PCB Piezotronics 070M69 User manual

Model 070M69
Computational ICP® sensor signal cond. module, 8-channels, 4 differenced
Installation and Operating Manual
For assistance with the operation of this product,
contact PCB Piezotronics, Inc.
Toll-free: 800-828-8840
24-hour SensorLine: 716-684-0001
Fax: [phone]
E-mail: [email protected]
Web: www.pcb.com

Manual 21354 Rev E
ECN 50523
Repair and Maintenance
PCB guarantees Total Customer Satisfaction through its
“Lifetime Warranty Plus” on all Platinum Stock Products
sold by PCB and through its limited warranties on all other
PCB Stock, Standard and Special products. Due to the
sophisticated nature of our sensors and associated
instrumentation, field servicing and repair is not
recommended and, if attempted, will void the factory
warranty.
Beyond routine calibration and battery replacements
where applicable, our products require no user
maintenance. Clean electrical connectors, housings, and
mounting surfaces with solutions and techniques that will
not harm the material of construction. Observe caution
when using liquids near devices that are not hermetically
sealed. Such devices should only be wiped with a
dampened cloth—never saturated or submerged.
In the event that equipment becomes damaged or ceases
to operate, our Application Engineers are here to support
your troubleshooting efforts 24 hours a day, 7 days a
week. Call or email with model and serial number as well
as a brief description of the problem.
Calibration
Routine calibration of sensors and associated
instrumentation is necessary to maintain measurement
accuracy. We recommend calibrating on an annual basis,
after exposure to any extreme environmental influence,
or prior to any critical test.
PCB Piezotronics is an ISO-9001 certified company whose
calibration services are accredited by A2LA to ISO/IEC
17025, with full traceability to SI through N.I.S.T. In
addition to our standard calibration services, we also offer
specialized tests, including: sensitivity at elevated or
cryogenic temperatures, phase response, extended high
or low frequency response, extended range, leak testing,
hydrostatic pressure testing, and others. For more
information, contact your local PCB Piezotronics
distributor, sales representative, or factory customer
service representative.
Returning Equipment
If factory repair is required, our representatives will
provide you with a Return Material Authorization (RMA)
number, which we use to reference any information you
have already provided and expedite the repair process.
This number should be clearly marked on the outside of
all returned package(s) and on any packing list(s)
accompanying the shipment.
Contact Information
PCB Piezotronics, Inc.
3425 Walden Ave.
Depew, NY14043 USA
Toll-free: [phone]
24-hour SensorLine: [phone]
General inquiries: in[email protected]
Repair inquiries: [e-mail]
For a complete list of distributors, global offices and sales
representatives, visit our website, www.pcb.com.
Safety Considerations
This product is intended for use by qualified personnel
who recognize shock hazards and are familiar with the
precautions required to avoid injury. While our equipment
is designed with user safety in mind, the protection
provided by the equipment may be impaired if equipment
is used in a manner not specified by this manual.
Discontinue use and contact our 24-Hour Sensorline if:
Assistance is needed to safely operate equipment
Damage is visible or suspected
Equipment fails or malfunctions
For complete equipment ratings, refer to the enclosed
specification sheet for your product.
Definition of Terms and Symbols
The following symbols may be used in this manual:
DANGER
Indicates an immediate hazardous
situation, which, if not avoided, may
result in death or serious injury.

Manual 21354 Rev E
ECN 50523
CAUTION
Refers to hazards that could damage
the instrument.
NOTE
Indicates tips, recommendations and
important information. The notes
simplify processes and contain
additional information on particular
operating steps.
The following symbols may be found on the equipment
described in this manual:
This symbol on the unit indicates that
high voltage may be present. Use
standard safety precautions to avoid
personal contact with this voltage.
This symbol on the unit indicates that
the user should refer to the operating
instructions located in the manual.
This symbol indicates safety, earth
ground.

