Dwyer instruments, inc – Dwyer VBS User Manual
Page 2
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]
©Copyright 2014 Dwyer Instruments, Inc.
Printed in U.S.A. 4/14
FR# R6-443973-00 Rev. 1
OPERATION AND DISPLAY
1. Locking ring
2. Setting rings (manually adjustable after unlocking)
3. LED green: voltage supply
4. M8 process connection
5. LED yellow: lights when switching threshold and time delay exceeded.
See Figure 2.
WIRING
The unit must be connected by a qualified electrician. The national and
international regulations for the installation of electrical equipment must be
adhered to. See Figure 3.
RMS Set
Effective value of the switching threshold, defining the limit value of the
vibration velocity.
Delay Set
Time in seconds during which the limit value must be effectively above the
switching threshold (RMS Set) to activate the switching output (normally
closed pin 4).
Output Behavior
1. Time delay after the switching threshold has been exceeded
2. Time delay after the switching threshold has been exceeded
3. Switch-off
4. Switching threshold
5. Delay
Vss = Vibration velocity
t = time
Implementation of the Time Delays
The time delay starts when the defined switching threshold is exceeded (1)
/ (2). The time delay is cancelled when the value falls below the switching
threshold (without switch-off). The switch-off is triggered when the switching
threshold is exceeded during a full time delay (3).
MAINTENANCE/REPAIR
Upon final installation of the Series VBS no routine maintenance is
required. The Series VBS is not field serviceable and should be returned if
repair is needed. Field repair should not be attempted and may void
warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sales” in our catalog and on our website.
Contact customer service to receive a Return Goods Authorization number
before shipping the product back for repair. Be sure to include a brief
description of the problem plus any additional application notes.
Figure 3
Figure 2
Figure 3