47
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7.3 ANALOG OUTPUT
7.3.1
–
Introduction
Two ranges of analog output (0-10 V y 4-20 mA) can be incorporated to the MICRA E by means of an additional card, either
the NMV card for voltage output or the NMA card for current output, which is installed on the meter's main board via plug-in
connector M3, both cards, cannot be used simultaneously.
The outputs are opto-isolated with respect to the signal input and the power supply.
The optional board provides a two terminal connector [(+) and (-)] that drives out a signal variation from 0 to 10V or from
4mA to 20mA proportional to a user-defined display range.
This way, the meter is furnished with a signal that can be used to control variables and operates at each moment
proportionally to the magnitude of the effect under control.
These signals can also be used to transmit display information to a variety of terminal equipment such as graphic recorders,
controllers, remote displays or other devices that accept input data in analog form.
The instrument will detect the type of option that has been installed and will operate in accordance.
The display values producing the full scale output (OUT-HI and OUT-LO) are also introduced via front-panel buttons in the
same programming module. The analog output then follows the display variation between the HI and LO programmed
points.
The output signal can be set up for reverse action by programming the low display for the high output (OUT-HI) and the
high display for the low output (OUT-LO).
7.3.2
–
Installation of NMA or NMV option
Lift out the electronics assembly from the case and use a screwdriver to pull on the junctions between the case and the
grey-marked area to detach it from the case. The so performed orifice will allow the analog output board connector be
brought out at the rear of the instrument. Install the circuit board so that the lower pin fits into the corresponding main
board insertion slot and push down to plug the M3 option connector in the main board M3 location. If the instrument is to be
installed in high vibrating environments, it is recommended to solder the card to the main board making use of the copper
tracks on both sides of the card pin and around the main board hole on its solder side.
7.3 ANALOG OUTPUT
7.3.1
–
Introduction
Two ranges of analog output (0-10 V y 4-20 mA) can be incorporated to the MICRA E by means of an additional card, either
the NMV card for voltage output or the NMA card for current output, which is installed on the meter's main board via plug-in
connector M3, both cards, cannot be used simultaneously.
The outputs are opto-isolated with respect to the signal input and the power supply.
The optional board provides a two terminal connector [(+) and (-)] that drives out a signal variation from 0 to 10V or from
4mA to 20mA proportional to a user-defined display range.
This way, the meter is furnished with a signal that can be used to control variables and operates at each moment
proportionally to the magnitude of the effect under control.
These signals can also be used to transmit display information to a variety of terminal equipment such as graphic recorders,
controllers, remote displays or other devices that accept input data in analog form.
The instrument will detect the type of option that has been installed and will operate in accordance.
The display values producing the full scale output (OUT-HI and OUT-LO) are also introduced via front-panel buttons in the
same programming module. The analog output then follows the display variation between the HI and LO programmed
points.
The output signal can be set up for reverse action by programming the low display for the high output (OUT-HI) and the
high display for the low output (OUT-LO).
7.3.2
–
Installation of NMA or NMV option
Lift out the electronics assembly from the case and use a screwdriver to pull on the junctions between the case and the
grey-marked area to detach it from the case. The so performed orifice will allow the analog output board connector be
brought out at the rear of the instrument. Install the circuit board so that the lower pin fits into the corresponding main
board insertion slot and push down to plug the M3 option connector in the main board M3 location. If the instrument is to be
installed in high vibrating environments, it is recommended to solder the card to the main board making use of the copper
tracks on both sides of the card pin and around the main board hole on its solder side.