Manual 21354 Rev E
ECN 50523
PCB工业监视和测量设备 - 中国RoHS2公布表
PCB Industrial Monitoring and Measuring Equipment - China RoHS 2 Disclosure Table
部件名称
有害物质
铅(Pb)
汞
(Hg)
镉
(Cd)
六价铬(Cr(VI))
多溴联苯 (PBB)
多溴二苯醚(PBDE)
住房
O
O
O
O
O
O
PCB板
X
O
O
O
O
O
电气连接器
O
O
O
O
O
O
压电晶体
X
O
O
O
O
O
环氧
O
O
O
O
O
O
铁氟龙
O
O
O
O
O
O
电子
O
O
O
O
O
O
厚膜基板
O
O
X
O
O
O
电线
O
O
O
O
O
O
电缆
X
O
O
O
O
O
塑料
O
O
O
O
O
O
焊接
X
O
O
O
O
O
铜合金/黄铜
X
O
O
O
O
O
本表格依据 SJ/T 11364 的规定编制。
O：表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。
X：表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。
铅是欧洲RoHS指令2011/65/ EU附件三和附件四目前由于允许的豁免。
CHINA RoHS COMPLIANCE

Manual 21354 Rev E
ECN 50523
Component Name
Hazardous Substances
Lead (Pb)
Mercury (Hg)
Cadmium (Cd)
Chromium VI
Compounds
(Cr(VI))
Polybrominated
Biphenyls (PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
Housing
O
O
O
O
O
O
PCB Board
X
O
O
O
O
O
Electrical Connectors
O
O
O
O
O
O
Piezoelectric Crystals
X
O
O
O
O
O
Epoxy
O
O
O
O
O
O
Teflon
O
O
O
O
O
O
Electronics
O
O
O
O
O
O
Thick Film Substrate
O
O
X
O
O
O
Wires
O
O
O
O
O
O
Cables
X
O
O
O
O
O
Plastic
O
O
O
O
O
O
Solder
X
O
O
O
O
O
Copper Alloy/Brass
X
O
O
O
O
O
This table is prepared in accordance with the provisions of SJ/T 11364.
O: Indicates that said hazardous substance contained in all of the homogeneous materials for this part is below the limit
requirement of GB/T 26572.
X: Indicates that said hazardous substance contained in at least one of the homogeneous materials for this part is above the limit
requirement of GB/T 26572.
Lead is present due to allowed exemption in Annex III or Annex IV of the European RoHS Directive 2011/65/EU.

PCB PIEZOTRONICS, INC. 3425 WALDEN AVENUE DEPEW, NY 14043-2495 PHONE [phone] FAX [phone]
COMPUTATIONAL
SIGNAL CONDITIONER
MODULE
Model 070M69
OPERATING MANUAL
MANUAL NUMBER: 61056
MANUAL REVISION: NR
ECN NUMBER: 43917

i
Table of Contents
1.0 Chassis and Power Supply…………………………………………………………….. 1
1.1 Introduction: Safety Considerations…………..………………………………………..1
1.2 Description………………………………………………………………………………..2
1.2.1 Chassis (Models 441A33, 441A35, 441A38, 441A42, 441A43,
441A45, and 441A49)………… ……………………………………………………… 2
1.2.2 AC Power Supply (Model 441A101)…………………………………………………...2
1.2.3 DC Power Supply (Model 441A102)…………………………………………………...3
1.2.4 441A38 with Built-In AC Power Supply……………………………………………….. 3
1.3 Maintenance and Repair……………………………………………………………….. 3
2.0 Product Overview……………………………………………………………………….. 3
3.0 Description………………………………………………………………………………..3
4.0 Operation………………………………………………………………………………… 4
4.1 Grounding………………………………………………………………………………...4
5.0 Maintenance and Repair……………………………………………………………….. 4
Appendix A: Photo of 070M69 Module

