Vermason 222605 Instruction Manual

Multi-Mount Continuous Monitor
Operation, Installation, and Maintenance
UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK
Phone: [phone], Fax: [phone] • e-mail: [email protected], Internet: Vermason.co.uk
TB-7576 October 2011 Page 1 of 3 © 2011 Vermason
The Vermason Multi-Mount Continuous
Monitor continuously monitors the
integrity of one operator and one working
surface. This monitor will provide
virtually instantaneous notification
of static control equipment failures,
eliminating the need of periodic testing
and costly record keeping. This unit is
highly cost effective as it is designed
to monitor any conventional single wire
wrist strap and ground cord system.
Its small package and mounting tabs
with holes make it highly suitable to
install on most any equipment or work
bench surface. In addition, optional
mounting is available using the provided
adhesive-backed Velcro® strips. Using
either mounting method makes the
Multi-Mount Monitor suitable for most
any machinery or workbench even in
hard to reach locations.
The Vermason Multi-Mount Continuous
Monitor is available in one model:
with the resulting catastrophic or
latent defects can be considerable.
Multi-Mount Continuous Monitors
eliminate the need for users to test
wrist straps and log the results; by their
function, these monitors satisfy the ISO
9000 and EN 61340-5-1 test logging.
WAVE DISTORTION DETECTION
TECHNOLOGY PROVIDES TRUE 100%
CONTINUOUS MONITORING
From all the technical alternatives
available, Vermason has chosen wave
distortion technology for many of its
Continuous Monitor product offerings.
Wave distortion circuitry monitors
current/voltage phase shifts and provides
true 100% continuous monitoring.
Electrical current will lead voltage at
various points due to the combinations of
resistance and capacitive reactance. By
monitoring these “distortions” or phase
shifts, the wave distortion Multi-Mount
Continuous Monitor will reliably
determine if the circuit is complete.
Wave distortion technology can
be referred to “vector impedance
monitoring”. This description is valid as
the wave distortion technology measures
the impedance at the monitored banana
jack and looks for changes in either
the capacitance or resistance of the
circuit which includes the wrist strap
and its wearer. It uses filtering and
time domain sampling to filter out false
signals caused by voltage offsets, 60 Hz
fields and other electro-magnetic and
electrostatic interference.
In normal factory environments, and
with persons whose capacitance with
respect to ground is within design limits
(5 feet tall 90 pound person to 6 foot 5
inch 250 pound person), the Multi-Mount
Continuous Monitor cannot be “fooled”.
It will provide a reliable alarm only when
the wrist strap becomes dysfunctional or
unsafe according to accepted industry
standards. The Multi-Mount Continuous
Monitor is drift-free and designed to be
insensitive to the effects of squeezing or
stretching the coil cord.
ADVANTAGES OF WAVE
DISTORTION AND SINGLE-WIRE
TECHNOLOGY
The Vermason Multi-Mount Continuous
Monitor allows the use of any standard,
single-wire wrist strap and coiled cord.
TECHNICAL BULLETIN TB-7576
Made in the
United States of America
Figure 1. Vermason’s Multi-Mount
Continuous Monitor
Description
Leading companies use continuous
monitors as a cost effective component
in satisfying some of the audit and check
requirements of EN 61340-5-1.
Wrist strap testing “Where continuous
monitoring is used, no additional testing
is required.” [EN 61340-4-1, per A.5.2]
“The wrist band will normally be worn for
several hours at a time so it needs to be
comfortable while making good contact
with the skin. It is a good idea to check
the wrist strap every time it is applied.
Constant on line monitors can be used
so that any breaks will be immediately
found.” [EN 61340-5-2 section 5.2.7]
“The main advantage to a constant
monitor is the immediate indication that
the employee receives if the wrist strap
falls open. With an unmonitored system,
the employee will not be aware of a wrist
strap failure until the start of the next
shift. This has reliability benefits for an
ESD program as it might help reduce or
eliminate ESD damage.
There are also other process benefits
from using constant monitors such as the
elimination of the need to maintain daily
test logs and a reduction in the time for
employees to make the daily test. For
units that also monitor the connection of
a work surface to protective earth, it is
also possible to reduce or eliminate the
checking of the work surface as part of
the periodic audit of the process.” [CLC/
TR 61340-5-2:2008 User guide Annex
B.1.3 Constant monitors]
Model Voltage AC Calibration
222605 220 NIST
The Multi-Mount Continuous Monitor
is a real time instrument that ensures
that critical ESD generators in a ESD
protected are effectively grounded.
The instant an operator’s wrist strap or
working surface fails, the monitor will
issue audible and visual (LEDs) alarms
alerting the user and supervisor of the
problem.
The Parking Snap features provides a
means for the operator to disconnect
wrist strap cord when normally leaving
work area without audible alarm
sounding. It also provides a means of
wrist strap storage.
ADVANTAGES OF CONTINUOUS
MONITORING OVER PERIODIC
TESTING
Many customers are eliminating periodic
testing and are utilizing continuous
monitoring to better ensure that their
products were manufactured in an
ESD protected environment. Full time
continuous monitoring is superior to
periodic or pulsed testing, and can
save a significant amount of money
in testing costs and rejected product.
Periodic testing detects failures after
ESD susceptible products have been
manufactured. The costs of dealing

UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK
Phone: [phone], Fax: [phone] • e-mail: [email protected], Internet: Vermason.co.uk
TB-7576 Page 2 of 3
Features and Components (See
Figure 2)
A. Status LEDs: When the green LED
is lit, the operator is properly grounded.
When the red LED is lit, the operator is
not properly grounded.
B. Monitored Operator Jack: Where the
operator inserts the wrist cord banana
plug.
C. Working Surface Ground LEDs:
When the green LED is lit, the working
surface mat is properly ground. When
the red LED is lit, the working surface
mat is not properly grounded.
D. Operator Ground LEDs: When the
green LED is illuminated, the operator is
properly grounded. When the red LED is
illuminated, the operator is not properly
grounded.
E. 4mm Parking Snap: When touched
by the operator, this snap will deactivate
the alarm for six seconds. This allows
time for the operator to disconnect the
coiled cord from the wrist band and park
it on this snap. While parked, the coiled
cord disables the alarm, allowing the
operator to leave the workstation. The
OPERATOR GROUND LED will remain
off while the cord is parked. Upon
returning and removing the coiled cord
from the parking snap, the operator has
six seconds to hook up to the wrist band
before the alarm sounds.
F. 10mm Parking Snap: When touched
by the operator, this snap will deactivate
the alarm for six seconds. This allows
time for the operator to disconnect the
coiled cord from the wrist band and park
it on this snap. While parked, the coiled
cord disables the alarm, allowing the
operator to leave the workstation. The
OPERATOR GROUND LED will remain
off while the cord is parked. Upon
returning and removing the coiled cord
from the parking snap, the operator has
six seconds to hook up to the wrist band
before the alarm sounds.
G. 24 VAC Power Jack: Connect the
power adapter here.
H. Mat Connection: Monitors working
surface mat. NOTE: To disable working
surface monitoring, shunt this terminal to
the neighboring GND terminal with a bus
wire.
I. Mat Ground: Grounds working surface
mat.
Installation
Remove the monitor from its packaging
and inspect for any shipping damage.
Confirm that the working surface is 1 x
10E7 ohms or less and has a conductive
layer such as Dual Layer Rubber,
Dissipative 3-Layer Vinyl, or Micastat®
Dissipative Laminate with conductive
buried layers.
Included with each Multi-Mount
Continuous Monitor should be:
1 Multi-Mount Monitor
1 6' Mat Monitor Cord (Black)
1 6' Mat Ground Cord
(Green and Yellow)
2 Push and Clinch Snaps
2 Mounting screws
2 Counter Sink Washers
1 Set of hook and loop fasteners
1 Power Adapter
1 Certificate of Calibration
I. A convenient 220 VAC outlet should
be located and tested for proper wiring
and grounding. We recommend
Vermason items 224713 and 224714
AC Outlet Analyzer to verify proper
wiring and ground.
