IMC CANSAS - Bridge2

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Special module-specific characteristics 137

4.7.1.2 BRIDGE2

Bridge amplifier module BRIDGE2

2 physical inputs are available. Like all imc CANSAS modules, this module has a programmable red/green

LED. Unlike the other modules, it additionally has two more yellow LEDs which can be used, by means of

a special function, to indicate status information. If the status information is only intended for

transmission on the CAN-bus, the two yellow LEDs can be used for other output purposes.

The user of a bridge amplifier module needs to know certain information: are Channels 1 and 2 balanced

or not? Or are the balancing values which are stored in the modules the ones for Channels 1 and 2? Is a

balancing or shunt calibration currently being performed? The user has access to all this information.

Such info can either be transmitted by CAN-bus in a status word in a message, and then evaluated at

another location, or the information is indicated visibly by the additional yellow LEDs using the special

function "Output status on LED". In order to be able to express many different states using just one LED,

there are a number of different flashing patterns (LED on, LED off, LED blinks slow, normal, or fast, long

flash on and short blink off or vice-versa). The various blinking patterns can be assigned to different

states as desired. Module status can be indicated either for each of the two channels separately or for

both together. It is recommended to use one yellow LED for the status info of Channel 1 and the other

LED for Channel 2's info. The function "Output status on LED" can only be applied to the two extra yellow

LEDs. See below in the functions' reference for a description of this function.

By default, the bridge amplifier module is not yet balanced when it is started. If balancing values are

already stored, they are applied. It is generally recommended to have balancing performed unless the

stored balancing values are to be used for a specific application. Balancing can be triggered either via the

CAN-bus by pressing the module button. In order to be able to recognize the module's balance status, the

use of the function "Output status to LED" is recommended. By this means, the module's status can be

recognized by the pattern of LED flashing (for instance: LED off: no balancing values present; LED flashes

slowly: stored balancing values applied; LED on: balancing performed successfully; LED flashing quickly:

balancing currently being performed...).

The additional functions "Output status word", "Switch status", "Output status on LED" and "Short circuit

status" are available to the bridge amplifier module. See below in the functions' reference for

descriptions of these functions.

For a sample application, refer to the section on the isolated amplifier module.

Other manuals for IMC CANSAS