Siemens milltronics ZSS User manual

ZSS
milltronics
Instruction Manual August 2003

© Siemens MilltronicsProcessInstruments Inc. 2003
Safety Guidelines
Warning notices must be observed to ensure personal safety as well as that of others, and to
protect the product and the connected equipment. These warning notices are accompanied
by a clarification of the level of caution to be observed.
Qualified Personnel
This device/system may only be set up and operated in conjunction with this manual.
Qualified personnel are only authorized to install and operate this equipment in accordance
with established safety practices and standards.
Warning: This product can only function properly and safely if it is correctly transported,
stored, installed, set up, operated, and maintained.
Note: Always use product in accordance with specifications.
Copyright Siemens Milltronics Process
Instruments Inc.2003.AllRights ReservedDisclaimer of Liability
This document is available in bound version and in
electronic version. We encourage users to
purchase authorized bound manuals, or to view
electronic versions as designed and authored by
Siemens Milltronics Process Instruments Inc.
Siemens Milltronics Process Instruments Inc. will
not be responsible for the contents of partial or
whole reproductions of either bound or electronic
versions.
While we have verified the contents of
this manual for agreement with the
instrumentation described, variations
remain possible. Thus we cannot
guarantee full agreement. The
contents of this manual are regularly
reviewed and corrections are included
in subsequent editions. We welcome
all suggestions for improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.
Contact SMPI Technical Publications at the following address:
Technical Publications
Siemens Milltronics Process Instruments Inc.
1954 Technology Drive, P.O. Box 4225
Peterborough, Ontario, Canada, K9J 7B1
Email: [e-mail]
For the libraryof SMPI instruction manuals, visitour Web site: www.siemens-milltronics.com

i
Table of Contents
Milltronics ZSS Motion Sensing Switch ........................................................................1
Safety Notes .............................................................................................................................................1
The Manual ...............................................................................................................................................1
Specifications ......................................................................................................................2
Installation ..........................................................................................................................3
Environment ..............................................................................................................................................3
ZSS Circuit Card ..................................................................................................................4
ZSS Connection ...................................................................................................................4
ZSS Typical Wiring .............................................................................................................5
Operation ..............................................................................................................................6
Dimensions ..........................................................................................................................7

ii

7ML19985DF01 Milltronics ZSS – INSTRUCTION MANUAL Page 1
Milltronics ZSS Motion Sensing Switch
Milltronics ZSS motion sensing switch is a heavy-duty zero speed alarm. It is used to
detect the absence or presence of motion of rotating, reciprocating or conveying
equipment. The ZSS has a circuit card and a magnetic assembly potted in the probe body.
The ZSS is powered from the line voltage and provides a set of dry relay contacts to
indicate motion when the ferrous targets of the machinery being monitored pass in front
of the probe.
Safety Notes
Special attention must be paid to warnings and notes highlighted from the rest of the text
by grey boxes.
The Manual
This instruction manual covers the installation, operation and maintenance of the
Milltronics ZSS. It is essential that this manual be referred to for proper installation and
operation of your unit. Adhering to the installation and operating procedures will insure a
quick, trouble free installation and allow for the maximum accuracy and reliability of your
motion sensing probe.
If you have any questions, comments, or suggestions about the manual contents, please
email us at [e-mail].
For the complete library of Siemens Milltronics manuals,
go to www.siemens-milltronics.com.
WARNINGmeans thatfailuretoobservethenecessaryprecautions
can result in death, serious injury, and/or considerable material
damage.
Note:means important information about the product or that part of the operating
manual.

Page 2 Milltronics ZSS – INSTRUCTION MANUAL 7ML19985DF01
Specifications
Power
• 115 V AC/50-60 Hz, 10 VA
• 230 V AC/50-60 Hz, 10 VA
•"10% of rated voltage
Output
• 1 form C (S.P.D.T.) dry relay contacts, rated 5 A at 250 V AC, fail-safe operation
• time delay :
• start up : 3 seconds "1fixed
• zero speed : 5 seconds "1(minimum speed 10 to 15 ppm)1or 10
seconds "2(minimum speed 5 to 7.5 ppm)1
Operating Temperature
• – 40 to 60 °C (– 40 to 140 °F)
Dynamic Range
• minimum 6 or 12 pulses per minute*
• maximum 2400 pulses per minute
Shipping Weight
• 2 kg (4.4 lbs.)
Approvals
•CSA
• not CE compliant
1. Selected via a common jumper. Refer to Operation.

