 Optional temperature sensor
S1 Control switch (on/off)
S2 Reset of CM-SW-01
S4 Reset of "oil filter chamber"
T1 Control transformer (example for 230 V, re-
quired according to EN60204-1)
Y1 Solenoid valve in the oil injection line (option)
10
Abbr. Component
Y4 Solenoid valve "capacity regulator CR+"
With OS.85: "Capacity regulator CR1" limits to
minimum 75%
Y5 Solenoid valve "capacity regulator CR-"
With OS.85: "Capacity regulator CR2" limits to
minimum 50%
Y6 "Capacity regulator CR3" limits to minimum
25%
Y7 "Capacity regulator CR4"
Y8 Solenoid valve "ECO" (compressor option)
Y9 Solenoid valve in the oil return line from the
secondary oil separator (option)
Y11 Solenoid valve "V
Y12 Solenoid valve "V
SE- Protection device for oil filter monitoring
B2
Tab. 2: Legend for the schematic wiring diagrams of HS. and OS.
compressors with CM-SW-01
slider +"
i
slider -"
i
ST-150-3