Siemens SIMATIC S7 - Page 48

A-2
SM338EquipmentManual
(4)J31069-D401-U1-A0-7618
A.1 TechnicalSpecifications
Housing
Dimensions(inmm) 80x125x120
Weight 500g
Protectionclass IP20
PositionSensors
Number Max.of4
Numberofmeasuring
points
Max.of8,max.of4per
sensor
Measuringrange 3/6m
Resolution 0.05/0.1mm
Programmablemeasuring
cycles
0.5to16msec
Supplyvoltageforsensors
Withpotentialisolation
SVoltage
Totalcurrent
SVoltage
Totalcurrent
Totalpowertosupplysen-
sors
+15V
200mA
24V
300mA
Max.of7.2W
Interface RS422withSTART/
STOPinterface
Frontconnector 25-way,subDsocket
Linelength Max.of50m
SupplyVoltagefortheModule
Internal
Currentconsumption
FromS7-300bus
80mA(typical)
100mA(maximum)
External
Permissiblevoltage
range
Currentconsumption
Withoutsensors
Withsensors
Fuse
Polereversalprotec-
tion
24V
20.4to28.8V
Max.of0.1A
Max.of0.85A
Fine-wirefuse,1.0A,
delayed
Yes
EnvironmentalRequirements
Environmentaltempera-
ture
Horizontalinstallation
Verticalinstallation
0°to60°C
0°to40°C
Relativehumidity 5to95%
(withoutcondensation)
Airpressure 860to1080hPa
Pollutionconcentration
SO
2
H
2
S
Max.of10ppm
Max.of1ppm
Vibration
10to57Hz
57to150Hz
0.075mmamplitude
1gconst.acceleration
TransportationandStorageRequirements*
Freefall
(inacc.withIEC1131-2)
<1m
Temperature
(inacc.withIEC1131-2)
-40°Cto+70°C
Airpressure >700hPa(correspondsto
aheightof3000m)
Relativehumidity 5to95%(withoutcon-
densation)
Appendix
*Inoriginalpackaging