7ML19985DF01 Milltronics ZSS – INSTRUCTION MANUAL Page 3
Installation
Environment
The ZSS must be mounted in an area that is non-hazardous, within the ambient
temperature range and non-corrosive to the materials of construction. Refer to
Dimension for materials of construction.
The probe should be mounted using the supplied mounting flange, onto a vibration free
structure. The gap between the probe and the target should be sufficient such that there
is no danger of the target damaging the probe. The maximum allowable gap is 38 mm
(1.5") from the face of the target to the face of the probe for target dimensions of 25 mm x
25 mm x 50 mm (1" x 1" x 2").
The ZSS is sensitive to lateral disturbances to its magnetic field. If the ZSS is responding
to motion from an interfering target, move the ZSS or install a ferrous plate (steel ) as a
shield between the ZSS and the interfering target.
Where possible, the probe should be mounted such that the conduit entry is pointing
down to avoid accumulation of condensation in the casing. Connection of the probe
should be made via flexible conduit for easier removal or adjustment of the probe.
WARNING: The probe is highly magnetic. Keep it away from
magnetosensitive materials such as computer discs and audio or
video tapes.
Note:In climates where direct sunlight may cause the Milltronics ZSS
temperature to rise above the specified limit, shade the unit by installing a sun
shield.
PETE FROGGATT
NOV/08/90
G1000163
38 mm (1.5")
maximum gap

Page 4 Milltronics ZSS – INSTRUCTION MANUAL 7ML19985DF01
ZSS Circuit Card
ZSS Connection
Notes:
For 115 V AC operation, jumpers J1 and J2 only are installed.
For 230 V AC operation, jumper J3 only is installed.
Notes:
1. Dry contacts shown in de-energized (alarm or shelf) state.
2. ZSS is manufactured for 115 or 230 V AC operation. Correct voltage must
be supplied. Voltages lower than specified will result in an inoperative
condition. Vol higher than specified will severely damage unit.
3. For 5 second time delay and minimum 12 ppm range, connect jumper
across 1TB-7/8.
terminal block for customer connection
ZERO SPEED SWITCH
N.O.
COM
N.C.
L1
L2N
GR
5 SEC /
12 PPM
1TB
note 1
note 3
note 2
terminal circuit card

7ML19985DF01 Milltronics ZSS – INSTRUCTION MANUAL Page 5
ZSS Typical Wiring
Should the time delay feature on start up not be required, power should be applied
continuously from a separate source. Typically this would be desirable for automatic up-
stream start up of conveying devices after down stream drive has reached its operation
speed.
Notes:
1. Interlocks and safety pull switches are not shown.
2. If ‘START’ is initiated by programmable logic controller, closure time may
be of insufficient duration to allow ZSS contact to latch. In such a case,
program a timer contact into circuit.
3. CSA requires a 3 A or less fuse to protect contacts. For 240 V AC, protect
contacts with a 1500 VA transformer as well.
115/230 V AC 50/60 Hz
note 3
Stop Start
Contactor
note 2
1 2
1TB M1
ZSS
L2/N
L1
ZSS
Contactor
hold until up to speed
1 2
Stop
note 3 1TB M1
Start

Page 6 Milltronics ZSS – INSTRUCTION MANUAL 7ML19985DF01
Operation
When power is initially applied to the ZSS, the alarm relay is energized and held
artificially by the timing circuit. This will simulate the normal operation of the ZSS for a
start up delay of 3"seconds (or 5 seconds if a jumper is wired across terminal block
1 TB - 7/8).
As a ferromagnetic object passes through the probes permanent magnet field, the
distortion of the flux is sensed by the magneto resistive sensor. The sensor modulates the
current through it to produce a pulse which resets an internal timing circuit. This action
keeps the alarm relay energized providing fail-safe operation of the contacts.
If no target or change in flux is sensed for a period of 10 seconds (or 5 seconds if a jumper
is wired across terminal block 1TB-7/8), the timing circuit will not be reset. This will cause
the alarm relay to de-energize and the contacts to change state.
Thus the ZSS will not detect the motion of uniform ferromagnetic masses that do not
produce pulses within the period of the time delay on zero speed.

7ML19985DF01 Milltronics ZSS – INSTRUCTION MANUAL Page 7
Dimensions
10-32 screw,
4 places
3/4" NPT
conduit entrance
circuit card
226 mm
(8.9") 127 mm
(5")
mounting
flange, see
detail A
2" NPSL
phenolic
probe body
60 m
m
(2.38")
locknut, plated
casing gasket, neoprene
casing, aluminum
197 mm
(7.75")
cap gasket,
neoprene
cap,
aluminum
Detail A Mounting
95 mm (3.75") dia.
probe clearance hole
6 mm (0.25") dia. hole
for 1/4 - 20 bolt
or drill and tap
on 114 mm (4.5") BCD,
4 places
6 mm (0.25) dia. hole
for 1/4 - 20 bolt on
114 mm (4.5") BDC,
4 places
O.D.
133 mm
(5.25")
25 mm
(1.0")
2" NPSL

IQ300IX.fm Page 5 Tuesday, October 2, 2001 1:43 PM

Notes
Notes.fm Page 1 Thursday, October 11, 2001 8:48 AM

Notes
Notes.fm Page 2 Thursday, October 11, 2001 8:48 AM

IQ300IX.fm Page 5 Tuesday, October 2, 2001 1:43 PM

*7ml19985DF01* Rev. 1.0
www.siemens-milltronics.com
Siemens Milltronics Process Instruments Inc.
1954Technology Drive, P.O. Box 4225
Peterborough, ON, Canada K9J 7B1
Tel: [phone] Fax: [phone]
Email: [email protected]
Siemens Milltronics Process Instruments Inc. 2003
Subject to change without prior notice
Printed in Canada