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AM16/32B Relay Analog Multiplexer

4.2.1 COM Terminals

A CABLE3CBL, CABLE4CBL, MUXSIGNAL, or CABLE5CBL cable is

used to connect the datalogger to the COM terminals. The CABLE3CBL is

recommended when the AM16/32B is used in the 4x16 mode. Either the

CABLE4CBL or MUXSIGNAL is typically used for the 4x16 mode. The

CABLE5CBL is recommended for the 4x16 mode when it is desirable to

connect both shields.

The four terminals dedicated to multiplexer-datalogger connection are located

under the blue “COM” next to the mode switch. The terminals are labeled:

ODD H, ODD L, EVEN H, and EVEN L. In “4x16” mode the AM16/32B

maintains the four “COM” terminals electrically isolated from one another. In

“2x32” mode the AM16/32B maintains an internal connection between ODD

H and EVEN H and between ODD L and EVEN L.

Common “

” terminals are provided next to the COM ODD and COM EVEN

terminals. They bus internally to the other thirty-two “

” terminals on the

AM16/32B and are connected at all times (i.e., not switched). Their function is

to provide a path to ground for sensor cable shields. A “COM

” terminal

should be wired to datalogger ground via the cable’s shield according to the

following table.

COM

ODD

4X16

EVEN

MUXSIGNAL

SHIELD

CR10X

CR23X

CR1000

CR3000,

CR5000

21X

CR7

CR800,

CR850

E1-E3 EX1-EX4 EX1-EX3 or

VX1-VX3

VX1-VX4 EXCITATION SWITCHED

ANALOG OUT

EX1-EX2 or

VX1-VX2

SE3 SE3 SE3 SE3 2H 2H SE3

SE2 SE2 SE2 SE2 1L 1L SE2

SE1 SE1 SE1 SE1 1H 1H SE1

CABLE

FIGURE 6. Typical AM16/32B to Datalogger Signal Hookup (4x16 Mode)

using CABLE4CBL or MUXSIGNAL Cable

4.2.2 Sensor Input Terminals

The terminals for sensor attachment are divided into 16 groups (panel switch

set to “4x16”) or into 32 groups (panel switch set to “2x32”). The groups

consist of four or two Simultaneously Enabled Terminals (SETs). With panel

switch set to “4x16” mode the blue channel numbers apply. The SETs are

numbered starting at 1 (1H, 1L, 2H, 2L) and continuing until SET 16 (31H,

31L, 32H, 32L).

In “4x16” mode the odd numbered terminals (example: 5H, 5L) are relay

switched to the COM ODD terminals while the even terminals (6H, 6L) are

switched to the COM EVEN terminals. When activated by the RES line being

high, as the AM16/32B receives clock pulses from the datalogger, each SET of

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 49 50

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Campbell AVW1 Especificaciones Pagina 17

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