BENTLY NEVADA 3300/03

BENTLY NEVADA    3300/03   System Monitor 

SYSTEM POWER-UP INHIBIT

The System Monitor provides a Power-up Inhibit function. This function allows each monitor to inhibit its alarms during power-up or whenever a system supply voltage falls below its operating level. After power-up, the inhibit function remains active for approximately 2 seconds.

RACK INHIBIT

When activated by a external contact closure this function places all monitors in bypass, disables all alarms, zero scales all outputs, and de-energizes the system OK relay. The connections for this function are located on the power input module (PIM) at the rear of the rack.

SUPPLY VOLTAGES OK

Seven LEDs located behind the front panel of the System Monitor are ON to indicate the voltage supplies are functioning. The voltage supplies are +VRH, +VRL, +7.5V, +5V, REF, -7.5V, and -VT.There is a green LED (SUPPLIES OK) on the front panel of the System Monitor. When this LED is on all of the voltage supplies are functional.

SYSTEM RESET

The System Monitor provides the ability to cause a System Reset. Closing external contacts through terminals on the PIM or pressing the RESET switch on the front panel will cause a System Reset.

TRIP MULTIPLY

The most common use of this function is to prevent unwanted monitor alarms during certain conditions of machine operation. In the operation of some machinery, it is impossible to avoid some periods of "higher than normal" vibration. Examples include startup and coastdown,especially if the operating speed is above rotor system balance resonances ("critical speeds"),structural and other resonances, and changes in machine load or other operating conditions.

The Trip Multiply function causes the monitor alarm setpoints (both Alert and Danger) to increase by a fixed amount, either two times (2X) or three times (3X), according to the ordering option. Only those monitors ordered with this option will be affected. The Trip Multiply function is performed in the System Monitor, but is an ordering option for each monitor. It must be specified at the time of order placement and be installed at the factory.

Trip Multiply is activated by contact closure on the PIM. A red LED on the System Monitor front panel indicates that the Trip Multiply function is active.

OK RELAY

The purpose of this relay is to provide a means to annunciate a problem that is detected with any transducer system connected to the rack. The OK Relay is connected to the OK Circuit of every  monitor in the rack. The OK Circuit continuously checks the condition of the transducer(s) associated with that monitor. If the circuit detects a transducer problem, the OK LED on the front of the affected monitor goes off and a relay drive signal is sent to the OK Relay in the System Monitor.

The OK Relay is located on the System Monitor PIM, is normally energized, and is a single-pole,double-throw (SPDT) relay. Since it is normally energized, the relay also can be used to annunciate when mains power to the rack is lost or interrupted. Either a system power-up inhibit signal from the System Monitor or a not OK signal from any monitor in the rack will cause the OK Relay to change state.

ALARM SETPOINT ADJUST

The System Monitor has two switches on the front panel that adjust alarm setpoint levels on each monitor. One switch is for upscale adjustments, and the other switch is for downscale adjustments.

DATA INTERFACE

The System Monitor supports the following Bently Nevada data interfaces: Dynamic Data Manager (DDM), Transient Data Manager® (TDM), Serial Data Interface (SDI), Dynamic Data Interface (DDI) and Transient Data Interface (TDI). The SDI and DDI are options of the System Monitor and reside within the System Monitor slot of the rack. DDM, TDM and TDI are external data interfaces which gain access to the rack through the PIM. There is an external version of the SDI and DDI which connects to the PIM. For more information about these products consult a Bently Nevada sales representative.

Keyphasor® TRANSDUCERS

The System Monitor receives input from four Keyphasor® transducers through terminals on the PIM. Two of the Keyphasor® transducers are available to the monitors within the rack. All four of the Keyphasor® transducers are available to the Dynamic Data Interface (DDI). Buffered Keyphasor® signals are also available from the coaxial connectors on the front panel. The System Monitor also provides short-circuit protected Keyphasor® transducer power.

STATIC DATA BUS BUFFER

The System Monitor multiplexes signals from either the DDM or TDM to select static data from the monitors. The System Monitor buffers the static data signals sent from the monitor to the DDM or TDM.

