System Components and Technical Data
164 Unrestricted SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
DC8-037-2.02, Edition 10.2017
5.8 MTBF Values of the SICAM A8000 Modules
The MTBF values shown in this section have been calculated according to Siemens standard
SN29500. All electrical and electromechanical components have been considered.
Not included are mechanical components (screws, housing, adhesive labels, etc.).
The values have been calculated for an ambient temperature of 40°C.
The following specified values of MTBF are statistic values which serve only for the estimation
of maintenance and substitute needs. These values are no guaranteed product attribute.
Master Modules
Module MTBF at 40°C
[Hours] [Years]
CP-8021 Master Module 682 165 77,87
CP-8022 Master Module with GPRS 485 206 55,39
Power Supply Modules
Module MTBF at 40°C
[Hours] [Years]
PS-8620 Power supply DC 24 to 60 V, 12 W 1 809 267 206,54
PS-8622 Power supply DC 110 to 220 V, 12 W 1 748 221 199,57
PS-8640 Power supply DC 24 to 60 V, 45 W 1 490 671 170,1
PS-8642 Power supply DC 100 to 240 V, AC 100 to 240 V, 45 W 1 014 243 115,8
SICAM I/O Modules
Module MTBF at 40°C
[Hours] [Years]
AI-8310 Analoge Eingabe 2x2 Pt100/Pt1000 1 293 929 147,71
AI-8320 Analoge Eingabe 4x ±20 mA 2 238 589 255,55
AI-8510 Analoge Eingabe 3x U (230 V), 3x I (LoPo) 1 354 169 154,59
AI-8511 Analoge Eingabe 3x U (LoPo), 3x I (LoPo) 1 408 352 160,77
AO-8380 Analoge Ausgabe 4x ±20 mA/±10 V 1 377 524 157,25
CM-8820 Stromwandler Adaptermodul für AI-8510 11 993 284 1369,10
DI-8110 Binäre Eingabe 2x8, 24 VDC 1 617 914 184,69
DI-8111 Binäre Eingabe 2x8, 48/60 VDC 1 617 914 184,69
DI-8112 Binäre Eingabe 2x8, 110 VDC 1 617 914 184,69
DI-8113 Binäre Eingabe 2x8, 220 VDC 1 552 120 177,18
DO-8212 Binäre Ausgabe Relais 8x 24…220 VDC/230 VAC 2 362 056 269,64
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