MKT. #8870001 - REV M
MFG. #5400736 - 7/99
PAGE 1 OF 6
PRINTED IN USA
EVD-S
ELECTRONIC VIBRATION DETECTOR
SYSTEM
EVD-C
EVD-P
AMPLIFIER
PICKUP UNITS
UL LISTED
Dimensions:
12 1/4"H x 8 3/8"W x 3 1/8"D
31,1cm H x 21,3cm W x 7,9 cm D
Weight:
8 lbs., 3,6 kg.
Enclosure:
18 Gauge - Cold Rolled Steel
Power Input:
12VAC, 20VA, 60Hz
Operating Voltage:
6VDC
Typical Current:
20mA
Alarm Current:
25mA
Contact Ratings:
Alarm Relay and Tamper Switch
1.0 Amp at 28VDC
0.1 Amp at 130VDC
Optional Equipment:
An APC, Accumulator Pulse
Counter, is available for use in applications where
extraneous signals may cause false alarms. Mounts in
EVD-C housing. (See Bulletin No. 5400740.)
GENERAL INFORMATION
The EVD-S, Electronic Vibration Detector System, is listed
by Underwriters Laboratories, Inc. for primary protection of
Mercantile or Bank, safe or vault and supplementary protec-
tion of interior units such as file cabinets, display cases,
walls and ceilings. The System must be used with an
appropriate UL listed control unit.
EVD-C PROCESSOR UNIT
The amplifier unit, model EVD-C, provides SPDT alarm
contacts for connection into the alarm protective circuit. The
EVD-C is housed in a metal cabinet protected by a cover
tamper and a housing vibration detector. The housing
detector is provided with a housing sensitivity control.
A low voltage plug-in transformer and a regulated battery
charging circuit maintain the standby battery at a fully
charged state.
An auxiliary output is provided to power the APC-B (accu-
mulator option) when required. The battery provides in
excess of 80 hours standby operation even if the maximum
6VDC auxiliary output is utilized.
The EVD-C provides an AC on indicator (green LED), a test
button, and an alarm indicator (red LED) for subscriber
testing of the EVD-S System. Terminals are also provided
for connection of a remote test unit, Model PTU-B, and/or
connection of dry contacts from any Underwriters Laborato-
ries Listed central station test unit.
From 2 to 15 pickup units may be connected to the EVD-C in
a series supervised pickup loop. The supervision of the pickup
loop is maintained by a factory adjusted DC differential circuit,
which makes a compromise attempt of the pickup loop more
difficult.
EVD-P PICKUP UNIT
Model EVD-P pickup units detect sound vibrations in the
protected material. These signals are fed to the amplifier
unit where the pickup loop sensitivity control determines the
signal level necessary to create an alarm condition. A Model
EOLR resistor assembly must be installed in the last EVD-
P.
The pickup units are housed in a 4 1/4"H x 3"W x 1 1/4"D
metal enclosure with cover and back tampers and are to be
mounted with the speaker opening against the protected
material.
Potter Electric Signal Company
•
2081 Craig Road, St. Louis, MO, 63146-4161
•
Phone: 800-325-3936/Canada 888-882-1833
•
www.pottersignal.com
