產品參數(shù)：BENTLY 77448-01T
控制系統(tǒng)簡介
s7-400是大型可編程序控制器，由電源模板(ps)、中央處理單元(cpu)、信號模板(sm)、通訊處理器(cp)等有些構成。s7-400h系統(tǒng)是s7-400的冗余系統(tǒng)，通過將發(fā)作間斷的單元主動切換到備用單元的方法完結系統(tǒng)的不間斷工作。它可以通過本地機架與s7-400的i/o模件、通訊網關聯(lián)接，也可以通過根據(jù)profibus-dp總線的et200m分布式i/o與s7-300的i/o模塊、通訊網關聯(lián)接，以完結進程控制、與其它控制系統(tǒng)通訊。
3500機械維護系統(tǒng)是一個全功能監(jiān)測維護系統(tǒng)，其方案應用了最新微處理器技術。由1塊或2塊電源模塊(3500/15)、結構接口模塊(3500/20)、溫度監(jiān)測器模塊(3500/60)、位移、速度、加速度監(jiān)測模塊(3500/42)、繼電器模塊(3500/32)、通訊網關(3500/92)等構成。3500/92通訊網關是3500系統(tǒng)首要通訊通道，是與其它系統(tǒng)通訊的橋梁。
通訊方案選擇
通訊完結的方針是將3500中的15個溫度點和6個壓縮機外殼振蕩點的值以及其報警、聯(lián)鎖情況送到s7-400h，由于通訊的數(shù)據(jù)量不大，選用modbus rtu協(xié)議。
s7-400h與3500之間通訊首要有兩種方法：一是在s7-400h的本地機架上設備一個cp(通訊處理器)。s7-400h有兩個冗余子系統(tǒng)，cp設備在其中一個子系統(tǒng)上，兩個冗余的子系統(tǒng)都從該cp獲得數(shù)據(jù),并在兩個一樣的用戶程序中進行計算。因而，就冗余系統(tǒng)方式中的信息處理而論，cp是聯(lián)接到主cpu 仍是熱備cpu并無多大關系。缺點是，當子系統(tǒng)出現(xiàn)缺點時，該子系統(tǒng)機架上的cp不再可用。另一種方法是，將cp設備在切換式i/o(et200m 分布式
i/o)上，該設備有一個有源板總線和一個冗余profibus-dp 從站接口模板im153-2，每個s7-400h子系統(tǒng)與et200m兩個dp從接口中的一個相連。這么，某個s7-400h冗余子系統(tǒng)缺點，cp會切換到它的冗余火伴，可靠性高，而且經濟。我們選用了該方案，通訊處理器選用cp341。
以下產品，低價供應：
ently Nevada 2155/00-10-03-00-01-11-11-
11-11-11-00 Transient Data Interface (TD
BENTLY NEVADA 3500 RACK WITH POWER SUPPLY
AND MODULES 20/50/32/42M(3)/93
BENTLY NEVADA 3500 RACK W/ POWER SUPPLY
MODULES 15/20/50/32/42M(4)/93 & I/Os
BENTLY NEVADA 3500 RACK W/ POWER SUPPLY
MODULES 15/20/50/32/42M(4)/93 & I/Os
BENTLY NEVADA 2155/00-06-03-00-01-11-11-
11-00-00-00 USPP 2155000603000111
BENTLY NEVADA TRANSIENT DATA MGR 2100/00
-01-07-01-00
BENTLY NEVADA 3300/16-02-01-03-00-00-02
WITH 81564-01 NEW 330016020103000002
BENTLY NEVADA 3300/35-11-01-01-00-00 NSPP
3300351101010000
BENTLY NEVADA 72201-02-02-05-01-01-01
USPP 7220102020501010
BENTLY NEVADA TDX NET TRANSIENT DATA
INTERFACE # 2155100-05-03-05-01-11-11-10
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
BENTLY NEVADA 3300-16-02-01-01-01-02-00
USPP 3300160201010102
BENTLY NEVADA 3500/64M NSPP 350064M
BENTLY NEVADA 3300/55-03-04-06-06-00-00-
05-00 USPP 3300550304060600
BENTLY NEVADA 3300-16-02-01-01-01-01-00
USPP 3300160201010101
NEW BENTLY NEVADA 18745-03 5 & 8 MM
PROXIMITY SENSOR 7200 D327409
NEW BENTLY NEVADA 18745-03 5MM PROXIMITY
SENSOR 7200 D327399
Bently Nevada Romis 7200 Chassis
NEW BENTLY NEVADA 3300/16-04-01-01-00-00
-00 DUAL VIBRATION XY/GAP MONITOR
NEW BENTLY NEVADA 3300/20-02-01-03-00-00
DUAL THRUST MONITOR
BENTLY NEVADA 3300 RACK WITH POWER SUPPLY
AND MODULES -- 12 (1) /03 (1) /16 (4)
Bently Nevada Dual Accelerometer Monitor
Model 3300/25-03-06-01-00-02-00 New
Bently Nevada Dual Vibration Monitor
Model 3300/15-02-01-00-00-00-00- NIB
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
Factory Sealed
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-
07-00 USPP 3300550304050501
BENTLY NEVADA 3300/20-01-01-02-00-00 USPP
3300200101020000
Bently Nevada 7200 Chassis with 4
Vibration Monitors and 2 Dual Probe
Monitors
Bently Nevada - 3300/95 - Gas Generator
Filter Module / Vibration Monitor
Bently Nevada - 3300/95 - Power Turbine
Filter Module / Vibration Monitor
Bently Nevada - 3300/25 - Dual
Accelerometer Monitor
(5731) Bently Nevada Transducer Velocity
Control Velomitor 330750-80
Bently Nevada 3300/50-03-01-00-00
Tachometer
Bently Nevada 3300/46-XX-02-01-00
Differential Expansion Module
BENTLY NEVADA 3500/42M NSPP 350042M
Bently Nevada 3500/93 Display Interface
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
Bently Nevada 105401-02 Sampler Card
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
-01 DUAL VIBRATION XY GAP MONITOR
