Bmcm BP16 Manuale utente

BP16 / BP16-PC

Carrier board (with housing) for measuring amplifiers of the MAL series

Features Applications

•16 DIL sockets for MAL amplifiers •controlling of processes

•37-pole Sub-D input socket •development

•37-pole Sub-D output socket •signal conditioning

•BP16: in external metal housing •sensor adjustment

•BP16-PC: for installation in the PC

Page 1

The BP16/BP16-PC (BackPlane)

features slots for

... 16 measuring amplifiers ...

of the MAL series and of other

manufacturers.

The BP16 is a backplane for am-

plifiers with housing used as an

external device, whereas the

BP16-PC can be integrated in a

PC and connected internally to a

PC measuring card.

The BP16 / BP16-PC provides all

included amplifiers with

... electrically isolated supply ... .

For sensor supply additionally

... 5V, 120mA ...

with electrical isolation are pro-

vided.

The measuring amplifier modules

needed for signal conditioning are

... very reasonable ...

standard amplifiers.

To achieve optimum measuring

results, please see for a good sha-

red potential of the signals to be

measured, as there is no electrical

isolation of the measuring amplifi-

ers.

The input signals are connected at

a 37-pole Sub-D socket. The out-

put signals of the individual meas-

uring amplifiers can also be rea-

ched at an additional 37-pole Sub-

D socket.

The measuring cards of BMC

Messsysteme GmbH have an in-

ternal connection for analog input

channels, so that measuring signals

with short lines can be lead di-

rectly from the BP16-PC to the

measuring system.

As the BP16-PC does not need

much space the complete elec-

tronic equipment for measuring

data acquisition can easily be in-

stalled in portable PCs.

If using the appropriate amplifiers

also multi-conductor technique can

be realized.

1 Block diagram

BP16 / BP16-PC

2 Assembly

The external version BP16 is installed as an independent measuring amplifier system before a measurement system. If

using a USB measuring system of the meM series for example, the housings of both devices can comfortably be fixed

together at the red frames of the device, so that you get a stable unit.

Afterwards connect the output of the BP16 with the inputs of the measuring system using the short ribbon cable in-

cluded with delivery.

fig. 1 fig. 2

The device is supplied via the power supply connector (9-40V DC) and a power supply unit (e.g. ZU-PW10W) or alter-

natively by the connected measuring system, if providing an auxiliary voltage (see chapter 3.1).

The carrier board BP16-PC is installed in a PC next to a measuring card. Keep in mind to supply the carrier board with

the appropriate measuring amplifiers at the respective channels first before connecting the analog output channels of the

BP16-PC to the internal analog input channels of the bmcm measuring card using the enclosed cable (for assignment

see fig.4).

Sensorik (Kanal 1..16)/

sensors (channel 1..16)

BP16-PC

fig.3 fig.4

Now connect the power supply cable with the 2-pole plug which is next to the analog input plug and at the other side to

the power supply of the PC. Finally mount the card into the PC (see fig. 3).

BP16 / BP16-PC

3 Connections

All connections of the device are available at the front and the back of the BP16 / BP16-PC.

3.1 Power supply

The assignment of the 3-pole DIN plug is shown in the figure on the right. It is located at

the device front of the BP16. There a power supply unit (e.g. ZU-PW10W) can be at-

tached. The BP16-PC is supplied by the PC power supply via a connecting cable.

The following table displays the different possibilities for power supply. Please see for

the correct configuration of jumpers J17-J2. All required jumpers are located above DIL

socket 2 (see fig. 5).

