描述
为使PLC能可靠工作,在硬件与软件两个方面PLC厂家都采取了很多措施,对一些特殊可靠要求的PLC,还有相应的特殊的措施,如热备、冗余等等。这在介绍PLC的特点时已作了叙述。可靠措施的目的是增加PLC平均故障间隔时间、MTBF(MeanTimeBetweenFailure)及减少PLC的平均修复时间、MTTR(MeanTimeToRepair),以提高PLC的有效度A(Availability)。
Expedited shipping available
Baldor 5hp air material transfer blower dust collector
BALDOR VWDM3542 AC WASHDOWN MOTOR 3/4-HP 1725-RPM WHITE
baldor CEM3665T 5-hp 1450-rpm 208-460-v ac drive motor
One-day shipping available
BALDOR SERVO PRODUCTS MOTOR MT-3363-FL-3B2 (435)
NEW BALDOR BRAKE MOTOR VBM3611T 3 HP 1725 RPM 182T FR.
One-day shipping available
NICE BALDOR SWEODRIVE 604-1020-175
With 90 warranty
NICE BALDOR SWEODRIVE POWER SUPPLY 604-PS75
With 90 warranty
NICE BALDOR SWEODRIVE 604-1020-102
With 90 warranty