II. The Multi-Mount Continuous Monitor
may be mounted to a convenient
location using the included mounting
screws or Velcro® set. See Figure 3
for installation set-up.
III. Install Screws and Washers or Push
and Clinch snaps 12 to 72 inches
apart from each other on the work
surface mat. Make sure that they
pierce and clinch the bottom side of
the mat. (See Figure 3).
IV. Route the black ground cord to the
monitor’s green terminal block labeled
MAT.
V. Route the green ground cord to the
monitor’s green terminal block labeled
GND.
VI. Connect the power adapter to the
monitor’s power jack labeled “24VAC”
and the other end to a proper voltage
source.
Screw allows ground cord to
be bolted to mat; keeps cord
from disconnecting.
or
10mm snaps need to pierce and
clinch bottom side of mat. Snaps
need to be 12 to 72 inches apart
Work Surface Mat
Power Adapter
Connection
Figure 3. Installation method #1 of the
Multi-Mount Continuous Monitor
Figure 2. Multi-Mount Continuous
Monitor features and components
A
C
B
DE
G
H
F
I
Figure 4. Installation method #2 of the
Multi-Mount Continuous Monitor
The monitor/wrist strap/cord system
life-cycle costs are by far lower than
alternative systems which require
dual-wire cords and special wrist
straps. Over a five year period, the
dual-wire system can be three to five
times as expensive as a system utilizing
single-wire wrist straps and cords. See
Maintenance and Calibration (page 4) to
minimize life-cycle costs.
The dictionary defines constant as
uniform and unchanging, and continuous
as uninterrupted. None theless, some
dual-wire resistance monitors utilize a
pulsed test current and do not really
provide continuous monitoring. For
example, during each 2.2 second pulse
cycle of a leading “constant” resistive
monitor, electrical current is pulsed
for only 0.2 seconds followed by an
unmonitored interval of 2 seconds.
This leaves the user/wrist strap
unmonitored for over 90% of each
cycle. Damaging static charges can
easily occur in the portion of the time in
between the pulses. The off period of 2
seconds equals 2 billion nanoseconds,
and “it takes only about 25 volts applied
for 100 nanoseconds to blow most
memories or microprocessors”.*
By using the reliable wave distortion
technology to determine if the circuit
is complete, there are no false alarms.
There is no need to adjust or tune the
monitor to a specific user or installation.
The miniscule amount of electrical
current (less than 1 volt coil cord signal)
required to generate the waveform has
never caused reported skin irritation
and is extremely safe for use in voltage
sensitive applications such as disk drive
manufacturing.

* The working surface resistance is
measured between the two cords
installed to the mat working surface (See
Figure 3).
Operation
When the Multi-Mount Continuous
Monitor is installed to an ESD protective
working surface and grounded via a
power cord, the green WORKSURFACE
GROUND LED and red OPERATOR
GROUND LED should be illuminated.
The monitor takes 6 seconds to activate
its alarm circuitry when it is first plugged
in.
TO USE THE CONTINUOUS MONITOR:
1. Plug a wrist strap cord, not attached to
the wristband, into the monitored banana
jack labeled OPR on the side of the
unit (See Figure 2). This automatically
activates the selected operator channel.
The red operator LED should illuminate.
2. Remove the charges from your body
by making contact with a properly
grounded ESD working surface. Snap
the cord to the wristband, and fit it
snugly onto your wrist. This should
silence the audible alarm and cause
the OPERATOR GROUND LED to
switch from red to green. If this does
not happen, examine the wrist cord for
continuity or damage and your wrist
band to ensure that it is securely fit. If
you have dry skin, apply an approved
dissipative hand lotion such as Vermason
Reztore™ ESD Hand Lotion. When
leaving the area, the user can take
the wrist cord along or attach it to the
monitor parking snap. The audible alarm
will shut off in approximately 6-8 seconds
when the operator wrist cord is removed
from unit and will instantly shut off when
the cord is attached to the parking snap.
NOTE: It is recommended that you
use the Parking Snap rather than
continuously removing the Banana Plug
from its jack. If your process requires
the constant insertion and removal of
the Banana Plug, please contact your
Vermason Representative for alternate
solutions.
