Octagon Systems 5624 Manual de usuario
O C T A G O N
S Y S T E M S
Embedded PCs For Extreme Environments
5624 Isolated Digital I/O Card
User’s Manual
3702(0102)
2
Copyright
Micro PC™, PC SmartLINK™, CAMBASIC, Octagon Systems
Corporation®, the Octagon logo and the Micro PC logo are trademarks
of Octagon Systems Corporation.
Disclaimer
Copyright 2002—Octagon Systems Corporation. All rights reserved.
However, any part of this document may be reproduced, provided that
Octagon Systems Corporation is cited as the source. The contents of
this manual and the specifications herein may change without notice.
The information contained in this manual is believed to be correct.
However, Octagon assumes no responsibility for any of the circuits
described herein, conveys no license under any patent or other right,
and makes no representations that the circuits are free from patent
infringement. Octagon makes no representation or warranty that
such applications will be suitable for the use specified without further
testing or modification.
Octagon Systems Corporation general policy does not recommend the
use of its products in life support applications where the failure or
malfunction of a component may directly threaten life or injury. It is a
Condition of Sale that the user of Octagon products in life support
applications assumes all the risk of such use and indemnifies Octagon
against all damage.
6510 W. 91st Ave.
Westminster, CO 80031
Technical support: 303–426–4521
Telephone: 303–430–1500
FAX: 303–426–8126
Web site: www.octagonsystems.com
3
IMPORTANT!
Please read the following section before installing your product:
Octagon’s products are designed to be high in performance while
consuming very little power. In order to maintain this advantage,
CMOS circuitry is used.
CMOS chips have specific needs and some special requirements that
the user must be aware of. Read the following to help avoid damage to
your card from the use of CMOS chips.
≡≡Using CMOS circuitry in industrial control
Industrial computers originally used LSTTL circuits. Because many
PC components are used in laptop computers, IC manufacturers are
exclusively using CMOS technology. Both TTL and CMOS have
failure mechanisms, but they are different. Described below are some
of the failures which are common to all manufacturers of CMOS
equipment. However, much of the information has been put in the
context of the Micro PC.
Octagon has developed a reliable database of customer–induced, field
failures. The average MTBF of Micro PC cards exceeds 11 years, yet
there are failures. Most failures have been identified as customer–
induced, but there is a small percentage that cannot be identified. As
expected, virtually all the failures occur when bringing up the first
system. On subsequent systems, the failure rate drops dramatically.
•Approximately 20% of the returned cards are problem–free. These
cards, typically, have the wrong jumper settings or the customer
has problems with the software. This causes frustration for the
customer and incurs a testing charge from Octagon.
•Of the remaining 80% of the cards, 90% of these cards fail due to
customer misuse and accident. Customers often cannot pinpoint
the cause of the misuse.
•Therefore, 72% of the returned cards are damaged through some
type of misuse. Of the remaining 8%, Octagon is unable to
determine the cause of the failure and repairs these cards at no
charge if they are under warranty.
4
The most common failures on CPU cards are over voltage of the power
supply, static discharge, and damage to the serial and parallel ports.
On expansion cards, the most common failures are static discharge,
over voltage of inputs, over current of outputs, and misuse of the
CMOS circuitry with regards to power supply sequencing. In the case
of the video cards, the most common failure is to miswire the card to
the flat panel display. Miswiring can damage both the card and an
expensive display.
•Multiple component failures: The chance of a random
component failure is very rare since the average MTBF of an
Octagon card is greater than 11 years. In a 7 year study, Octagon
has never found a single case where multiple IC failures were not
caused by misuse or accident. It is very probable that multiple
component failures indicate that they were user–induced.
•Testing “dead” cards: For a card that is “completely
nonfunctional”, there is a simple test to determine accidental over
voltage, reverse voltage or other “forced” current situations.
Unplug the card from the bus and remove all cables. Using an
ordinary digital ohmmeter on the 2,000 ohm scale, measure the
resistance between power and ground. Record this number.
Reverse the ohmmeter leads and measure the resistance again. If
the ratio of the resistances is 2:1 or greater, fault conditions most
likely have occurred. A common cause is miswiring the power
supply.
•Improper power causes catastrophic failure: If a card has
had reverse polarity or high voltage applied, replacing a failed
component is not an adequate fix. Other components probably
have been partially damaged or a failure mechanism has been
induced. Therefore, a failure will probably occur in the future. For
such cards, Octagon highly recommends that these cards be
replaced.
•Other over–voltage symptoms: In over–voltage situations, the
programmable logic devices, EPROMs and CPU chips, usually fail
in this order. The failed device may be hot to the touch. It is
usually the case that only one IC will be overheated at a time.
•Power sequencing: The major failure of I/O chips is caused by
the external application of input voltage while the Micro PC power
is off. If you apply 5V to the input of a TTL chip with the power
off, nothing will happen. Applying a 5V input to a CMOS card will
cause the current to flow through the input and out the 5V power
pin. This current attempts to power up the card. Most inputs are
rated at 25 mA maximum. When this is exceeded, the chip may be
damaged.
