Danfoss DSH090 Application Guidelines

GENERAL INFORMATIONPRODUCT INFORMATIONINTEGRATION INTO SYSTEMORDERING INFORMATION SYSTEM DESIGN
Provide power supply and electrical protection
Requirements:
• Protect the compressor from short circuit and
overcurrent by a thermal magnetic motor circuit
breaker set to Max. operating current or lower
(see table in section “Three phase electrical
characteristics”). For DSH090-105-120-140-161-
184, phase sequence protection is strongly
recommended.
• Compressor models DSH240-295-381-485 are
delivered with a pre-installed motor protection
module inside the terminal box that must be
powered on.
• HP safety switch, DGT (only for DSH090 to
DSH184) and electronic module relay output
(M1-M2, only for DSH240 to DSH485) must be
wired in the safety chain. Other safety devices
such as LP can be either hardware or software
managed.
• Provide separate electrical supply for the
heaters so that they remain energized even
when the machine is out of service (e.g.
seasonal shutdown).
The wiring diagrams below are examples for a safe and reliable compressor wiring:
Compressor model DSH 090 - 105 - 120 - 140 - 161 - 184
Wiring information
M
DGT
HP
UNIT
CONTROLLER
SS CC
F1 F1
KM
CB
Ph
L1
L1
L3
L3
L2
T1
T3
T2
KM
SSH
LPS
Ph
Legends
Fuses .............................................................................................................F1
Compressor contactor ............................................................................ KM
High pressure safety switch....................................................................HP
Safety pressure switch ........................................................................... LPS
Discharge gas thermistor ....................................................................DGT
Compressor motor .................................................................................... M
Surface sump heater .............................................................................. SSH
Thermal magnetic motor circuit breaker .......................................... CB
Phase sequence relay ............................................................................... Ph
43FRCC.PC.045.A7.02

Danfoss DSH090 Specifications

General

Brand	Danfoss
Model	DSH090
Category	Air Compressor
Language	English