EMERSON A6110 Shaft Relative Vibration Monitor

EMERSON A6110 Shaft Relative Vibration Monitor

DESCRIPTION

The Shaft Relative Vibration Monitor is designed for extremely high reliability for the  plant’s most critical rotating machinery. This 1-slot monitor is used together with  other AMS 6500 monitors to build a complete API 670 machinery protection monitor.  Applications include steam, gas, compressors and hydro turbo machinery.

The main functionality of the Shaft Relative Vibration monitoring module is to  accurately monitor shaft relative vibration and reliably protect machinery by comparing  vibration parameters against alarm setpoints, driving alarms and relays.

Shaft relative vibration monitoring consists of a displacement sensor either mounted  through the bearing case, or mounted internally on the bearing housing, with the  rotating shaft being the target.

The displacement sensor is a non-contact sensor measuring shaft position and  movement. Since the displacement sensor is mounted to the bearing, the monitored  parameter is said to be shaft relative vibration, that is, shaft vibration relative to the  bearing case.

Transducer Inputs

Number of inputs:Two, independent or combined monitoring modes

Type of inputs:Eddy current, differential

Emerson sensor inputs:Part number: 6422, 6423, 6424, 6425

Isolation:Galvanically separated from power supply

Input resistance:>100 kΩ

Input voltage range:0 to -22 VDC

Input frequency range:

· Lower cutoff 1 or 5 Hz 

· Upper cutoff 50-2000 Hz adjustable

SPECIFICATION

· Two-channel, 3U size, 1-slot plug

·in module decreases cabinet space  requirements in half from traditional  four-channel 6U size cards 

· API 670 compliant, hot-swappable module 

· Remote selectable limit multiply  and trip bypass 

· Front and rear buffered and  proportional outputs,  0/4-20 mA output, 0-10 V output 

· Self-checking facilities include  monitoring hardware, power input,  hardware temperature, sensor,  and cable 

· Use with displacement sensors PR6422,  PR6423, PR6424, PR6425, and driver  CON 011/91, 021/91,041/91

Analysis

Measurement modes

· Hot configurable 

· Zero to peak 

· Peak to peak 

· Independent dual-channel or combined 

· dual-channel modes 

· Smax (combined) (DIN 45670A) 

· Smax peak to peak (combined) 

· (DIN 45670B, VDI 2059) 

· Smax 0 to peak (combined) (VDI 2059) 

· True S peak to peak Y. X (independent) 

· (API 670)

Analysis