GMBHR168 Datasheet, PDF (48/70 Pages) List of Unclassifed Manufacturers – Mini BLOCK Housing 16 opto inputs, 8 Relay outputs

grifo^®
ITALIAN TECHNOLOGY
INPUTS CONFIGURATION AS NPN OR PNP
The 16 optocoupled inputs of GMB HR168 can be configured as NPN or PNP according to the
connection of jumpers J1 and J2.
Power supply of optocoupling sections is provided externally through connector CN5 (please refer
to paragraph "ELECTRIC FEATURES" and to paragraph of connector CN5 for further information);
such power supply is rectified by a specific circuitery that generates two voltages: +Vopto and GND
opto.
Connection of jumper J1 and J2 determines which of these two voltages will be present at common
pin of optocoupled inputs (pin 9 of CN1 and CN2, that is COM1 and COM2), while the other voltage
will be present at all other pins of CN1 and CN2.
This allows to close an optocoupled input simply by connecting it to its common pin.
Jumpers J1 and J2 always must be moved together at the same time.
They can be connected only both in position 1-2 or both in position 2-3.
If one of the above rules is not respected, GMB HR168 could be damaged, so it is suggested to move
jumpers J1 and J2 only when power supply is off.
As already printed in table of figure 33, connecting J1 and J2 in position 1-2 configures inputs as type
NPN, while connecting J1 and J2 in position 2-3 configures inputs as type PNP.
About polarity of pins COM1 and COM2: as type NPN COM1 and COM2 are connected to +Vopto,
while as type PNP COM1 and COM2 are connected to GND.
BACK UP
GMB HR168 can be ordered with an optional Real Time Clock already installed (option .RTC).
This component provides hours, minutes, seconds, dat, month and year and features a 256 bytes
SRAM.
On board is installed a Lithium battery to keep the time and the content of SRAM even when power
supply is off, if jumper J9 is connected. By default, jumper J9 is NOT connected.
For further information, please refer to paragraph "ELECTRIC FEATURES".
ANALOG INPUT
GMB HR168 features an interface for one analog input that can accept an input voltage in a variable
range according to connection of jumper J11: in position 1-2 the analog input signal is filtered, so
that its stability is increased, while when J11 is in position 2-3, also a voltage divider acts on the
signal, dividing its amplitude by 4.
As shown in figure 24, such analog interface is based on high precision passive components that are
selected during mounting phase to optimize signal acquisition.
Anyway, to compensate eventual tollerances and thermal drifts, the best thing is to make a software
calibration of the signal acquired, that is to calculate a correction coeffincent using a reference signal,
then to use such coefficent for successive analog signal acquisitions.
Examples developed for grifo^® Mini Modules show some calibration techniques that the user can
modify according to the application's needs.
Please refer also to figure 4, if you are using a grifo^® Mini Modules please refer to the combination
manual.
Page 40
GMB HR168 Rel. 5.00