简要说明：BENTLY牌的BENTLY 77448-01T产品：估价：2000，规格：77448-01T，产品系列编号：77448-01T

　　产品型号：BENTLY 77448-01T
产品功能：BENTLY 77448-01T

产品参数：BENTLY 77448-01T

控制系统简介
s7-400是大型可编程序控制器，由电源模板(ps)、中央处理单元(cpu)、信号模板(sm)、通讯处理器(cp)等有些构成。s7-400h系统是s7-400的冗余系统，通过将发作间断的单元主动切换到备用单元的方法完结系统的不间断工作。它可以通过本地机架与s7-400的i/o模件、通讯网关联接，也可以通过根据profibus-dp总线的et200m分布式i/o与s7-300的i/o模块、通讯网关联接，以完结进程控制、与其它控制系统通讯。
3500机械维护系统是一个全功能监测维护系统，其方案应用了最新微处理器技术。由1块或2块电源模块(3500/15)、结构接口模块(3500/20)、温度监测器模块(3500/60)、位移、速度、加速度监测模块(3500/42)、继电器模块(3500/32)、通讯网关(3500/92)等构成。3500/92通讯网关是3500系统首要通讯通道，是与其它系统通讯的桥梁。
通讯方案选择
通讯完结的方针是将3500中的15个温度点和6个压缩机外壳振荡点的值以及其报警、联锁情况送到s7-400h，由于通讯的数据量不大，选用modbus rtu协议。
s7-400h与3500之间通讯首要有两种方法：一是在s7-400h的本地机架上设备一个cp(通讯处理器)。s7-400h有两个冗余子系统，cp设备在其中一个子系统上，两个冗余的子系统都从该cp获得数据,并在两个一样的用户程序中进行计算。因而，就冗余系统方式中的信息处理而论，cp是联接到主cpu 仍是热备cpu并无多大关系。缺点是，当子系统出现缺点时，该子系统机架上的cp不再可用。另一种方法是，将cp设备在切换式i/o(et200m 分布式
i/o)上，该设备有一个有源板总线和一个冗余profibus-dp 从站接口模板im153-2，每个s7-400h子系统与et200m两个dp从接口中的一个相连。这么，某个s7-400h冗余子系统缺点，cp会切换到它的冗余火伴，可靠性高，而且经济。我们选用了该方案，通讯处理器选用cp341。

以下产品，低价供应：

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11-11-11-00 Transient Data Interface (TD

BENTLY NEVADA 3500 RACK WITH POWER SUPPLY

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BENTLY NEVADA 3500 RACK W/ POWER SUPPLY

MODULES 15/20/50/32/42M(4)/93 & I/Os

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BENTLY NEVADA 2155/00-06-03-00-01-11-11-

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BENTLY NEVADA TRANSIENT DATA MGR 2100/00

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BENTLY NEVADA 72201-02-02-05-01-01-01

USPP 7220102020501010

BENTLY NEVADA TDX NET TRANSIENT DATA

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BENTLY NEVADA 3300/35-11-01-01-00-00 USPP

3300351101010000

BENTLY NEVADA 3500/50 3500

BENTLY NEVADA 3500/50 Tachometer Module

BENTLY NEVADA 3300/16-04-01-01-00-00-00

3300/16040101000000

BENTLY NEVADA 3300-50-01-01-01-00 USPP

33005001010100

Bently Nevada 103928-02 Sampler Card

TDXnet PLC Transient Data Interface 5160

Bently Nevada 134652-01 Sampler TDXnet

PLC Transient Data Interface 137305-01

NEW BENTLY NEVADA 3500 PROCESS MONITOR

3500/62

BENTLY NEVADA 3300/50-02-01-00-00 USPP

33005002010000

BENTLY NEVADA 3300/50-01-01-01-02 USPP

33005001010102

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USPP 3300160201010102

BENTLY NEVADA 3500/64M NSPP 350064M

BENTLY NEVADA 3300/55-03-04-06-06-00-00-

05-00 USPP 3300550304060600

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USPP 3300160201010101

NEW BENTLY NEVADA 18745-03 5 & 8 MM

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NEW BENTLY NEVADA 18745-03 5MM PROXIMITY

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Bently Nevada Romis 7200 Chassis

NEW BENTLY NEVADA 3300/16-04-01-01-00-00

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DUAL THRUST MONITOR

BENTLY NEVADA 3300 RACK WITH POWER SUPPLY

AND MODULES -- 12 (1) /03 (1) /16 (4)

Bently Nevada Dual Accelerometer Monitor

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Bently Nevada Dual Vibration Monitor

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Rebuilt Bently Nevada Turbine Vibration

Monitoring System 3300 3300/06-0.3

BENTLY NEVADA 2201/02-02 USPP 22010202

BENTLY NEVADA 3500/93 System Display

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Bently Nevada Romis 7200 Chassis

BENTLY NEVADA 3500/42M NSFP 350042M

BENTLY NEVADA 3500/42 NSFP 350042

BENTLY NEVADA 3300/55-03-04-05-05-00-00-

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Bently Nevada 7200 Chassis with 4

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Bently Nevada - 3300/95 - Gas Generator

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Bently Nevada - 3300/25 - Dual

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(5731) Bently Nevada Transducer Velocity

Control Velomitor 330750-80

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Bently Nevada 3300/46-XX-02-01-00

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BENTLY NEVADA 3500/42M NSPP 350042M

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Module PWA 135799-01 C

Bently Nevada 3500/62 Process Variable

Monitor

Bently Nevada 3500/40M Proximitor Monitor

140734-01 & I/O Connection Module

BENTLY NEVADA 3300/16-03-02-00-00-00-00

NSPP 3300160302000000

Bently Nevada 3500/42M Proximitor/

Seismic Monitor NOV

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TDXnet PLC Transient Data Interface 3407

2201/02-02 Bently Nevada for Allen

Bradley 1771

NEW BENTLY NEVADA 3300-16-01-02-01-00-00

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