PARKING SNAP
The audible alarm is designed to alert
both the operator and supervisor. The
parking snap feature allows the operator
to disconnect when leaving the work
area without sounding the audible alarm.
It also provides a means for wrist cord
storage (red OPERATOR GROUND
LED will illuminate). When the operator
touches the parking snap, the audible
alarm will disable for 6 seconds. The
user can then disconnect the wrist cord
from the wrist band and attach it to the
parking snap for storage. If the operator
removes the wrist cord plug from the
OPR banana jack, the audible alarm will
sound for 6-8 seconds.
WORKING SURFACE CHANNEL
The Multi-Mount Continuous Monitor
monitoring circuitry is sufficiently
sensitive to detect extremely low current
when used with a worksurface with a
conductive layer.
Specifications:
Test range of monitored circuit 500K -
10M ohms†
Operating Voltage
220 VAC, 50/60 Hz
Work Surface Range
10 Megohms
Wrist strap open circuit voltage
1.2 volts peak to peak @ 1-2
MicroAmps
Mat test open circuit voltage
5 to 7.5 volts
Response time to alarm
<50 ms
Operating Temperature
0 - 40°C
Size
3.86" L x 2.10" W x .910" H
(98.0mm L x 53.3mm W x 23.1mm H)
† This cannot be verified with standard
DC test equipment. The continuous
monitor is an impedance sensing device
and the limits are determined by the
magnitude and angle of the impedance.
Figure 5. Using the Multi-Mount
Continuous Monitor
Note: Working surface must have a
conductive layer such as Dual Layer
Rubber or Dissipative 3-Layer Vinyl
or Micastat® Dissipative Laminate
with conductive buried layers.
Vermason Continuous Monitors are not
recommended for use with homogeneous
matting.
UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK
Phone: [phone], Fax: [phone] • e-mail: [email protected], Internet: Vermason.co.uk
TB-7576 Page 3 of 3
Maintenance and Calibration
The Multi-Mount Continuous Monitor
is solid state and designed to be
maintenance free. The 222605 is
calibrated to NIST traceable standards.
There are no user adjustments
neccesary. Because of the wave
distortion sensing nature of the test
circuit, special equipment is required
for calibration. We recommend that
calibration be performed using the
Vermason 222750 Continuous Monitor
Calibration Unit. The Calibration Unit is
a most important product which allows
the customer to perform NIST traceable
calibration on continuous monitors.
The 222750 is designed to be used on
the shop floor at the workstation, virtually
eliminating downtime, verifying that the
continuous monitor is operating within
tolerances. Vermason recommends
calibration annually.
Limited Warranty
Vermason expressly warrants that for a period
of one (1) year from the date of purchase,
Vermason Continuous Monitors will be free of
defects in material (parts) and workmanship
(labour). Within the warranty period, a unit will
be tested, repaired or replaced at Vermason’s
option, free of charge. Call Customer Service
at 0044 (0) 1462 672005 for a Return Material
Authorisation (RMA) and for proper shipping
instructions and address. Any unit under
warranty should be shipped prepaid to the
Vermason factory. You should include a copy of
your original packing slip, invoice, or other proof
of purchase date. Warranty repairs will take
approximately two weeks.
If your unit is out of warranty, Vermason will
quote repair charges necessary to bring your
unit to factory standards. Call Customer Service
at 0044 (0) 1462 672005 for a Return Material
Authorisation (RMA) and proper shipping
instructions and address.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS
MADE IN LIEU OF ALL OTHER PRODUCT
WARRANTIES, EXPRESSED AND IMPLIED,
INCLUDING MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE
WHICH ARE SPECIFICALLY DISCLAIMED.
The express warranty will not apply to defects
or damage due to accidents, neglect, misuse,
alterations, operator error, or failure to properly
maintain, clean or repair products.
Limit of liability
In no event will Vermason or any seller be
responsible or liable for any injury, loss or
damage, direct or consequential, arising out of
the use of or the inability to use the product.
Before using, users shall determine the suitability
of the product for their intended use, and users
assume all risk and liability whatsoever in
connection therewith.