The product discussed in this literature is subject to terms and conditions outlined in Eaton Electrical Inc. selling policies. The sole
source governing the rights and remedies of any purchaser of this equipment is the relevant Eaton Electrical Inc. selling policy.
NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR
MERCHANTABILITY, OR WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE, ARE MADE REGARDING THE
INFORMATION, RECOMMENDATIONS AND DESCRIPTIONS CONTAINED HEREIN. In no event will Eaton Electrical Inc. be responsible
to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or
consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system,
cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its
customers resulting from the use of the information, recommendations and descriptions contained herein.
The information contained in this manual is subject to change without notice.
Servicing and operating this I/O system, like all industrial control components and systems, involves significant hazards. The most
obvious hazard is that of electrical shock. These hazards are not limited to electrical shock. They also involve hazards related to
managing energy that is converted from electricity into mechanical energy as motors, solenoids controlled valves and other
equipment perform work. Every effort is made to provide the safest equipment possible. Every effort is made to provide the safest
operating and servicing procedures possible. It is, however, the user’s responsibility to ensure that the design and application are safe
and appropriate.
Throughout this document are found various safety warnings. Observe these messages carefully. Each is described as follows:
Definitions and Symbols
WARNINGAVERTISSEMENTADVERTENCIA
This symbol indicates high voltage. It calls
your attention to items or operations that
could be dangerous to you and other
persons operating this equipment. Read the
message and follow the instructions
carefully.
CAUTIONPRÉCAUTIONPRECAUCIÓN
Indicates a potentially hazardous situation
which, if not avoided, can result in minor to
moderate injury, or serious damage to the
product. The situation described in the
CAUTION may, if not avoided, lead to
serious results. Important safety measures
are described in CAUTION (as well as
WARNING).
Ce symbole indique la haute tension. Il sert à
attirer votre attention aux articles et
opérations qui pourraient vous être
dangereux, ainsi qu’à tout autre personne
utilisant cet équipement. Lisez ce message
et suivez prudemment les instructions.
.
Indique une situation potentiellement
dangereuse qui, si elle n’est pas évitée, peut
entraîner des blessures mineures à
modérées ou de graves dégâts au produit.
La situation décrite dans l’article intitulé
PRÉCAUTION peut, si elle n’est pas évitée,
mener à de sérieux résultats. Les mesures
de sécurité importantes sont décrites dans
les articles intitulés PRÉCAUTION (aussi
bien que AVERTISSEMENT).
Este símbolo indica alto voltaje. Le llama su
atención en cuanto a artículos u operaciones
que pueden ser peligrosas para usted y
otras personas que operan este equipo. Lea
el mensaje y siga cuidadosamente las
instrucciones.
Indica que existe una situación
potencialmente peligrosa, que si no es
evitada, podrá resultar en heridas
corporales menores o moderadas, o en
serios daños al producto. La situación
descrita en la PRECAUCIÓN podrá causar
serios resultados si no es evitada. Medidas
importantes de seguridad son descritas en la
PRECAUCIÓN (como también en la
ADVERTENCIA).
Hazardous High Voltage
WARNINGAVERTISSEMENTADVERTENCIA
Some control equipment and electronic
controllers are connected to hazardous line
voltages. When servicing the I/O system,
related starters and other electronic
controllers, there may be exposure to
components with housings or protrusions at
or above line potential. Extreme care should
be taken to protect against shock. Stand on
an insulating pad and make it a habit to use
only one hand when checking components.
Always work with another person in case an
emergency occurs. Disconnect power before
checking controllers or performing
maintenance. Be sure equipment is properly
grounded. Wear safety glasses whenever
working on electronic components or
industrial machinery.
Des commandes électroniques et
équipement de commande sont connectés à
des lignes de tension dangereuse. Lors de
l’entretien du système I/O, des démarreurs
et des commandes électroniques connexes,
vous pourrez être exposé à des composants
dont le boîtier et les protubérances
conduisent la tension de la ligne, voire
même supérieure. Vous devriez faire
extrêmement attention à vous protéger
contre les électrochocs. Tenez-vous sur un
tapis isolant et habituez-vous à n’utiliser
qu’une main quand vous contrôlez des
composants. Travaillez toujours en
compagnie d’une autre personne en cas
d’urgence. Coupez le courant avant de
vérifier les commandes ou de réaliser
l’entretien. Assurez-vous que l’équipement
est correctement mis à la terre. Portez des
lunettes de sécurité quand vous travaillez
sur des composants électroniques ou la
machinerie industrielle.
