1734-AND（1734停产系列）1734-AND

1734-AND
1734-AND
1734-AND

单纯从可靠性方面分析，纯硬件的冗余较之软件冗余并无优势。因为增加了较多的部件、模块，这些部件和模块的故障，也会影响系统的可靠性。例如，当两个热备模块之间的连接光缆出现故障，同样会使冗余控制失效。而软件冗余，只增加了一块CPU模块，而两个CPU模块的同时故障率几乎为零。

MERLIN GERIN 4A SINGLE POLE CIRCUIT BREAKER C60N 24428

ALLEN BRADLEY 110/120VAC COIL 10A CONTROL RELAY 700-F40

SIEMENS 4.5-6.3A SELF PROTECTED MOTOR STARTER SWITCH 3R

ROTANIUM 2 AWG 3/8" STUD DUAL-LOK TERMINAL LUGS, 31555

DANIEL WOODHEAD / BRAD HARRISON 41107 4P FEMALE MINI-CH

ABB S283 4A 3-POLE CIRCUIT BREAKER K4A

WARNER 90VDC ELECTRICALLY RELEASED BRAKE ER-400 5153-1

CSAT 6X35 FAN FOR PRINTER, NNB

ALLEN BRADLEY 110/115-120VAC COIL SIZE 3 STARTER 509-DO

PEPPERL + FUCHS 3 PIN PROXIMITY SENSOR NCB 2-12GM40-Z1-

KAMMANN TEMPERATURE CONTROLLER 49867 150 1000

BALLUFF C04EEC04U MIC 4P MOLDED SPLITTER, NEW

ADVANCE 120V 60HZ RAPID START BALLAST, RLQ-120-TP

NYCOIL 15251 5/16" I.D. X 25 FT 1/4 NPT NYLON RECOIL HO

NUMATICS 150PSIG-AIR, 1/2""NPT, SOLENOID VALVE 554JA43A

UNITED ELECTRIC 225 PSI, 1/4" NPT, 480V PRESSURE SWITCH