| Specifications : |
MODEL vbOnline : |
Remarks : |
| Analog Inputs |
Number of channels
|
4 to 32
|
Configuration in blocks of 4 |
| Simultaneous recordings |
Dual channel |
Any odd #channel with any
even #channel |
| Channel scan rate |
≤8s per channel pair |
Accel 1000 Hz 400 lines |
| Compatible sensors |
Accel, vel, displ, voltage o/p,
4-20 mA |
|
| DC-coupled ranges |
0 V to 20 V, -10 V to 10 V,
-20 V to 0 V |
Selectable to suit sensor type |
| AC-coupled ranges |
16 V peak-peak |
Allows for ± 8 V sensor
output swing |
Sensor drive current
|
4 mA @ 24 V |
Enable for ICP®type sensors |
| A to D conversion |
24 bits |
|
| Input impedance |
>100 kΩ |
|
| Analog Measurements |
|
| Measurement types |
Single value, time waveform,
spectrum |
|
| Quantities |
Accel, vel, displ, demod,
user-scaled |
User scaling for voltage and
4-20 mA sensors |
| Max value (Accelerometer) |
± 80 g, ± 100 mm/s (4 in/s),
± 10 mm (0.4 in) |
with 100 mV/g sensor |
| Max value (Vel. sensor) |
± 2000 mm/s (80 in/s) |
with 100 mV/in/s sensor |
| Max value (Displ sensor) |
± 2 mm (80 mil) |
with 100 mV/mil sensor |
| Spectrum Fmax values |
100 Hz to 40 kHz (6000 CPM
to 2400 kCPM) |
In 23 steps |
| Sampling rates |
256 Hz to 102.4 kHz |
In 23 steps |
| Dynamic range |
≥95 dB |
|
| Harmonic distortion |
Less than -70 dB typica |
Other distortions and noise
are lower |
| Accuracy |
± 1% (0.1 dB) |
For DC level and AC
measured at 100 Hz |
| AC Frequency response |
± 0.1 dB from 10 Hz to 15 kHz;
± 3 dB from 1 Hz to 40 kHz |
From value measured at
100 Hz
High freq response also
applies to DC ranges
Accel and velocity |
| Signal Processing |
| Number of spectral lines |
400, 800, 1600, 3200, 6400 |
3200 lines (8192 samples)
max for dual channel
recordings |
| Time waveform samples |
1024, 2048, 4096, 8192, 16384 |
|
| Window types |
Hanning, rectangular |
|
| Averaging types |
Linear, exponential, peak
hold, synchronous |
|
| Number of averages |
1, 2, 4, 8, 16, 32, 64, 128 |
|
| Overlap |
0, 12.5, 25, 37.5, 50, 62.5,
75, 87.5% |
|
| Demodulation bandwidths |
20 bandwidth options |
From 125 to 1250 Hz up to 16
to 20 kHz |
| Quickscan |
| Scan rate |
2 seconds per channel pair |
For DC-coupled sensors, no
integration (e.g. prox probes)þ |
| Measurement type |
5 seconds per channel pair
Average DC value or 10 Hz to
1 kHz overall |
For other sensor types
Accelerometer readings are
converted to velocity |
| Tachometer Inputs |
| Tachometer Inputs |
4 |
Multiplexed |
| Range |
0.5 Hz to 5000 Hz
(30 to 300 000) RPM |
Divided by number of pulses
per revolution |
| Recommended sensor |
Hall effect |
Also optical, laser and
Keyphasor® tach sensors |
| Power supply to sensor |
12 V |
Current limited by a
50 mA PTC |
| Input type |
Optically isolated,
accepts TTL |
|
| TTL inputs pulses |
2.5 V (2 mA) min, 12 V (20 mA)
max, off-state ‹0.8 V |
|
| Relay Outputs |
| Number |
4 |
|
| Type |
SPST, normally open |
|
| Voltage and current rating |
250 V AC or 30 V DC, 5 A |
|
| Controlled by |
Server |
User configurable, based on
alarms |
| Status Indicators |
| System status |
2 x LEDs |
One for power, one for
DSP status |
| Vibration status |
4 sets LEDs: red,
yellow, green |
Indicates alarm state, user
configurable |
| Relay status |
4 x LEDs |
Indicates if each relay is
energized |
| Comms and Power |
| Network comms |
Ethernet v2.0, IEEE 802.3,
TCP/IP, 10/100baseT, |
Auto senses 10/100 Mbps and
half/full duplex |
Network connection,
link speed |
RJ45 socket 256 kbps
(optimum), 2400 bps (min) |
Via any commercially
available link |
| Diagnostic comms |
RS232 @ 230 kbaud,
RJ12 socket |
Auto-baud at power up 57.6
to 230 kbaud |
| Power supply |
250 mA @ 9 V to 36 V DC |
|
| Mechanical |
| Mounting |
Standard 35 mm DIN rail |
For installation in enclosed
control cabinet |
| Size |
308 mm x 130 mm x 45 mm |
(60 mm including DIN rail) |
| Optional sealed housing |
IP 65 / NEMA 4 |
|
| Environmental |
| Temperature range |
-10 °C to 60 °C (14 to 140) °F |
|
| Humidity |
95% RH non-condensing |
|
| EMC |
EN61326 |
Emissions and immunity |
| Analysis Software |
| Name |
Ascent Level 3 |
|
| Compatible portables |
vbSeries® |
|