Power source Supply with Meas. system Jumper configuration Notes

3-pole DIN plug 9-40VDC BP16 J17, J18, J20: open

J19: closed

(default configuration)

electrically isolated,

sensor current max. 120mA

PC power supply 12VDC BP16-PC J17, J18, J20: open

J19: closed

(default configuration)

connecting cable included with

delivery,

sensor current max. 120mA

external 5V BP16, BP16-PC J17, J19, J20: open

J18: closed supply must be stabilized,

sensor supply reduced to 50mA

by connected meas-

urement system usually app. 5V,

100mA BP16, BP16-PC J19: open

J17, J20: closed no electrical isolation,

sensor supply reduced to 50mA

3.2 Analog input channels

The 16 analog input channels are connected at the 37-pole Sub-D IN socket of

the BP16 / BP16-PC (BP16: front of device). For each channel separately the

carrier boards BP16 / BP16-PC can be equipped with measuring amplifiers of

the MAL series, so that all inputs are connectable to the most different sensors

or signals.

The following table and figure show the pin assignment of the 37-pole Sub-D

IN socket:

Pin Sub-D 37 IN socket

1(+), 20(-)

...

16(+), 35(-)

36, 37

Analog In 1

...

Analog In 16

+5V (current output for sensor supply)

Temperature reference input (MAL only)

GND for +5V sensor supply

3.3 Analog output channels

The 16 analog output channels are lead out at the 37-pole Sub-D OUT

socket (BP16: back of device). Those are the outputs of the respective

MAL amplifiers or of the bypassed DIL socket.

The following table and figure show the pin assignment of the 37-pole

Sub-D OUT socket:

Pin Sub-D 37 OUT socket

1 .. 16

20 .. 35

18, 19, 37

Analog Out 1 .. 16

alt. 5V supply by measuring system

analog ground (AGND)

alt. 0V supply by measuring system

120

-In1

-In3

-In2

-In4

-In5

-In6

-In7

-In8

-In9

-In10

-In11

-In12

-In13

-In14

-In15

-In16

AGND

AGN

+In1

+In5

+In6

+In7

+In8

+In9

+In10

+In11

+In12

+In13

+In14

+In15

+In16

+5V

n.c.

+In3

+In2

+In4

120

+Out1

+5Out

+6Out

+7Out

+8Out

+9Out

+10Out

+11Out

+12Out

+13Out

+14Out

+15Out

+16Out

+Out3

+Out2

+4Out

+5V (meas. syst.) 0V (meas. syst.

)

n.c.

n.c. n.c.

AGND

BP16 / BP16-PC

4 Layout diagram of the BP16 / BP16-PC

The measuring amplifier sockets on the BP16 / BP16-PC are numbered from channel 1 = 1 to channel 16 = 16 .

When mounting the measuring amplifiers on the carrier board please observe their correct alignment!

= PIN 1

fig. 5

4.1 Pin assignment of the DIL sockets when using MAL measuring amplifiers

The pin assignment of the measuring amplifier sockets is illustrated by the figure on the

right and the following table.

For using the appropriate measuring amplifier please refer to the documentation of the

MAL.

It is also possible to combine standard measuring amplifiers of other manufacturers with

the BP16 / BP16-PC, as soldering bridges for the module configuration are included and

accessible from the underside of the board. Here you can make all settings regarding

additional functions (A1+2, V1-3) of the standard measuring amplifiers. For further

information about their pin assignment please see the documentation of your measuring

amplifier.

Pin Name Function Pin Name Function Pin Name Function

1 n.c. - 9 n.c. - 17 n.c. -

2 n.c. - 10 n.c. - 18 n.c. -

3 +EX + sensor supply 11 GND ground 19 n.c. -

4 +IN HI signal input 12 n.c. - 20 n.c. -

5 -IN LO signal input 13 n.c. - 21 n.c. -

6 -EX - sensor supply 14 n.c. - 22 OUT amplifier output (±5V)

7 n.c. - 15 n.c. - 23 TR temp. reference (MAL-THR only)

8 n.c. - 16 -UB neg. supply (-9V) 24 +UB pos. supply (+9V)

BP16 / BP16-PC

4.2 Using the jumpers

Each DIL socket is provided with two or four plug-in jumpers. Those are numbered according to the number of their

BP16 / BP16-PC DIL socket. The jumpers of one socket have different functions and are distinguished from each other

by an additional letter.

