SCS 724 Plus, Installation, Operation And Maintenance Manual

Page: 1 / 7

TB-9098 Page 1 of 7
© 2020 DESCO INDUSTRIES INC
Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332
East: (919) 718-0000 | West: (909) 627-9634 • Website: StaticControl.com
April 2020
Description
The SCS 724 Plus Workstation Monitor continuously
monitors the path-to-ground integrity and body voltage
of two operators, as well as the path-to-ground integrity
for one conductive or dissipative worksurface. The
724 Plus Workstation Monitor eliminates the need for
periodic testing and record keeping of wrist straps.
The 724 Plus Workstation Monitor is designed with
digital signal processing technology for true continuous
monitoring (versus pulsed or intermittent) of wrist strap
functionality (path-to-ground and presence of two 1
megohm resistors) and operator safety according
to accepted industry standards. It is unaffected
by capacitance variations from personnel or the
environment. Digital signal processing technology uses
dual-wire wrist straps to apply a low test voltage of
0.40 V onto the operator for the handling of sensitive
components.
The 724 Plus Workstation Monitor features operator
body voltage detection. It will alarm if the operator
generates or comes in contact with voltage that would
be dangerous to an ESD susceptible item. Each 724
Plus Workstation Monitor is calibrated with accepted
procedures and standards traceable to the National
Institute of Standards and Technology (NIST) and
includes a certificate of calibration.
ANSI/ESD S20.20 section 7.3 states “Compliance
verification records shall be established and maintained
to provide evidence of conformity to the technical
requirements.” Per ANSI/ESD S1.1 Annex A.3 Daily
(wrist strap system) testing may be omitted if constant
monitoring used.” Per ESD Handbook ESD TR 20.20
section 5.3.2.4.4 “Typical Test programs recommend
that wrist straps that are used daily should be tested
daily. However, if the products that are being produced
are of such value that knowledge of a continuous,
reliable ground is needed, and then continuous
monitoring should be considered or even required.”
The 724 Plus Workstation Monitor and its accessories
are available as the following item numbers:
Item Description
770724 724 Plus Workstation Monitor
770732 Operator Remote, Dual
770733 Operator Remote, Workstation 2
770735 Replacement Nylong Plug for 770733
Operator Remote, Pack of 20
770065 Verification Tester
CTA212 Power Adapter, 100-240 VAC Input, 12 VDC
1.5 A Output, All Plugs
Packaging
770724 724 Plus Workstation Monitor
1 724 Plus Workstation Monitor
1 Dual Operator Remote
1 Operator Remote Cable
1 Mat Monitor Cord (White)
1 Monitor Ground Cord (Green and Yellow)
1 Countersunk Washer
1 Flat Head Screw, 6-32 x 1/4"
4 Pan Head Screw, #6 x 3/8"
1 Power Adapter, 12 VDC, with interchangeable plugs
(North America, UK/Asia, Europe)
770732 Dual Operator Remote
1 Dual Operator Remote
1 Operator Remote Cable
2 Pan Head Screw, #6 x 3/8"
770733 Workstation 2 Operator Remote
1 Workstation 2 Operator Remote
1 Operator Remote Cable
2 Pan Head Screw, #6 x 3/8"
1 Black Nylon Plug
724 Plus Workstation Monitor
Installation, Operation and Maintenance
Made in the
United States of America
USER GUIDE TB-9098
Figure 1. SCS 724 Plus Workstation Monitor
U.S. Patents 6,930,612; 9,983,251