CS.65 .. 95 with frequency inverter and SE-i1, full sensor kit

Compact screw compressors CS.65 .. CS.95 with frequency inverter and protection device SE-i1, full sensor kit
Compact screw compressors CS.65 .. CS.95 with frequency inverter and protection device SE-i1, full sensor kit

Last revision of the diagram:

01.10.2018

Overall legend for schematic wiring diagrams CS.-compressors

Abbr.

Component

B1

Oil thermostat

B2

Superior controller

B5

Slider position indicator (SPI)

B6

High pressure transmitter

B7

Low pressure transmitter

B8

Condensing pressure transmitter

B9

Optional pressure transmitter

D1

Control board

D2

Extension board

F1

Main fuse

F2

Compressor fuse

F3

Control circuit fuse

F4

Fuse of oil heater

F5

High pressure switch

F6

Low pressure switch

F7

Cut in delay "ECO"

F8

Oil level switch (minimum oil level). CS.: option, CSV.: standard

F9

Control thermostat "liquid injection"

F10

Control thermostat for additonal oil injection, CSV.: for oil cooling

F13

Overload protective device

F14

Overload protective device

F15

Oil level switch (maximum oil level)

F16

Relay for protection functions to meet customers’ demands (frost protection, water flow, etc.)

F17

Control transformer fuse

F18

Control circuit fuse

F21

Fuse of heating element in terminal box

F24

Fuse of phase monitoring

F30

Fuse of compressor protection device or compressor module

H1

Light "motor fault" (over temperature / phase failure)

H2

Light "pause time"

H4

Light "oil level fault"

H8

Light "frequency inverter fault" (external frequency inverter)

H10

Light "collective fault"

K1

Contactor "first PW" (for PW) or "main contactor" (Y/Δ) or "Compressor contactor" (DOL, frequency inverter or softstarter)

K2

Contactor "second PW" (PW) or "delta contactor" (Y/Δ)

K3

"Star contactor" (Y/Δ)

K4

Auxiliary contactor (option)

K5

Auxiliary relay "compressor may run"

K6

Auxiliary contactor (option for OLC-D1-S) in case of oil return from secondary oil separator / system with flooded evaporator, DT-300)

K8

Auxiliary relay "frequency inverter fault"

K9

Auxiliary relay of frequency inverter "compressor is in operation"

K10

Auxiliary relay "compressor is ready-to-operate" (for message to system controller, CSV.)

K13

Auxiliary relay for star-delta switching

K2T

Time relay "pause time" 300 s

K3T

Time relay "part winding" 0.5 s or "star-delta" 1 s (CS.95: 1,5 .. 2 s)

K4T

Time relay "oil level switch" 90 s

K5T

Fixed pulse relay "CR4" flashing function on / off 10 s

K6T

Time relay "oil level switch" 90 s (relates to K6: OLC-D1-S in case of oil return from secondary oil separator / system with flooded evaporator, DT-300)

K7T

Time relay "start unloading" for frequency inverter operation. The time delay must be as long as the loading period of the DC link of the frequency inverter.

K8T

Time relay "oil return"

K10T

Time relay "oil level switch for maximum oil level". Test the switching time for each system individually.

K11T

Time delay of compressor start for fan pre-start

L1

Line reactor

M1

Compressor. CSV.: compressor motor

N1

Frequency inverter (FI)

N3

Soft starter

Q1

Main switch

R1

Oil heater

R2

Oil temperature sensor

R3

Motor temperature sensor (CSV.)

R3..8

Motor temperature sensors (CS.)

R9

Heating element for terminal box

R10

Optional temperature sensor

S1

Control switch (on/off)

S2

Reset "motor & discharge gas temperature" or "motor rotating direction"

S3

Press-button "motor-off"

S4

Reset "oil level"

T1

Control transformer (example for 230 V)

U

Interference suppressor: varistor or RC element integrated into solenoid valve plug, if required

Y1

Solenoid valve "capacity control" CR1

Y2

Solenoid valve "capacity control" CR2

Y3

Solenoid valve "capacity control" CR3

Y4

Solenoid valve "capacity control" CR4

Y5

Solenoid valve "liquid line"

Y6

Solenoid valve "ECO"

Y7

Solenoid valve "liquid injection" (only CSH and CSVH)

Y8

Solenoid valve "additional oil injection"

Y9

Solenoid valve "oil cooler line"

Y10

Solenoid valve "frequency inverter cooling"

Y11

Solenoid valve "Vislider +"

Y12

Solenoid valve "Vislider -"

Y13

Solenoid valve "oil return from flooded evaporator"

Z1

RFI filter

Technical documents for further information: