Vibration unit for VVK-331 Control and Alarm Device
Vibration unit is used for measuring RMS values of vibration speed, displaying them on the dial test indicator, emergency and warning alarm signaling in case vibration velocity threshold is exceeded, channel failure alarm signaling in case voltage threshold is exceeded.
The vibration unit is used together with the Vibration unit of the VVK-331 Control and Alarm Device for measuring vibration of rotor machines and mechanisms in industrial conditions in various industries.
Elements
· DC operational amplifier;
· Square-law detector;
· Automation scheme;
· Display and control scheme.
Functions
· Conversion of the vibration gauge’s output signal, proportional to the vibration velocity, to a signal proportional to the vibration speed;
· Providing galvanically isolated electric current signal of the vibration speed for recording devices;
· Calculating RMS values of the electrical signal proportional to the vibration speed;
· Generating control signals for alarm circuits (warning, emergency and channel failure);
· Switching operating modes, data display and alarm signaling;
· Operating mode - continuous, round-the-clock.
Brief specification
|
№ |
Parameter |
Value |
Notes |
|---|---|---|---|
|
1. |
Measurement range for the vibration speed RMS values, mm/s |
from 1 to 10 from 3 to 30 |
Switchable |
|
2. |
Operating frequency range, Hz |
from 20 to 1,000 |
|
|
3. |
Electric Current output signal range, proportional to vibration speed, mA |
from 0.5 to 5 |
under the load from 0.1 to 2.5 kiloohm |
|
4. |
Automatics relay active load switching parameters |
|
|
|
AC voltage, V |
220 |
|
|
|
Electric current, A, max |
0.1 |
|
|
|
5. |
Power |
DC +24V, DC±15V |
|
|
6. |
Dimensions (length, width, height), mm |
460´200´120 |
|
|
7. |
Weight, kg, max |
2.5 |
|
Operating conditions
Temperature from + 5 °С to + 40 °С.
Relative humidity 80% (at the temperature of +25°С).
Average service life is at least 10 years.
Power unit for VVK-331 Control and Alarm Device
The power unit is used for providing DC power for vibration units and vibration gauges.
The power unit is used together with the Vibration unit of the VVK-331 Control and Alarm Device for measuring the vibration of rotor machines and mechanisms in industrial conditions in various industries.
Elements
· Transformer
· Rectifier bridge
· Filter
· Voltage stabilizer.
Functions
· Providing unstabilized voltage ± 24V;
· Providing stabilized voltage ± 15V;
· Operating mode - continuous, round-the-clock.
Brief specifications
|
№ |
Parameter |
Value |
Notes |
|---|---|---|---|
|
1. |
Channels ± 24В |
|
Unstabilized |
|
Number of channels |
2 |
||
|
Output voltage tolerance, V, max |
± 4 |
||
|
Max. output voltage ripple, mV, max |
100 |
||
|
Max. electric current load, mA |
200 |
||
|
2. |
Channels ± 15В |
|
Stabilized |
|
Number of channels |
3 |
||
|
Output voltage tolerance, V, max |
± 1 |
||
|
Max. output voltage ripple, mV, max |
50 |
||
|
Max. electric current load, mA |
200 |
||
|
3. |
Power |
AC 220V±10%, 50 Hz |
|
|
4. |
Consumption current, mA, max |
550 |
|
|
5. |
Power unit’s power consumption at maximum load, W, max |
120 |
|
|
6. |
Dimensions (length, width, height), mm |
460´80´240 |
|
|
7. |
Weight, kg, max |
4.4 |
|
Operating conditions
Temperature from + 5 °С to + 40 °С.
Relative humidity 80% (at the temperature of +25°С).
Average service life is at least 10 years.