Dwyer VBS - Manual

Bulletin PC-VBS
The Series VBS Vibration Switch is small, compact, and uses two easy
set up dials that adjust the maximum RMS velocity set point and false trip
time delay. The Series VBS is intended to continuously monitor the
changes in a machine’s vibration level. The VBS takes real-time RMS
vibration input and provides an analog output of velocity, as well as a
switching output when an alarm value is exceeded.
SAFETY INSTRUCTIONS
• Please read the product description prior to setup of the unit. Ensure
that the product is suitable for your applications without any restrictions.
• The unit conforms to the relevant regulations and EC directives.
• Improper or unintended use may lead to malfunctions of the unit or to
unwanted effects in your application.
• Installation, electrical connection, setup, operation and
maintenance of the unit must only be carried out by qualified personnel
authorized by the machine operator.
INSTALLATION
1. Mount only in a thick housing wall.
2. Ensure a safe vibration transmission and the signal direction is correct,
and allow no elastic intermediate layers. See Figure 1.
3. Tighten the sensor with a tightening torque of 15 Nm.
Specifications - Installation and Operating Instructions
Series VBS Vibration Switch
SPECIFICATIONS
Housing Material: PBT, PC, FPM, and 316 SS.
Temperature Limit: -22 to 221°F (-30 to 105°C).
Accuracy: < ±3%.
Measuring Range: 0 to 50 mm/s.
Connections: M12 connector.
Enclosure Rating: NEMA 6 (IP67).
Electrical Rating: 18 to 32 VDC.
Mounting Orientation: All.
Nonlinearity: < ±0.25% of span.
Switch Output Range: VBS-1: 0 to 25 mm/s Vrms;
VBS-2: 0 to 50 mm/s Vrms.
Analog Output Range: 10 to 1000 Hz.
Output Signal: 4 to 20 mA.
Switch Time Delay: 1 to 60 seconds.
Switch Type: PNP normally open (500 mA max).
Repeatability: < 0.5%.
Weight: 0.25 lb (0.114 kg).
Agency Approval: CE.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
1-1/32˝
[25.91]
M8 CONNECTION
(316 SS)
M12X1
4 PIN CONNECTION
1-1/16˝
[26.87]
2-1/2˝
[63.67]
2-7/8˝
[73.05]
VBS-X
sec
sec
Delay Set 10 15
POWER CKING
mm/s
inch/s
RMS Set
Analog
Out 4...
20 mA
500 mA
pnp
18...
32
VDC
Figure 1