Vibration Signal Converter (VM-90D Series)

 

  • High performance and low cost
  • Small size, attachable with DIN rail
  • Switchover Measurement Mode, switchover Measurement Range
    ● Acceleration / Velocity / H Function / H Function CF *
    (only for VM-80DA)
    ● Velocity / Displacement (VM-90 DV / DVL)
  • Substantial basic functions
    One step alarm output
    DC4 ~ 20mA level output
    AC±5V monitor output
    Level indication

* CF : Crest Factor = Peak Factor

Specifications

Common Specifications of Main Units

Classification Item Specification
Signal Output Converted Output DC4-20mA、1 Output (Response time 3 sec*1
Monitor Output AC±5V FS±5%(for quick check)*3
1-5VDC FS±5%(option)
Alarm Output Alarm Contact 1 Step 1a Contact AC 125V、 DC 30V-1A (Resistive Load)
Alarm Level Setting Extent 0~100% of Full Scale Arbitrary Setting (in 1% Step)*2
Alarm Action Detecting the set Alarm level ,activates at the end of the Delay time
(reset automatically)
Initial Delay time setting 5sec (3~99sec: 1 sec Step)
Indication Main Unit Panel
Indicator
Red 7 segment LED (4 Digit Indication)
Vibration Amplitude 5 Ranges for each selected function
Blinks for over 120% of Full Scale
Alarm Setting (%) 1~100% for Full Scale*2
Pickup Sensitivity 80~120% for Standard Sensitivity
Ambient
Environment
Ambient Temperature -5~55℃
Ambient Humidity 30~90%RH(No condensation)
Others Supply Voltage AC100V±10% 50/60Hz±2Hz
Installation On the Wall or DIN Rail (Din Rail contact section is demountable)On
Terminal Board M3.5 screws on the Back Panel
Outward Case Material Plastic
Size ・ Mass W50×H80×D127mm Approx. 300g
*1:Changeable by the customized software
*2: Setting of 0% cancels the alarm function.
*3:Usable for quick check of the waveforms

(1)Specifications of VM-90 DA (Applicable to Pre-amplifier build-in type Pickups)*6
(VP-A51 IW / VP-A 4345Ⅰ)

Measurement Mode Item Specification
Acceleration*5 Measurement Range 10, 20, 50, 100, 200(m/s2rms)
Frequency Range 10~4kHz±1dB
10~10kHz+1dB、-3dB
Velocity*5 Measurement Range 5, 10, 20, 50, 100(mm/s rms)
Frequency Range 10~1kHz+1dB、-2dB
H Function*5 Measurement Range 10, 20, 50, 100, 200(m/s2rms)
Frequency Range DC~1kHz(Envelope detection of 2kHz~15kHz)
H Function CF*5 Measurement Range 5, 10, 20, 50, 100
Frequency Range DC~1kHz(for peak/rms of H Function)
*5:Changeover of the measurement mode is possible by the switch located on the front panel.
*6:Designate the type of the main unit on placing order

(2)VM-90 DV Specifications (Using Medium Frequency Pickups)*6
(VP-90 VC / VP-90 VD)

Mode Item Specification
Velocity*5 Measurement Range 5,10,20,50,100(mm/s rms)
Frequency Range 10~1kHz+1dB
Displacement*5 Measurement Range 50,100,200,500,1000(μmp-p)
Frequency Range 10~500Hz±1dB
*5:Changeover of the measurement mode is possible by the switch located on the front panel.
*6:Designate the type of the main unit on placing order

(3)VM-90 DV Specifications (Using Low Frequency Pickups)*6
(VP-91 VC / VP-91 VD / VP-92 VC / VP-92 VD)

Mode Item Specification
Velocity*5 Measurement Range 5,10,20,50,100(mm/s rms)
Frequency Range 5~500Hz+1dB
Displacement*5 Measurement Range 50,100,200,500,1000(μmp-p)
Frequency Range 5~500Hz±1dB
*5:Changeover of the measurement mode is possible by the switch located on the front panel.
*6:Designate the type of the main unit on placing order

Selection of Vibration Pickup

■For malfunction detection of bearings
Piezoelectric Accelerometer(Pre-amplifier build-in type)
(1)VP-A51IW, VP-A4345I
■For monitoring of velocity or displacement of 1 kHz or lower
Electrodynamic Velocity Pickup(Medium frequency type)
(2)VP-90 VC, VP-90 VD
■For monitoring of displacement or velocity of 10Hz or lower
Electrodynamic Velocity Pickup(Low frequency type)
(3)VP-91 VC, VP-91 VD(Horizontal dedicated)
VP-92 VC, VP-92 VD(Vertical dedicated)

Composition・Block Diagram

Composition

Outward SizeBlock Diagram