Electrical Connections Of The As-I Master Cm 1243-2 - Siemens SIMATIC S7 System Manual
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- System manual (866 pages) ,
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553BTechnical specifications
A.10 Communication interfaces
Technical data
Conductor cross-section
ASI connector tightening torque
Permissible ambient conditions
Ambient temperature
During storage
During transport
During the operating phase, with vertical installation
(horizontal standard mounting rail)
During the operating phase, with horizontal installation
(vertical standard mounting rail)
Relative humidity at 25 °C during operating phase, no
condensation, maximum
Degree of protection
Power supply, current consumption, power loss
Type of power supply
Current consumption (typically)
From the S7-1200 backplane bus
Power loss (typically)
From the S7-1200 backplane bus
Dimensions and weights
Width
Height
Depth
Weight
Net weight
Weight including packaging
A.10.3.2
Electrical connections of the AS-i master CM 1243-2
Power supply of the AS-i master CM 1243-2
The AS-i master CM 1243-2 is supplied over the communications bus of the S7-1200. This
means that a diagnostics message can still be sent to the S7-1200 following failure of the
AS-i supply voltage. The connection to the communications bus is on the right-hand side of
the AS-i master CM 1243-2.
750
0.2 mm² (AWG 24) ... 3.3 mm² (AWG 12)
0.56 Nm
-40 °C ... 70 °C
-40 °C ... 70 °C
0 °C ... 55 °C
0 °C ... 45 °C
95 %
IP20
DC
200 mA
2.4 W from AS-i
0.5 W
30 mm
100 mm
75 mm
122 g
159 g
System Manual, 11/2011, A5E02486680-05
S7-1200 Programmable controller
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- Introducing the S7-1200 Plc
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