Bmcm AMS42 Manuale utente

AMS42 / AMS84

Amplifier rack for 8 / 16 channels with 5B modules

Features Applications

•5B compatible •for all 5B modules

•AMS42: 8 channels, ½ x 19'' 3HE aluminum

housing (42TE), skid-proof retractable feet

•stand-alone in connection with a

measuring system

•AMS84: 16 channels, 19'' 3HE module metal rack

(84TE)

•AMS84: for 19''-systems

•individual plug-in cassettes installable per channel

•power supply 9..45V

•options: add. 8 channels, carrying handle

With the AMS42/AMS84 (Ampli-

fier Measurement System) BMC

Messsysteme GmbH introduces a

compact 19'' amplifier system in

19'' format accommodating

... 8 (AMS42) or 16 (AMS84)

5B modules ... .

With the 8-channel extension

AMS-EXT8 the number of chan-

nels can optionally be increased to

16 (AMS42) or 32 (AMS84) at the

maximum.

The wide range of available 5B

modules provides for the solution

of most specific measuring tasks

with the AMS42/AMS84.

In particular, the 5B modules al-

low

... potential-free measurement ...,

which is essential for many appli-

cations.

If connected to a PC data acquisi-

tion system or logger, the

AMS42/AMS84 represents a uni-

versal and compact instrument for

the acquisition of measured data.

Besides that, the AMS84 can be

incorporated in a

... 19" 3 height module rack... .

The AMS42/AMS84 is equipped

with

… 8 (AMS42) or 16 (AMS84)

individual cassettes ... .

The relevant 5B module is moun-

ted on the cassette. The suitable

input connector at the cassette

bracket guarantees for the relevant

connection to be available when

exchanging the cassette.

… Power (9-45V) …

is supplied by an external DC

power unit.

Provided with a metal housing the

AMS42/AMS84 impresses with

robustness and is perfect for mo-

bile and rough use.

In addition the AMS42 is equip-

ped with skid-proof retractable

feet.

The plug-in cassettes and all con-

nections are screwed tightly.

A handle (AMS-HANDLE) is op-

tionally available.

Page 1

AMS42/AMS84

The pin assignment of the module

backplane incorporated in the

AMS42/AMS84 corresponds with

those of the 5B modules of Burr-

Brown and Analog Devices, Inc.,

however, an additional 0EXC pin

has been introduced.

Measurements can be effected on

various potentials. The potential

deviations, however, should not

exceed 60V DC (according to

VDE Association of German Elec-

trical Engineers). The outputs

share the same frame potential.

The AMS42/AMS84 is also avail-

able with an integrated data acqui-

sition system (LAN or USB).

For further information please visit

our website at:

http://www.bmcm.de

1 Block diagram

2 Installation

Equip the AMS42/AMS84 with the plug-in cassettes (see chapter 4.4) carrying the required 5B modules. Carefully

push the cassette along the guide bars of the relevant slot until the 7-pole pin connector of the cassette and the pins of

the 5B module are plugged into the corresponding connectors on the AMS backplane.

If using the option AMS-EXT8 the additional cassettes are mounted on the back of the device.

For a tight installation fix the bracket at both ends with screws to the housing. Bridge unneeded slots by a blank bracket

(AMS-K-BLANK) to protect the AMS42/AMS84 against outside influences.

If the AMS84 is mounted to a 19'' rack system, first the relevant input wiring should be prepared before attaching the

device to the rack system with screws.

Now connect your data acquisition system to the 37-pole Sub-D female connector and an external power unit to the 3-

pole DIN coupling for 9-45V power supply (use a supply cable with a cross sectional area >1mm2). Finally turn on the

AMS42/AMS84 by pressing the switch to "1" (ON).

The signals are connected at the specific female connector of the respective AMS cassette bracket.

•To change the cassettes the power of the AMS device must be turned off!

•If the AMS is operated standalone additional grounding to enhance shielding is recommended but not man-

datory.

Page 2

AMS42/AMS84

3 Connections and assignments

Schalter

switch

LED

off

3-pol. DIN Stecker

3-pole DIN plug

37-pol. Sub-D Buchs

37-pole Sub-D female

All available connectors and operating elements of the AMS42/

AMS84 are accessible on the right-hand side of the device front.

3.1 Switch and LED

With the switch the AMS42/AMS84 is turned on (press "1") and

off (press "0"). The LED directly below indicates the operation of

the device.

3.2 Power supply

Via the 3-pole DIN plug the AMS42/AMS84 is supplied with

power (9-45V DC).

GND

9...45V

Pin Assignment

1 n. c.

2 GND

3 9..45V DC

3.3 Analog channels

The AMS42/AMS84 allows for the connection of 8 (AMS42)

or 16 (AMS42) analog signals. They are connected to the

amplifier inputs available at the respective connectors of the

cassette brackets. Their assignment is illustrated in the data

sheet of the AMS-K-xxx cassettes. To connect a PC data acqui-

sition system these analog outputs are led out to the 37-pole

Sub-D socket.

Pin Assignment AMS42 Assignment AMS84

1..8 Analog OUT 1..8 Analog OUT 1..8

9..16 n. c. Analog OUT 9..16

17..19 n. c. n. c.

20..27 Analog Ground

(AGND) channel 1..8 Analog Ground

(AGND) channel 1..8

28..35 n. c. AGND channel 9..16

36..37 n. c. n. c.

•The housing of the 37-pole Sub-D socket is connected to the AMS housing (and ground eventually).

•If the device features 16 or more channels, the ground of the first eight channels is not electrically connected

to the ground of the next ( and further) eight channels.

Depending on the application, the shield of the analog input cables can be applied to ground or 0V. Be sure to connect

at one end of the cable only. Run the signal ground separately if possible. Lay input cable separately if possible.

The output cable can be laid with the same signal ground and shield in the case of short distances (Long distances may

lead to cross talk!).

AMS42/AMS84

4 AMS backplane

The AMS backplane provides 8 slots for 5B modules and the AMS-K-xxx plug-in cassettes carrying the 5B modules. In

the AMS84 two backplanes are integrated. If the optional add-on AMS-EXT8 is used, 8 (AMS42) or 16 (AMS84) slots

each are available at the front and at the back of the device.

12345678

Masseverbindungswiderstand

ground-to-ground resistance

Sicherung 1,6Atr.

fuse 1.6 Atr.

-SE

-EX

0EX

+EX

+SE

5B-Modulsteckplatz

5B module slot

4.1 Ground-to-ground resistance

The ground-to-ground resistance is needed when the output ground is not electrically connected with the power ground.

If the jumper (see fig. above) on the analog backplane is closed, the output switches of the modules are switched

through.

In the case of electrically connected systems (e.g. PC), this jumper represents a high-resistance bridge (1kΩ) and

may generate a hum loop!

4.2 Fuse

The fusing of the AMS backplane is effected on the backplane (see fig. chapter 4) with one reversible semi-conductor

fuse. In case of overload it turns of. To make the fuse work effectively again, first remove the cause for overload before

disconnecting the power supply of the AMS42/AMS84.

I/O COM - 19

+5V - 17

0 EX - 7

LO - 5

-EX - 3

-SE - 1

22 - READ/EN

16 - POWER COM

- V

out

6 - HI

4 - +EX

2 - +SE

4.3 Module pin assignment

The figure on the right shows the pin assignment of the 5B module slots on

the AMS backplane. It corresponds with the 5B standard of Analog De-

vices®, BURR BROWN®, etc.

An additional 0EX PIN (Pin 7) has been introduced, which is particularly

suitable for ungrounded shielding or as reference point for symmetrical

supply. This is a bmcm specific assignment (MA-xxx), in modules by Ana-

log Devices®and BURR BROWN®this pin is not connected.

AMS42/AMS84

4.4 Using the cassettes

The amplifier system can individually be equipped with 8

(AMS42) or 16 (AMS84) plug-in cassettes. With the option AMS-

EXT8 a package of 8 extra channels can be added, so that the

AMS42 can be extended to 16 channels, the AMS84 to 32 chan-

nels at the maximum.

Each cassette is equipped with the relevant 5B module and suitable

input connector, thus providing the relevant connection to be avail-

able when exchanging the cassette.

Various types are available and almost all of them can be com-

bined with the relevant 5B modules. In case of thermocouple cas-

settes a cold junction compensation can be installed on the cas-

sette. In the case of current modules, a relevant shunt can be in-

stalled. For detailed information about the plug-in cassettes please

see the AMS-K-xxx data sheet.

The cassettes are connected to the AMS backplane via 7-pole pin

connectors, leading the input signals connected at the cassette

bracket to the backplane. The assignment of the 7-pole female

connector on the board is as follows:

Pin Assignment

1. +SE

2 +EX

3 HI

4 0EX

5 LO

6 -EX

7 -SE

-SE - 7

-EX

0EX

+EX

+SE

- 6

- 5

- 4

- 3

- 2

- 1

AMS42/AMS84

5 Important notes for using the AMS42/AMS84

•The AMS42/AMS84 is only suitable for extra-low voltages – observe the relevant regulations!

•For power supply, an electrically isolating power unit (with CE) must be used.

•For cleaning the device use water and mild detergent only.

•The device is designed to be maintenance-free. For calibration the device must be returned to BMC Messsysteme

GmbH.

•Open inputs should be closed.

•With the module screws when mounting the cassettes you make a connection between power supply ground and

chassis of the device.

•The device must not be used for safety-relevant jobs. By using or processing this product the customer becomes

manufacturer by law and therefore is responsible for the proper installation, use and handling of the product. In the

case of improper use 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.

6 Technical data AMS42/AMS84 (typical at 20°C and 24V supply)

•Electrical data

Power supply: +9..45V DC, ±5%, max. 20W

Electrical isolation: depending on the module in use

Max. permissible potentials: max. ±60V DC (VDE)

•General

Signal connection: at different connectors (Phoenix, Binder, BNC, Thermo) on the cassette brackets

Temperature range: -25°C..+70°C

Relative humidity: 0 - 90% (not condensing)

Protection type: IP20

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

Chassis dimensions (W x H x D): AMS42: 23.5cm x 13.2cm x 25.6cm; AMS84: 48.3cm x 13.2cm x 25.6cm (incl. mounting brackets)

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

•Available accessories

AMS-K-BIN5: cassette and bracket with 5-pole Binder socket (712 series)

AMS-K-BLANK: blank bracket

AMS-K-BNC: cassette and bracket with BNC socket

AMS-K-CO5: cassette and bracket with 5-pole terminal connector

AMS-K-THK: cassette and bracket with thermocouple socket (type K)

AMS-EXT8: extension of 8 extra channels (accessible on the back of the device)

Other accessories: desktop power supply ZU-PW70W (24V, 2.92A DC) with cable set;

connecting cables ZUKA37SB, ZUKA37SS, retractable carrying handle AMS-HANDLE

Manufacturer: BMC Messsysteme GmbH. Subject to change due to technical improvements. Errors and printing errors excepted. Rev. 4.0 06/19/2008

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