Jumper Function Default factory setting

Jx bypass +IN of socket x closed

Jxb lead out +EX of socket x-1 to 37-pole Sub-D socket open

Jxc bypass -IN of socket x closed

Jxd lead out -EX of socket x-1 to 37-pole Sub-D socket open

If socket x is not supplied with a measuring amplifier, as only voltages are to be measured, this socket has to be by-

passed by closing jumpers Jx and Jxc. Please note that this input then can not be operated differentially. Ex works all

sockets are bypassed.

•Do not use any measuring amplifier on a socket where a jumper is set.

•The pin connectors are very damageable, in case of contact problems replace if necessary.

•Always only close either jumpers Jx, Jxc or Jxb, Jxd. Never close all 4 jumpers at the same time!

If using long cables, 4-wire technique or for precise measurements we recommend to lead out the excitation connec-

tions of the measuring amplifiers to the 37-pole Sub-D socket, in order to avoid interferences. This is achieved by clos-

ing jumpers Jxb and Jxd, which are located at the BP16 / BP16-PC DIL sockets with even numbering. So the excita-

tion connections of channel x-1 are lead out at the 37-pole Sub-D socket replacing the original connections of the fol-

lowing even analog inputs (e.g. +EX1 to pin 2, before: +IN2; -EX1 to pin 21, before: –IN2). In this case the number of

available channels is reduced to 50% at the maximum.

fig.6

The following table shows the pin assignment of the two Sub-D37 sockets, if all excitation connections are used:

Pin Sub-D 37 IN socket

1(+), 20(-)

2(+), 21(-)

3(+), 22(-)

4(+), 23(-)

...

15(+), 34(-)

16(+), 35(-)

36, 37

Analog In 1

excitation voltage for Analog In 1

Analog In 3

excitation voltage for Analog In 3

...

Analog In 15

excitation voltage for Analog In 15

+5V (current output for sensor supply)

temperature reference input

n. c.

analog ground for +5V output

Analog In 2, 4, ..., 14, 16 not available!

BP16 / BP16-PC

5 Connecting examples for using the BP16 / BP16-PC

5.1 2-wire technique with joint supply

The sensor supplies of the measuring amplifiers

are not lead out to the 37-pole Sub-D socket of

the BP16/ BP16-PC (exception: resistance

measurement as 2-wire measurement).

The sensor supply is provided electrically iso-

lated separately from the measuring amplifiers

on the BP16 / BP16-PC.

5.2 4-wire technique

For 4-wire technique the sensor supplies are used by the rele-

vant measuring amplifier. The advantage is that voltage drops

caused by long cables have no influence on the neighbored

channels. However, in this case only 8 channels can be used.

The sensor supply is taken from the amplifier supply. Please

note, that the total of all sensor currents does not exceed

100mA.

Cable shields can be connected at AGND (analog ground) at

one end only.

5.3 Combined 2- and 4-wire technique

It is also possible to connect the channels mixed: in

2-wire as well as in 4-wire technique. Use the 4-

wire technique (here at channel 15) only where you

need a higher accuracy.

Depending on the respective application you will

profit from the optimum use of the BP16 / BP16-

PC.

BP16 / BP16-PC

5.4 Supply of 15 strain gage 350Ohm sensors

For more than eight strain gage 350Ωsensors the power of the

5V excitation (pin 17) is not sufficient. In this case we suggest

the following way of connection, as show in the figure to the

right.

Eight channels with 350Ωstrain gage bridges can be supplied via

pin 17 (5V). One channel (e.g. channel 15) is connected in 4-

wire technique (channel 16 is not connected). With its sensor

supply this channel as well as additional 6 strain gage measuring

bridges can be supplied.

5.5 Thermocouple measurement with type K

The MAL-THR module is prepared for thermocouple measurement

with compensation. Therefore a sensor for temperature reference must

be installed at the cold junction. A semi-conductor sensor LM35DZ is

used with an absolute accuracy of ±1C°. The sensor is supplied by the

BP16 / BP16-PC with 5V and produces a reference voltage for all

measuring channels proportional to the cold-junction.

