在室内供暖时,为了使暖气管道中没有空气,就必须使管道中的水保持一定的压力,否则供暖系统不能正常工作。我们选用 PLC,配以 不同功能的传感器,根据管道中的压力,通过变频器控制泵组的转速,使管道中的压力始终保持在合适的范围,并配上过电流、过电压、过 载、断水超压设定的保护装置。系统中有两套相同的装置,实现一供一备。另外,PLC 通过扩展的 I/O 接口实现监测、控制和通讯等功能。GIDDINGS & LEWIS M.1016.9329 R0
GIDDINGS & LEWIS TRUEVIEW 3390TH
Giddings & Lewis Pic900 502-03605-00R2
Giddings & Lewis,502-03499-00
Giddings & Lewis 501-03152-00
Giddings & Lewis 501-09535-00 502-02122-00
GIDDINGS LEWIS 401-34439-20, HSM630
Giddings & Lewis 501-03111-00
Giddings & Lewis M.1008.0311, 501-0406-00
Giddings Lewis Centurion DSM007 401-56451-00
GIDDINGS & LEWIS 502-03605-00R2
GIDDINGS LEWIS MACHINE INTERFACE 501-04317-00 502-03431-10
Giddings & Lewis 871-21003-03
Giddings & Lewis m10171606 502-18011-03
Giddings & Lewis 214783, M.1002.5087
Giddings & Lewis 501-02984-01
GIDDINGS & LEWIS 502-03418-00 501-04304-00
Giddings & Lewis 501-02982-00
Giddings & Lewis 501-03122-00
Giddings & Lewis , 503-19770-10
GIDDINGS & LEWIS 501-03377-00_502-02918-00
GIDDINGS & LEWIS 502-03839-02
Giddings & Lewis 501-03653-01
Giddings & Lewis NSM4214 401-30238-00
Giddings & Lewis .1016.9291 502-03810-03
Giddings & Lewis Plate, M.1200.1206
Giddings & Lewis 501 03168 00
GIDDINGS & LEWIS 502-02823-00,501-03230-00
Giddings & Lewis M.1301.8270
GIDDINGS & LEWIS MASTER RACK AC INPUT MODULE 502-03813-03
Giddings & Lewis Wiper, M.1903.1960
Giddings & Lewis PiC0 PS05
Giddings & Lewis Spot Light, M.1002.3764
Giddings 502-03674-00
Giddings & Lewis 502-03605-00R3
GIDDINGS & LEWIS PIC900,502-03548-00R4
GIDDINGS & LEWIS HSM 620