Bitzer SE-B2

ST-120-3
Protection devices for screw compressors of HS.-, CS.-, OS.-, VSK series
Translation of the original document
English....................................................................................................................................................... 2
Schutzgeräte für Schraubenverdichter der HS.-, CS.-, OS.-, und VSK-Serie
Originaldokument
Deutsch ..................................................................................................................................................... 14
Dispositifs de protection pour des compresseurs à vis des séries HS.-, CS.-, OS.-, et VSK
Traduction du document original
Français..................................................................................................................................................... 25
SE-E1
SE-E3
SE-B2
OFC
Electrically skilled installer
Elektrisch unterwiesener Monteur
Monteur habilité

Bitzer SE-B2 Specifications

General

Brand	Bitzer
Model	SE-B2
Application	Refrigeration systems
Pressure range	Not applicable
Protection class	IP54
Function	Monitoring and protection
Monitored parameters	Oil level
Alarm output	Relay output
Supply voltage	AC 24 - 240V, DC 24V
Mounting	Compressor housing
Dimensions	Varies depending on model configuration
Certifications	CE
Features	Adjustable time delay, LED status indication

Summary

Introduction

Safety

Authorized Staff

Qualifications and training required for personnel working on protection devices and refrigeration systems.

Residual Risks

Highlights potential hazards associated with compressors and electronic accessories, emphasizing document reading.

Safety References

Instructions to prevent hazards, requiring strict observance for safe operation.

Overview and Technical Data

Technical Data

Summary of monitoring functions and compressor series compatibility for protection devices.

SE-E1 and SE-E3

Monitoring Functions SE-E1 and SE-E3

Details on monitoring functions like temperature, rotation direction, and phase failure for SE-E1 and SE-E3 devices.

SE-B2

Monitoring Functions SE-B2

Explains the use of SE-B2 for oil flow monitoring in semi-hermetic and open drive screw compressors.

OFC

Fixation

Describes the mounting options for the OFC protection device, typically in a switch cabinet.

Control Delay

Specifies the time delays for the OFC device during start procedure and operation.

Connecting the Oil Flow Monitoring

Guidance on connecting the OFC device for oil flow monitoring, referencing wiring diagrams.

LockedReset

Procedure for resetting the OFC device after a fault condition has occurred.

Electrical Connection

CS Series: Connection of SE-E1 SE-E3

Wiring diagram for connecting SE-E1/SE-E3 protection devices in CS series compressors.

HS.53..HS.74: SE-E1 SE-E3 with SE-B2 Connection

Wiring diagram for SE-E1/SE-E3 with SE-B2 in HS.53..HS.74 compressors.

HS.53..HS.74: SE-E1 SE-E3 with OFC Connection

Wiring diagram for SE-E1/SE-E3 with OFC in HS.53..HS.74 compressors.

HS.85: SE-E1 SE-E3 with two SE-B2 Connection

Wiring diagram for SE-E1/SE-E3 with two SE-B2 in HS.85 compressors.

HS.85: SE-E1 SE-E3 with two SE-B2 and OFC Connection

Wiring diagram for SE-E1/SE-E3 with two SE-B2 and OFC in HS.85 compressors.