主营产品: AB,ABB,GE,本特利,福克斯波罗,英维斯,西屋,艾默生,横河
全新原装正品,大量现货,提供一年质保,15天包退换。
本公司所有产品都经过专业严格检测,欢迎询价,采购。
询价可拨打客服热线:0592-6895490
--------------------------------------------------------------------
询价热线: 18050036946 0592-6895490
询价客服QQ:1811245942
询价邮箱: 1811245942@qq.com
询价传真: 0592-6514751(请备注祖工收)
诚信经营,质量为首,诚信至上,竭诚为您服务!
-----------------------------------------------------------------
(1)PLC输出电路中没有保护,因此在外部电路中应设置串联熔断器等保护装置,以防止负载短路造成PLC损坏。熔断器容量一般为0.5A。
(2)PLC存在I/O响应延迟问题,因此在快速响应设备中应加以注意。MPI通信协议虽简单易行,但响应速度较慢。
(3)编制控制程序时,最好用模块式结构程序。这样既可增强程序的可读性,方便调试和维护工作;又能使数据库结构统一,方便WinCC组态时变量标签的统一编制和设备状态的统一显示。
(4)硬件资源。要合理配置硬件资源,以提高系统可靠性。如PLC电源配电系统要配备冗余的UPS不间断电源,以排除停电对全线运行的不利影响。又如对电机的控制回路要进行继电器隔离,以消除外部负载对I/O模块的可能损坏。另外,系统设备要采用独立的接地系统,以减少杂波干扰。
SPI 2" PIPE SLEEVE 3-10 316/0 4403CR / TU-YU140093
GREENLEE 1/2" - 1/4" SLUG SWITCH DRAW STUD 502-S-51.2
SMITH metaL 2" SCH 10S PIPE SLEEVE CR316LW / ASTM A-403
UNKNOWN MFG * 304 REDUCER BUSHING * 2 X 3/8"
LEADER GASKET 1-1/2-3/600 SEAL GASKET ASME B16.21
STAR 2-3/4" X 1-5/8" GEAR CUTTING TOOL 40078175 *NIB*
MICHIGAN DRILL 1/8" x 2-1/2" TWIST DRILL BIT #650F *NEW* LOT OF 3
FESTO 13 PC. CYLINDER REPAIR KIT DZH-32-PPV-4 *NEW IN BOX*
1/8X3/8 END MILL 684
SA 3/4" BLACK STEEL TEE PIPE FITTING LOT OF 5
CGW 6X1/2X1-1/4 4456RPM CUTTING WHEEL AZ60-K8-4456
BROWN SHARPE HIGH SPEED 2 FLUTE 1-1/8" ENDMILL
ALOMA "B" SHIM SET 003-075 UP TO 5/8" BOLT SIZE
ROTOR TOOL S01PR6M-01 PISTOL GRIP PNEUMATIC NUTRUNNER
ACME BATH TAP 12L 1/4-5
2 FLUTED DOUBLE SIDED END MILL 5 1/4 X 7/8
1-3/8X1 HIGH SPEED 2 FLUTE CC ENDMILL
PIPE TAP 4 FLUTE 6 1/2" LENGTH
UNIOn TWIST 1/8" TAPER SHANK DRILL 42-10142 *NEW*
HS LSI USA MILLING CUTTER 2-1/2" X 1/4" X 7/8" NNB
MORSE 12-FLUTE 1-3/4 12-1/4" HS USA END MILL
MORSE STRAIGHT PIPE TAP 3/4"-14 5 FLUTE G F2295 NEW
JOHN CRANE SEAL ASSEMBLY TYPE 8-1 SIZE 4.250'' S739366 NIB