HS.85 with SE-E* and SE-B*, PW start, stepless capacity control

Semi-hermetic screw compressor HS.85 with protection devices SE-E* and SE-B*, part winding start and stepless capacity control(1): pulse time approx. 0.5 to max. 1 s, depending on system characteristics
Semi-hermetic screw compressor HS.85 with protection devices SE-E* and SE-B*, part winding start and stepless capacity control
(1): pulse time approx. 0.5 to max. 1 s, depending on system characteristics

Last revision of the diagram:

13.02.2025

Abbr.

Component

B01

Compressor protection device

B02

Discharge gas temperature sensor

B03 .. 08

Temperature sensors in motor windings

B10

High pressure switch

B11

Low pressure switch

B14

Additional protection device for oil monitoring

B21

Optional temperature sensor

B24

Oil thermostat

B30

Oil level switch

B32

Oil level switch at oil separator

B41

Oil filter monitoring

B42

Oil flow switch

B50

High pressure transmitter

B51

Low pressure transmitter

B53

ECO switch-on

B60

Overload protective device

B61

Overload protective device for second part winding

B62

Rotation direction monitoring

C03

Electrolytic capacitor

E01

Oil heater

E02

Terminal box cover heater

F01

Main fuse

F02

Compressor fuse

F03

Control circuit fuse

F04

Fuse of compressor protection device or compressor module

F05

Fuse of oil heater

F07

Fuse of terminal box cover heater

F08

Fuse of rotation direction monitoring

K01

Superior controller

K01T

Time relay for part winding start or for star-delta start

K02T

Time relay for minimum shut-off period of compressor

K03T

Time relay for oil supply fault

K04

Auxiliary relay for oil monitoring

K04T

Time relay for oil level switch

K05T

Time relay for oil supply monitoring

K06T

Time relay for capacity regulator

M01

Compressor motor

M06

SV for economiser (ECO)

M11

SV for capacity regulator 1, CR1, CR+, CRII-2 or start unloading

M12

SV for capacity regulator 2, CR2, CR- or CRII-1

M13

SV for capacity regulator 3, CR3 or CRII-3

M14

SV for capacity regulator CR4

M17

SV for standstill bypass

M20

SV for liquid line

M40

SV for oil injection

P03

Light: time delay is activ

P04

Light: oil supply fault

P05

Light: compressor fault

P07

Light: wrong rotation direction

P18

Light: oil filter fault

Q01

Main switch

Q02

Contactor for first part winding (PW) or main contactor (Y/Δ) or compressor contactor (DOL)

Q03

Contactor for second part winding (PW) or delta contactor (Y/Δ)

Q04

Star contactor (Y/Δ)

Q05

Control transformer fuse

R06

Interference suppressor (if required, e. g. from Murr Elektronik)

S01

Control switch (on-off)

S02

Reset of compressor safety chain

S18

Reset of oil filter monitoring

T01

Control transformer (example for 230 V, required according to EN60204-1)

Technical documents for further information: