AMS42/84

5B Amplifier System

Amplifier Technology at its Best.

Compact or 19 Inch.

Get your amplifier technology wrapped up with

the AMS42/84. Available in a robust aluminum

housing as a mobile tabletop unit (AMS42) with

skid-proof, tip-up feet for 8 channels or as a

16-channel stationary version (AMS84) for 19''

rack systems.

Modular Concept.

Equip Individually. Be Flexible.

The AMS device is equipped with cassettes, on

which the required 5B measuring amplifiers are

mounted. The variety of available 5B modules

allows for the optimum adaptation of the

AMS42/84 to any special measuring task.

Choose Connector.

Mount 5B Amplifier. Done.

The available plug-in cassettes have different

connectors on the front panel. Depending on

the sensor or signal to be connected, the

suitable cassette can be chosen. The 5B

module only has to be fixed on the cassette

now and be integrated in the AMS system.

Clearly Safe.

Most of the 5B modules feature galvanic

isolation between the channels and from the

data acquisition and control system. This

perfectly protects the whole system against

high potentials and interferences.

Well Supplied.

The AMS42/84 is operated with 9-40V via an

external power supply.

Connection to the DAQ System.

The amplifier outputs are available at a D

Sub37 female connector. They are connected

to the input lines of a data acquisition system.

Combining the AMS42/84 with a measuring

card or DAQ system from bmcm makes a

powerful measurement system.

Accessories. Just Makes it Easier.

To individually equip the AMS devices, various

5B modules and plug-in cassettes as well as

other accessories (e.g. external power supply,

carrying handle, connection cable) are

provided.

Versions and Options.

Something for Everybody.

AMS42/84 versions with an integrated DAQ

system (USB, LAN) are also available. With the

8-channel extension AMS-EXT8. the number of

channels can optionally be increased to 16 in

the AMS42.

1 Installation

1.1 Assembly

a) Equip the AMS42/84 with the plug-in cassettes (see chapter 4.2) carrying the required 5B

modules.

b) Carefully push the cassette along the guide bars of the relevant slot until the 7-way pin

connector of the cassette and the pins of the 5B module are plugged into the corresponding

connectors on the AMS backplane.

c) If using the AMS42 with the option AMS-EXT8 (see chapter 4.4), the additional cassettes are

mounted on the back of the device.

d) For a tight installation, fix the front panel at both ends with screws to the housing. Bridge

unneeded slots by a blank panel (AMS-K-BLANK) to protect the device against outside

influences.

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

before attaching the device to the rack system with screws.

1.2 Software Installation and Start-up Procedure

a) Connect your PC data acquisition system to the 37-pin D-Sub female.

b) Attach an external power unit to the 3-pin DIN coupling for 9-40V power supply (use a supply

cable with a cross sectional area >1mm2) and turn on the AMS42/84 by pressing the switch to

"1" (ON) (see chapter 2.1 and 2.2).

c) Signals are attached at the specific connector of the respective AMS cassette panel.

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

• If the AMS system is operated standalone, additional grounding to enhance shielding is

recommended but not mandatory.

2 Connections / Assignments

All available connectors and operating elements of the

AMS42/84 are accessible on the right-hand side of the

device front.

2.1 Switch and LED

The AMS42/84 is turned on (press "1") and off (press "0")

with the switch.

The green LED "ON" indicates the operation of the device.

2.2 Power Supply "DC In"

The AMS device is supplied with power (9..40V) via the 3

pin DIN plug. A power supply unit ZU-PW40W (24V, 1.67A

DC) is optionally available.

2.3 Analog Channels

8 (AMS42) or 16 (AMS84) analog signals can be connected to the

amplifier inputs available at the respective connectors of the cassette

panels.

Their assignment is illustrated in the data sheet of the AMS-K cassettes.

To connect a PC data acquisition system, these analog outputs are led

out to the 37-pin D-Sub female.

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 housing of the D-Sub37 female is connected to the AMS housing (and ground eventually).

• If the device features 16 channels (AMS84. AMS42 + AMS-EXT8), the ground of the first eight

channels is not electrically connected to the ground of the next eight channels.

3 AMS Backplane

The AMS-backplane provides 8 slots for 5B modules and the AMS-K plug-in cassettes (see chapter

4.2) carrying the 5B modules. Two backplanes are integrated in the AMS84.

If the optional add-on AMS-EXT8 (see chapter 4.4) is used, eight slots each are available on the front

and on the back of the AMS42.

3.1 Ground-to-Ground Resistance

Ideally, the output ground is not electrically connected with the power supply ground. If, however, a

connection to ground is necessary (e.g. to use the output switch in the 5B module), the 2-pin jumper

(see fig. above) must be closed.

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

bridge (1k ) and may generate a hum loop!

3.2 Module Pin Assignment

The pin assignment on the right shows the top view of the module

backplane (see chapter 3).

The pin assignment corresponds to the 5B modules of Analog

Devices®, BURR BROWN® etc. However, an additional 0EX pin has

been introduced, which is particularly suitable for ungrounded

shielding. This is a specific assignment of BMC Messsysteme

GmbH. The 0EX pin is not connected in modules of other

manufacturers.

3.3 Fuse

The fusing of the AMS backplane is effected on the backplane (see chapter 3) with one reversible

semi-conductor fuse. In case of overload, it turns off. To make the fuse work effectively again, first

remove the cause for overload before disconnecting the power supply of the AMS42/84.

3.4 Connection for AMS Cassettes

The cassettes are connected to the AMS backplane via 7-way pin connectors,

leading the input signals connected at the cassette panel to the backplane. The

assignment of the 7-way female connector on the board is illustrated in the figure on

the right-hand side.

4 Supplementary Products for AMS42/84

4.1 5B Modules (MA Line)

The 5B measuring amplifiers from bmcm allow for the professional

signal adjustment to a data acquisition system.

The amplifier output is 5V or 0..5V. Most of the modules are

electrically isolating and provide sensor supply.

The following 5B modules from bmcm are available:

4.2 Plug-in Cassettes (AMS-K Line)

The amplifier system can be individually equipped with 8

(AMS42-USB) or 16 (AMS84) plug-in cassettes.

Each cassette is equipped with the relevant 5B module and

suitable input connector.

The suitable input connector on the front panel guarantees for

the relevant connection to be available when exchanging the

cassette.

The following cassettes are available:

Product

Description

AMS-K-BIN5

cassette with panel and 5-pin Binder female connector (712 series)

AMS-K-BLANK blank panel

AMS-K-BNC

AMS-K-CO5

cassette with front panel and BNC female connector

cassette with front panel and 5-pin terminal connector

AMS-K-THK

cassette with front panel and thermocouple socket (type K)

4.3 AMS-HANDLE2. AMS-FOOT

For mobile use, the AMS42/84 can be equipped with two stable

metal handles at the housing frame (AMS-HANDLE2).

If the AMS84 is not installed in a 19'' rack, a set of tip-up feet

(AMS-FOOT) can optionally be ordered.

4.4 AMS-EXT8

With the add-on option AMS-EXT8. 8 additional analog channels are

available at the back of the AMS42. In this case the device features max. 16

channels.

The analog outputs are accessible at a second D-Sub37 female with the

same assignment as the standard D-Sub37 female of the AMS device (see

chapter 2.3).

5 Important Notes for Using the AMS42/84

AMS42/84

• The device is only suitable for extra-low voltages - please observe the relevant regulations! For reasons

relating to EMC, it must only be used in closed PC housings.

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

• Only use non-solvent detergents for cleaning. The product is designed to be maintenance-free.

• For calibration purposes, the device must be returned to BMC Messsysteme GmbH.

• Use shielded cables for reasons relating to CE. Connect the shield to ground at one end only. Close open

inputs if possible.

• When mounting the cassettes, a connection between power supply ground and chassis of the device is made

via the module screw.

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

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

case of improper use and/or unauthorized interference, our warranty ceases and any warranty claim is

excluded