Other models: 3300/01，3300/03 , 3300/05 , 3500/10 , 3300/12 , 3300/15 , 3300/16 , 3300/20, ,3300/25 , 3300/36，3300/40 , 3300/45 ,3300/48， 3300/50 , 3300/52, 3300/53， 3300/55 , 3300/65……

BENTLY NEVADA 3300/03系统监视器
系统加电抑制
系统监视器提供加电抑制功能。此功能允许每个监视器在通电期间或系统电源电压降至其工作水平以下时抑制其警报。通电后，抑制功能保持激活状态约2秒。
机架抑制
当外部触点闭合激活时，此功能将所有监测器置于旁路，禁用所有警报，对所有输出进行零刻度，并使系统OK继电器断电。此功能的连接位于机架后部的电源输入模块（PIM）上。
电源电压正常
系统监视器前面板后面的七个LED亮起，表示电源正常工作。电源电压为+VRH、+VRL、+7.5V、+5V、REF、-7.5V和-VT。系统监视器的前面板上有一个绿色LED（电源正常）。当此LED亮起时，所有电压电源都正常工作。
系统重置
系统监视器提供了导致系统重置的能力。通过PIM上的端子闭合外部触点或按下前面板上的RESET开关将导致系统重置。
旅行倍增
此功能最常见的用途是在机器运行的某些条件下防止不必要的监视器报警。在某些机械的运行中，不可避免地会出现一些“高于正常”的振动。示例包括启动和滑行，特别是如果运行速度高于转子系统平衡共振（“临界速度”）、结构和其他共振，以及机器负载或其他运行条件的变化。
跳闸倍数功能使监测器报警设定点（警报和危险）增加固定量，根据订购选项，增加两倍（2X）或三倍（3X）。只有订购了此选项的显示器才会受到影响。跳闸倍数功能在系统监视器中执行，但是每个监视器的订购选项。必须在下单时指定并在工厂安装。
PIM上的触点闭合可激活Trip Multiply。系统监视器前面板上的红色LED指示跳闸倍增功能已激活。
OK继电器
该继电器的目的是提供一种方法，通知连接到机架的任何传感器系统检测到的问题。OK继电器连接到机架中每个监视器的OK电路。OK电路持续检查与该监测器相关的传感器的状况。如果电路检测到传感器故障，受影响监测器前部的OK LED熄灭，继电器驱动信号发送到系统监测器中的OK继电器。
OK继电器位于系统监视器PIM上，通常通电，是单极双掷（SPDT）继电器。由于继电器通常通电，因此当机架的主电源丢失或中断时，继电器也可用于发出信号。来自系统监视器的系统加电禁止信号或来自机架中任何监视器的非OK信号都会导致OK继电器改变状态。
报警设定点调整
系统监视器前面板上有两个开关，用于调整每个监视器上的报警设定点级别。一个开关用于高档调整，另一个开关则用于低档调整。
数据接口
系统监视器支持以下Bently Nevada数据接口：动态数据管理器（DDM）、瞬态数据管理器®（TDM）、串行数据接口（SDI）、动态数据接口（DDI）和瞬态数据接口（TDI）。SDI和DDI是系统监视器的选项，位于机架的系统监视器插槽内。DDM、TDM和TDI是通过PIM访问机架的外部数据接口。有一个外部版本的SDI和DDI连接到PIM。有关这些产品的更多信息，请咨询Bently Nevada销售代表。
Keyphasor®传感器
系统监视器通过PIM上的端子接收来自四个Keyphasor®传感器的输入。机架内的监测器可使用两个Keyphasor®传感器。所有四个Keyphasor®传感器均可用于动态数据接口（DDI）。前面板上的同轴连接器也提供缓冲Keyphasor®信号。系统监视器还提供短路保护的Keyphasor®传感器电源。
静态数据总线缓冲器
系统监视器对来自DDM或TDM的信号进行多路复用，以从监视器中选择静态数据。系统监视器缓冲从监视器发送到DDM或TDM的静态数据信号。

其他型号： 3300/01，3300/03 , 3300/05 , 3500/10 , 3300/12 , 3300/15 , 3300/16 , 3300/20, ,3300/25 , 3300/36，3300/40 , 3300/45 ,3300/48， 3300/50 , 3300/52, 3300/53， 3300/55 , 3300/65……

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