MODEL 070M69 COMPUTATIONAL SIGNAL CONDITIONER MODULE
1
1.0 Chassis and Power Supply
1.1 Introduction: Safety Considerations
WARNING 1: The power supply/signal conditioner
should not be opened by anyone other than
qualified service personnel. This product is
intended for use by qualified personnel who
recognize shock hazards and are familiar with the
safety precautions required to avoid injury.
WARNING 2: This equipment is designed with
user safety in mind; however, the protection
provided by the equipment may be impaired if the
equipment is used in a manner not specified by
PCB Piezotronics, Inc.
Caution 1: Cables can kill your equipment. High
voltage electrostatic discharge can damage
electrical devices. Similar to a capacitor, a cable
can hold a charge caused by triboelectric transfer,
such as that which occurs in the following:
Laying on and moving across a rug.
Any movement through air.
The action of rolling out a cable.
Contact to a non-grounded person.
The solution for product safety: 1) Connect the
cables only with the AC power off. 2) Temporarily
“short” the end of the cable before attaching it to
any signal input or output.
Caution 2: ESD considerations should be
made prior to performing any internal
adjustments on the equipment. Any piece of
electronic equipment is vulnerable to ESD
when opened for adjustments. Internal
adjustments should therefore be done ONLY
in an ESD-safe work area. Many products
have ESD protection, but the level of
protection may be exceeded by extremely high
voltage.
WARNING SYMBOLS AND TERMS
The following symbols and terms may be found on the
equipment described in this manual.
This symbol on the unit indicates that the
user should refer to the operating instructions
located in the manual.
This symbol on the unit indicates that high
voltage may be present. Use standard safety
precautions to avoid personal contact with this
voltage.
This symbol indicates safety, earth ground.
The WARNING heading used in this manual
explains dangers that might result in personal injury
or death. Always read the associated information
very carefully before performing the indicated
procedure.
The Caution heading used in this manual explains
hazards that could damage the instrument.
EQUIPMENT RATINGS
For complete specifications, please refer to the
enclosed Specification Sheet. This equipment
operates at 104F (40C), in an environment
having 93% relative humidity. Its frequency range
is 50/60 Hz. Operation of this unit is limited to
environments having an altitude of less than 2000
meters. The pollution degree for operation of the
440 Series is Two (2), meaning that normally, only
non-conductive pollution occurs. The overvoltage
category is II, indicating the transient voltage levels
that may be tolerated by the equipment.
The Model 441A101 requires 100 to 240 VAC with
1.3 amps to operate. It gets its power via an AC
line cord that plugs into the receptacle on the rear
panel. (The Model 441A102 –DC supply does not
use this receptacle.)
Two rear panel fuses, located below switch in the
AC receptacle, protect the power line inputs of the
instrument. The fuse type is a T 1.6A, L 250 V. To
change the fuse, disconnect the power cord. Find
the slot just above the power switch and pull
forward to open the door that exposes the fuse
drawers. Pull the individual drawer forward and
insert a new fuse. See Figure 1.

MODEL 070M69 COMPUTATIONAL SIGNAL CONDITIONER MODULE
2
Slot –carefully pry to expose fuse drawers
Power Switch
Fuse Drawers
AC Receptacle
Figure 1. Fuse Replacement
1.2 Description
The PCB Modular Signal Conditioning System is a
flexible, compact means of coordinating and
customizing the signal conditioning needs of
vibration, pressure, or force sensing
instrumentation. At its most basic level, the system
consists of a rectangular chassis with a single-slot
power supply on the right side of the chassis and
one module (customer specified). This power
supply is either AC or battery power, depending on
customer requirements. It should be noted,
however, that the AC and DC power supplies are
separate units, having differing part numbers. See
Section 1.2.3 and 1.2.4 for a more detailed
description of the power supplies.
1.2.1 Chassis (Model 441A33, 441A35,
441A38, 441A42, 441A43, 441A45, and
441A49)
The chassis configuration varies, ranging from two
slots to nine; one of these slots (extreme right) is
reserved for the power supply. Situated on the
rear panel behind the power supply slot is a power
entry module that includes an on/off switch, fuses,
and a power filter for use with the AC power supply
only. See Figure 1.
Eurocard-style plug-in modules occupy the
remaining slots.
The standard chassis is constructed of molded
plastic with molded ventilation slots. The 19-inch
rack-mounted unit is constructed of metal.
The Models 441A33, 441A35, and 441A38 are the
computer-controlled versions of the standard
chassis. The back panel of this chassis has one
RS-232 connector and two RS-485 connectors
marked “in” and “out”. Also located on the rear
panel is a cooling fan.
A back plane on the inside rear of the unit unifies
the circuitry, routing it to the power supply.
Individual modules slide into the unit via the slot
divisions and are secured to the inside frame using
mechanical fasteners.
Models 441A42, 441A43, 441A45, and 441A49 are
“slave” racks designed to be controlled by a
“master” rack (441A33, 441A35, and 441A38).
These racks do not have an RS-232 connector, but
only two RS-485 connectors, which may be
connected to either a master, or another slave in a
daisy chain fashion. At least one master must be in
the system if it is desired to use computer control.
Located on the rear panel of these racks is a
cooling fan, which normally is on. If it is desired to
turn off the fan in order to reduce acoustical noise,
a jumper “J2” located on the motherboard must be
removed. In order to access this jumper, the rear
panel must be taken off. The fan may now be
disabled via a command from the host computer
controlling the master. The fan should be disabled
for as short a period as possible to ensure
continuous cooling. Contact the factory for more
details.
1.2.2 AC Power Supply (Model 441A101)
The Model 441A01 is a single-slot, CE marked,
AC-line power supply designed to fit only the
extreme right slot of the PCB Series 440 Modular
chassis. It supplies a maximum of 45 watts of
power and may be used to operate single or
multiple signal conditioning modules housed in the
two-, three-, or nine-wide standard chassis and
optional auxiliary chassis.
The power unit supplies a maximum of 45 watts of
power. Please note that while this unit is rated for
a maximum power of 45 W, CE requirements
mandate that the load not exceed 30 Watts.
Power requirements are found on the Specification
Sheet for the individual module. To determine the
total power of your particular set-up, add the
powers for all modules. The total must be < 30
watts.