5
•Failure on powerup: Even when there is not enough current to
destroy an input described above, the chip may be destroyed when
the power to the card is applied. This is due to the fact that the
input current biases the IC so that it acts as a forward biased
diode on powerup. This type of failure is typical on serial interface
chips but can apply any IC on the card.
•Under rated power supply: The board may fail to boot due to
an under rated power supply. It is important that a quality power
supply be used with Octagon Systems cards that has sufficient
current capacity, line and load regulation, hold up time, current
limiting, and minimum ripple. It is extremely import to select a
supply that ramps up in 10ms or less. This assures that all the
circuitry on the CPU Cards sequences properly and avoids system
lockup.
•Excessive signal lead lengths: Another source of failure that
was identified years ago at Octagon was excessive lead lengths on
digital inputs. Long leads act as an antenna to pick up noise.
They can also act as unterminated transmission lines. When 5V is
switch onto a line, it creates a transient waveform. Octagon has
seen sub-microsecond pulses of 8V or more. The solution is to
place a capacitor, for example 0.1 µF, across the switch contact.
This will also eliminate radio frequency and other high frequency
pickup.
6
Table of Contents
Copyright .................................................................................................................2
Disclaimer................................................................................................................2
≡Using CMOS circuitry in industrial control............................................................3
Table of Contents...........................................................................................................6
List of Figures................................................................................................................7
List of Tables .................................................................................................................8
Chapter 1: Overview.....................................................................................................9
≡Description...............................................................................................................9
Chapter 2: Installation...............................................................................................10
≡Hardware installation ...........................................................................................10
Using a Micro PC card cage...................................................................................10
Component locations..............................................................................................11
≡5624 Installation....................................................................................................12
Base Address..........................................................................................................13
≡Ports.......................................................................................................................14
Inputs.....................................................................................................................14
Example ..............................................................................................................15
Outputs..................................................................................................................15
Example ..............................................................................................................15
Access LED ............................................................................................................15
≡Technical specifications.........................................................................................17
Inputs.....................................................................................................................17
Outputs..................................................................................................................17
Power requirements...............................................................................................17
Environmental specifications................................................................................17
Warranty .....................................................................................................................18
Limitations on warranty .......................................................................................18
Service policy .........................................................................................................18
Returning a product for repair..............................................................................19
Returns...................................................................................................................19
Governing law........................................................................................................19
7
List of Figures
Figure 1 5624 component diagram.............................................................................11
Figure 2 Edge connector orientation..........................................................................12
Figure 3 Populated Micro PC card cage.....................................................................12
8
List of Tables
Table 1 W1 jumper – base address select..................................................................13
Table 2 Resistor networks..........................................................................................14
Table 3 Resistor network and channel designators ..................................................14
Table 4 Suggested resistor networks.........................................................................15
Table 5 J1 connector – input lines.............................................................................16
Table 6 J2 connector – input/output lines.................................................................16
9
Chapter 1: Overview
≡Description
The 5624 Isolated Digital I/O Card accepts switch closures, PLC and
12V logic inputs and other voltages that can not be used with
standard TTL logic. The card supports 16 input channels and 8
output channels. The inputs have 500V of isolation to ground and
100V between channels. The eight output channels will drive relays,
lamps, small motors, and solenoids. Each channel can switch loads up
to 200 mA and 50V. Signals may be AC or DC. Each output is
isolated from each other and the system. As shipped, the 5624 will
accept signals from 9–58V DC. A plug–in resistor pack allows the
user to accommodate ranges from 3V to 84V.
The 5624 is protected from accidental reverse polarity. Noise filtering
is provided, and the system is not damaged by 200V noise pulses. All
inputs are isolated from each other and the system ground.
The card measures 4.5 x 4.9 inches and operates on +5V. It is
compatible with all Micro PC Control Cards and Microcontrollers and
can be installed in an ISA slot in a desktop PC.
10
Chapter 2: Installation
The 5624 Isolated Digital I/O Card uses one slot of the Micro PC card
cage and can plug directly into any slot in the backplane.
≡Hardware installation
WARNING!
The 5624 card contains static-sensitive CMOS components.
The card is most susceptible to damage when it is plugged
into a backplane. The 5624 card becomes charged by the
user, and the static discharges to the system. To avoid
damaging your card and its components:
Ground yourself before handling the card
Disconnect power before removing or inserting the card.
Using a Micro PC card cage
To install the 5624 card in a Micro PC card cage, you will need the
following equipment (or equivalent):
5624 Isolated Digital I/O Card
Micro PC card cage (5xxx Card Cage)
Power module (510x or 71xx Power Module)
Octagon Micro PC CPU or Microcontroller card
Tabla de contenidos
Manuales populares de Sistema de E/S de otras marcas
WAGO
WAGO 750-344 Manual de usuario
Teknim
Teknim TWM-1887 Manual de instrucciones
Intelligent Appliance
Intelligent Appliance IA-2662-E Manual de usuario
BERGHOF
BERGHOF ECC DIO 16/16 Manual de instrucciones
Advantech
Advantech PCM-27J3AU Manual de instalación y operación
Festo
Festo CP-E08-M12-CL Manual de usuario
