Yaskawa Remote Thumbwheel I/O PCB for use with Microtrac DSD LAN - Manual

INTRODUCTION
The Remote Thumbwheel I/O PCB
(TWIO) adds I/O capability to a Remote I/O
Controller LAN Node PCB (RIO) in a
MicroTrac DSD system. The TWIO is con-
nected to the RIO through use of an I/O
expansion bus. Upon power-up, the RIO
will realize that the TWIO is present, and
begin utilizing the added I/O.
This document explains the hard-
ware of the Remote Thumbwheel I/O PCB
(TWIO) and how to utilize its I/O capability.
HARDWARE DESCRIPTION
POWER REQUIREMENTS
The power connector on the RIO is
used to supply the RIO and the Remote I/O
PCBs with power. The RIO supplies power
to each of the Remote I/O PCBs through the
I/O expansion bus. The power require-
ments for each of the voltages connected to
the RIO, therefore, include the power drawn
by the RIO and the power drawn by each of
the Remote I/O PCBs.
In order to select a properly sized
power supply, the current (I) requirements
of the PCBs for each of the voltages must be
known. The I requirements for the TWIO
are as follows:
I for +5 VDC = (I of TWIO) + (I of external
loads)
= (223 maA) + (0 mA)
I for +15 VDC = (I of TWIO) + (I of external
loads)
= (0 mA) + (0 mA)
I for -15 VDC = (I of TWIO) + (I of external
loads)
= (0 mA) + (0 mA)
I for +24 VDC = (I of TWIO) + (I of external
loads)
= (108 mA) + (0 mA)
RD 873-10
Effective 6/18/90
1
REMOTE DEVICE
USER REFERENCE SHEET
FOR
REMOTE THUMBWHEEL I/O [INPUT/OUTPUT] PCB
(TWIO)
Part No. 46S02873-0010
For use on MicroTrac DSD Local Area Network