MODEL 070M69 COMPUTATIONAL SIGNAL CONDITIONER MODULE
3
1.2.3 DC Power Supply (Model 441A102)
Model 441A102 is a single width, CE marked,
rechargeable DC battery power supply designed to
fit only the extreme right slot of the PCB Series
Modular chassis. It supplies a maximum of 30
watt/hrs and may be used to operate single or
multiple signal conditioning modules housed in the
two-, three-, or nine-wide standard chassis and
optional auxiliary chassis.
It can also be used with an external 12VDC supply
like a car battery by using the supplied DC power
cord Model 017A22. Alternatively, it may be line
powered using the optional Model 488A09 AC
power adaptor. Both these external power sources
plug into the EXT DC jack located on the front
panel. Refer attached operation guide for the
Model 441A102 in appendix A.
1.2.4 441A38 with Built-In AC Power Supply
The Model 441A38 is an 8-slot chassis that has a
built-in power supply. This chassis does not
require the use of the 441A101 or 441A102 power
supply modules. This chassis requires AC-line
power. It supplies a maximum of 100 watts of
power and may be used to operate single or
multiple signal conditioning modules.
1.3 Maintenance and Repair
Aside from battery replacement on units so
equipped, no maintenance is required for this
modular unit, other than wiping the exterior of the
chassis with a soft cloth when dusty. If you have
trouble with your particular unit, contact the factory
for assistance. Because of the sophisticated
nature of PCB instrumentation, field repair is not
recommended. Any field repairs on this unit will
void the warranty. If factory service is required,
return the instrument to PCB. A free quotation is
provided prior to servicing.
To expedite the repair process, contact a PCB
Customer Service Representative for a Return
Materials Authorization (RMA) number prior to
sending equipment to the factory. Please have
pertinent information available, such as model and
serial numbers, application information, what
instruments are connected to the equipment, and
so forth. Also, to insure efficient service, be sure to
include a brief written description of the problem.
International customers should return equipment to
a local distributor, or contact PCB if no distributors
are available.
PCB is an ISO 9001-certified company that has
embraced its company mission of TOTAL
CUSTOMER SATISFACTION. These two factors
assure that if at any time you are not satisfied with
any of our products or service, let us know and we
will correct the problem. If you have any questions
or concerns on the use of any PCB product or the
aforementioned policies, please contact PCB at
716-684-0001.
2.0 Product Overview
Model 070M69 Computational Signal Conditioner is
an ICP®/ voltage signal conditioner module. It is
intended for use with piezoelectric, force sensors.
This module is particularly useful for
measurements of force and moments in Force
Limited Vibration Testing systems.
The Computational Signal Conditioner features
eight inputs for ICP®sensors. Optionally, the
constant current can be turned off (set to 0 mA)
and the inputs can be used for voltage signals.
The unit has four Difference Outputs and one
Summed Output. The Summed Output also has
gain available with x0.1, x1, x10 settings.
3.0 Description
The Model 070M69 Computation Signal
Conditioner module is a 2-wide (two slots) module
designed for use in PCB’s 440 Series of modular
signal conditioners. The model is an 8-channel
ICP®sensor signal conditioner that provides five
output signals that are mathematical functions of
the eight input signals.
The eight input channels all have BNC jack
connectors and they are labeled as +V1, -V1, +V2,
-V2, +V3, -V3, +V4, and –V4,
The output signals all have BNC jack connectors
and include the following:

