EN2000A3/A3R Speed/Reversion Monitoring& Protection Instrument
Adobe Systems

 

    The EN2000A3（A3/R）is a speed monitoring and protection instrument. It is used to measure rotational speed and zero(reverse) speed of rotating machinery, to monitor rotational speed variation caused by faults and to protect the unit.

 

    EN2000A3 is applied to various rotating machinery, such as turbine generator, gas turbine, hydro generator, compressor, motor, fan, centrifugal machine, etc.; EN2000A3/R can be used by rotating machinery which might produce reverse rotational speed.
 
Function Characteristics

The number of teeth(1-255) can be setup on the instrument and monitor the rotational speed of gear, keyslot with different teeth.

The instrument has a “blackbox” database to recall historical maximum value to provide reliable information for fault analysis.

The alarm point and alarm delay time can be setup using software to minimize false alarms and failed alarms.

RS-485 communication interface is provided and multi-machine communication is supported, facilitating the networked management of multiple meters.

The parameter setup or function selection of the meter can be undertaken using the buttons on the front panel or by communication with the central server computer, and password is needed for administration authority.


Main technological specification

Channel Number

1 Channel

Sensor Type

Eddy current sensor, magnetic resistance sensor, Hall sensor, photoelectric sensor, and other standard sensors

Input Impedance

>50KΩ

Rotational Speed Range  

0～99999rpm

Alarm Points

2 alarm set points  

Alarm setting point：0～100％ FS 

Alarm Delay ：0～9 Seconds

Alarm reset: self-locking and automatic reset

Display Resolution   

0.1 Character

Output Mode

Output mode: Three transducer modes of 0-10mA, 4-20mA, and 0-20mA can be chosen through programming. If a sensor is in a not “OK” status, the transducer output will be 2mA.

Relay Capacity

250VAC/1A,30VDC/2A

Working Temprature

0～50℃

Relative Humidity

≤85% to avoid condensation

Working Power

85～265VAC/50～60Hz或24DVC

Power Dissipation

<10W

External Dimension

160mm(Width)×80mm(Height)×120mm(Depth)



Classification