Westermo MDW-45 - Manual (Page 18)

18 6617-2203
Care recommendations
Follow the care recommendations below to maintain full operation of unit and to fulfil
the warranty obligations.
… This unit must not be operating with removed covers or lids.
… Do not attempt to disassemble the unit.
… There are no user serviceable parts inside.
… Do not drop, knock or shake the unit, rough handling above the specification may
cause damage to internal circuit boards.
… Do not use harsh chemicals, cleaning solvents or strong detergents to clean the
unit.
… Do not paint the unit. Paint can clog the unit and prevent proper operation.
… Do not expose the unit to any kind of liquids (rain, beverages, etc).
The unit is not waterproof. Keep the unit within the specified humidity levels.
… Do not use or store the unit in dusty, dirty areas, connectors as well as other
mechanical part may be damaged.
If the unit is not working properly, contact the place of purchase, nearest Westermo
distributor office or Westermo Tech support.
Line connection
*) If shielded cable is used, connect the shield only at one end to avoid ground currents.
4-wire
MDW-45
RS-422/485
equipment
RS-422/485
equipment
Transmitter/
Receiver
Transmitter/
Receiver
Twisted pairs
Twisted pairs
Receiver
Transmitter
Transmitter
Receiver
R+
R–
T+
T–
T+
T–
R+
R–
T+/R+ T+/R+
T–/R– T–/R–
1
2
3
4
3
4
MDW-45
2-wire