MODEL 070M69 COMPUTATIONAL SIGNAL CONDITIONER MODULE
4
Four Difference Outputs that are each generated
from a set of two input channel signals. These
outputs are labeled as ∆V1, ∆V2, ∆V3, and ∆V4
and they are mathematically equal to the following:
∆V1 = (+V1) –(-V1)
∆V2 = (+V2) – (-V2)
∆V3 = (+V3) – (-V3)
∆V4 = (+V4) –(-V4)
The fifth Summed Output is labeled as Σ∆V and it
is generated from the four Difference Outputs and
a gain function. The equation for this output is as
follows:
Σ∆V = Gain*(∆V1 + ∆V2 + ∆V3 + ∆V4)
The gain switch allows for gain values of x0.1, x1,
or x10 in the equation above.
This computational signal conditioner is used to get
moment measurements in Force Limited Vibration
Testing.
This unit can also be used to just sum four input
channels by applying signals to the +Vx channels
only, leaving the –Vx channels open. This would
result in the following Summed Output equation:
Σ∆V = Gain*((+V1)+(+V2)+(+V3)+(+V4))
Eight red LED fault monitors, one per channel, are
located on the front panel to provide the user a
means to check circuit continuity and operation.
Input faults, short or open, are indicated by the fault
LED being solid red.
Additionally, one yellow LED is located in the upper
right-hand corner of the front panel. This is the
Overload LED and it is on whenever any input, any
Difference Output, or the Summed Output exceed
10 Volts. This LED will remain on for as long as
one of these signals is above 10 Volts.
4.0 Operation
The Model 070M69 is designed to fit into the PCB
Modular Signal Conditioning System. It may be
used in any size chassis in combination with any
other modular series models. For further
information on the PCB Modular System, consult
the PCB Modular Signal Conditioning System sales
sheet.
The Model 070M69 can be powered from the
441A101 AC Power Module or the 441A102 DC
Power Module. Additionally it can be used in the
441A38 chassis that includes a built in AC Power
Module.
Please note that use of the 070M69 module with
the 441A102 DC Power Module will cause an
increase in the ICP® Excitation Voltage and
Current supplied to the sensors. This is due to the
higher 30 VDC Supply Voltage of this power
module compared to the other power sources. The
higher ICP® Excitation Voltage and Current will not
have any adverse affects on the operation of this
unit or the sensors attached to it. Please see the
specification sheet for more details.
4.1 Grounding
Indiscriminate grounding of instruments can
introduce ground loop interference. To prevent this,
it is necessary to insure that the signal ground lines
of the 070M69 and other instruments used with this
unit are grounded at one point only in the
measurement system.
If an instrument with a mains socket chassis
terminal is used in the measurement system,
check that a) that only one of the instruments has
its signal ground connected via the chassis to
mains ground, (b) that the housing of the
transducer is isolated from grounded measurement
sources.
If the measurement set-up is mounted in a metal
instrumentation rack, ensure that only one of the
instruments has its signal ground connected to the
chassis (and chassis connected to mains ground if
the unit has a mains socket chassis terminal).
5.0 Maintenance and Repair
No maintenance is required for this modular unit,
other than wiping the exterior of the enclosure with
a soft cloth when dusty. If you have trouble with
your particular unit, contact the factory for
assistance. Because of the sophisticated nature of
PCB instrumentation, field repair is not
recommended. Any field repairs on this unit will

MODEL 070M69 COMPUTATIONAL SIGNAL CONDITIONER MODULE
5
void the warranty. If factory service is required,
return the instrument to PCB. A free quotation is
provided prior to servicing.
To expedite the repair process, contact a PCB
Customer Service Representative for a Return
Materials Authorization (RMA) number prior to
sending equipment to the factory. Please have
pertinent information available, such as model and
serial numbers, application information, what
instruments are connected to the equipment, and
so forth. Also, to insure efficient service, be sure to
include a brief written description of the problem.
International customers should return equipment to
a local distributor, or contact PCB if no distributors
are available.
PCB’s is an ISO 9001-certified company that has
embraced its company mission of TOTAL
CUSTOMER SATISFACTION. These two factors
assure that if at any time you are not satisfied with
any of our products or service, let us know and we
will correct the problem. If you have any questions
or concerns on the use of any PCB product or the
aforementioned policies, please contact PCB at
716-684-0001.
Appendix A:
Photo of the 070M69 Module