The thermocouples can be extended using a copper wire. Yet in this case the temperature reference ZU-TR must be

moved to the cold junction, too.

BP16 / BP16-PC

6 Important notes for using the BP16 / BP16-PC

•The BP16 / BP16-PC is only suitable for extra-low voltages, please observe the relevant regulations!

•Only use an electrical isolated power supply unit (with CE).

•All accessible pins are electrostatic devices. Workplace must be conductive during installation.

•The jumpers of the BP16 / BP16-PC are very damageable and not too suitable for use in motion, in case of contact

problems and in steady applications we recommend to solder the jumpers if necessary.

•The BP16 / BP16-PC must only be used in closed housings (for reasons relating to EMC).

•For reasons relating to CE use shielded cables. Connect the shield to ground at one end only. Close open inputs if

possible. ESD voltages on lines may cause malfunction during operation.

•For cleaning use water and mild detergent only. The device is designed to be maintenance-free.

•The device ground and the chassis are electrically connected to the chassis of the PC, which is usually also con-

nected to ground. Be sure to avoid ground loops, since they will cause measuring errors!

•The device must not be used for safety-relevant jobs. With the use of the product the customer becomes manufac-

turer by law and is therefore fully responsible for the proper installation and use of the product. In case of improper

use and/or unauthorized interference our warranty ceases and any warranty claim is excluded.

Do not dispose of the product in the domestic waste or at any waste collection places. It has to be either duly

disposed according to the WEEE directive or can be returned to bmcm at your own expense.

7 Technical data BP16 / BP16-PC (typical at 20°C)

•Sensor supply

Sensor supply at PIN17 of Sub-D37: +5V DC, accuracy ±0.25%, TK 100ppm, electrically isolated

Current: max. 100mA (if supplied with 9..40VDC)

Amplifier supply: app. ±9V max. 100mA, electrically isolated

•General data

Power supply: +9..40VDC or 5V, min. 0.3W, max. 4W

CE standards: EN61000-6-1, EN61000-6-3, EN61010-1; for decl. of conformity (PDF) visit www.bmcm.de

ElektroG // ear registration: RoHS and WEEE compliant // WEEE Reg.-No. DE75472248

Max. permissible potentials: 60V DC acc. to VDE, max. 1kV ESD on lines

Analog connections: 37-pole Sub-D socket for input and output each

Connection for power supply: BP16: 3-pole DIN plug at the device, BP16-PC: 2-pole pin plug on the board

Temperature range: -25°C..+70°C

Relative humidity: 0-90% (not condensing)

Protection type BP16: IP30

Protection type BP16-PC: IP00

Dimensions BP16: 167 x 113 x 30 mm3

Dimensions BP16-PC: 167 x 100 x 25 mm3

Delivery BP16: BP16 device in aluminum housing, 3-pole coupling for power supply, 37-pole analog out cable

Delivery BP16-PC: BP16-PC board, PC bracket, cable for power supply, analog out cable for internal PC connection

Guarantee: 2 years with effect from sales date, damages at product caused by improper use excluded

•Accessories

Measuring amplifiers: miniature measuring amplifiers and converters of the MAL / MAL-ISO series

Plugs // cables: ZU3DIN, ZU37ST // ZUKA37SB, ZUKA37SS

Connector panels: ZU37BB, ZU37CB, ZU37CO

DIN rail sets: ZU-SCHI

Temperature reference: ZU-TR (LM35DZ) with 37-pole Sub-D plug

Power supply: ZU-PW10W (12V, 1A)

Other: gender changer ZU37SS; wasserdichte Gehäuse ZU-PBOX-PG, ZU-PBOX-LAN

Manufacturer: BMC Messsysteme GmbH. Subject to change due to technical improvements. Errors and printing errors excepted. Rev. 4.1 08/18/2010

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