Yaskawa Remote Analog I/O PCB for use with Microtrac DSD LAN - Manual (Page 3)

ISOLATED ANALOG I/O
The ANIO has four sockets (J3 to J6
for I/O module 0 to 3) that will support up
to four 5B series type isolated analog I/O
modules. These I/O modules come in a
variety of configurations including input
range selection from thermocouple, 0-50
millivolt, 0-10 Volt, +/- 5 Volt, or +/- 10
Volt, and outputs that provide 0-20
milliamp or 4-20 milliamp.
The ANIO provides an analog signal
of from -5VDC to +5VDC to the output
modules and expects an analog signal of
from -5VDC to +5VDC to or from the I/O
modules. Therefore, the output modules
condition an analog signal of from -5VDC to
+5VDC to provide an external analog signal,
and the input modules condition external
analog signals to provide an analog signal of
from -5VDC to +5VDC. Some output
modules expect an input analog signal of
from 0VDC to +5VDC and some input
modules provide an output analog signal of
from 0VDC to +5VDC. Therefore, the
modules that intereact with the ANIO with
an analog signal in the range of from 0VDC
to +5VDC utilize only half of the available
resolution.
The analog I/O module’s HI and LO
signals (pins 6 and 5, respectively, of the
module) are brought to terminals for external
connection. A shield tie point terminal is also
provided for each I/O module. Each shield
tie point terminal is isolated from the other
PCB circuitry and is provided as a tie point
convenience. The connections to the modules
can be made as follows:
Module Connection Function
Name
U19
TB2 pin 1 LO, pin 5 of module
TB2 pin 2 HI, pin 2 of module
TB2 pin 3 Shield tie point, isolated
U20 TB3 pin 1 LO, pin 5 of module
TB3 pin 2 HI, pin 2 of module
TB3 pin 3 Shield tie point, isolated
U21 TB4 pin 1 LO, pin 5 of module
TB4 pin 2 HI, pin 2 of module
TB4 pin 3 Shield tie point, isolated
U22 TB5 pin 1 LO, pin 5 of module
TB5 pin 2 HI, pin 2 of module
TB5 pin 3 Shield tie point, isolated
Reference should be made to the I/O module
data sheets in order to properly connect the
desired I/O module to its source of input or to
its output load.
3
RD 799-10