Algunos equipos de control y controladores
electrónicos están conectados a tensiones
de línea peligrosas. Al darle servicio al
sistema de I/O, arranques relacionados y
otros controladores electrónicos, pueda que
hayan componentes expuestos con carcasas
o protuberancias en el potencial de línea o
más altos. Se deberá tener extremo cuidado
para protegerse contra electrochoque.
Párese sobre un tapete aislante y habitúese
a usar sólo una mano al comprobar
componentes. Siempre trabaje con otra
persona en caso que ocurra una
emergencia. Desconecte la energía antes de
comprobar controladores o efectuar
mantenimiento. Asegúrese de que el equipo
esté conectado apropiadamente a tierra. Use
gafas de seguridad cuando trabaje en
componentes electrónicos o en maquinas
industriales.
MN05002001EFor more information visit: www.EatonElectrical.comv
Make sure you read and understand the
installation procedures in this manual
before you attempt to operate or set up the
equipment.
WARNINGAVERTISSEMENTADVERTENCIA
This instruction manual should be used for
proper installation, setup and operation of
the IT. D77A I/O modules. Improperly
installing and maintaining this product can
result in serious personal injury or property
damage. Before attempting installation,
setup or operation, read and understand this
entire manual.
WARNINGAVERTISSEMENTADVERTENCIA
Hazardous voltage can cause electric shock
and burns. Always disconnect power before
proceeding with any work on this product.
Assurez-vous de lire et comprendre les
procédures d’installation comprises dans ce
manuel avant d’essayer d’utiliser ou
d’installer l’équipement.
Ce mode d’emploi devrait être utilisé pour
installer ou opérer correctement les
modules IT. D77A I/O. Mal installer et
maintenir ce produit peut entraîner de
graves blessures corporelles ou de grands
dégâts matériels. Avant d’essayer de
l’installer ou de l’utiliser, lisez et comprenez
ce manuel dans son intégralité.
La tension dangereuse peut causer des
électrochocs et des brûlures. Coupez
toujours le courant avant d’entreprendre
tout travail sur ce produit.
Asegúrese de leer y comprender los
procedimientos de instalación dados en este
manual antes de intentar operar o
configurar el equipo.
Este manual de instrucciones deberá ser
usado para instalar, configurar y operar
apropiadamente el IT. Módulos I/O D77A El
instalar y mantener impropiamente este
producto podrá resultar en serias heridas
corporales o en daños a la propiedad. Antes
de comenzar la instalación, configuración o
la operación, lea y comprenda el manual
completo.
Los voltajes peligrosos pueden causar
electrochoque y quemaduras. Siempre
desconecte la energía antes de proceder con
cualquier trabajo en este producto.
WARNINGAVERTISSEMENTADVERTENCIA
Only apply 24V DC to the I/O module power
terminals. Use of any other voltage may
result in personal injury, property damage
and damage to the IT. D77A I/O module.
WARNINGAVERTISSEMENTADVERTENCIA
To provide continued protection against fire
or shock hazard, the complete IT
modules must be replaced if they become
inoperative.
. D77A I/O
N’appliquez que du courant continu de 24 V
aux bornes de courant des modules I/O.
L’emploi de toute autre tension peut
entraîner des blessures corporelles, des
dégâts matériels et des dégâts au module
IT. D77A I/O.
Pour fournir une protection continue contre
le risque d’incendie ou d’électrochoc, les
modules IT. D77A I/O complets doivent être
remplacés s’ils deviennent inopérables.
Sólo aplique 24V CD a los terminales de
energía del módulo I/O. El uso de cualquier
otro voltaje podrá resultar en heridas
corporales, daños a la propiedad o daños al
IT. Módulo I/O D77A.
Con el fin de suministrar protección
continua contra peligro de fuego o
electrochoque, los módulos I/O D77A
completos del IT. tendrán que ser
reemplazados si se tornan inoperantes.
viFor more information visit: www.EatonElectrical.comMN05002001E
Cutler-Hammer® Intelligent Technologies (IT.) D77A I/O Modules from Eaton Corporation® are part of the IT. family of products that
are best by design. These modules are designed and built for industrial applications with standard features including removable
locking terminal blocks and connectivity to IT. motor control. The size and features are a substantive engineering and marketing effort,
involving extensive customer input. For more information on the IT. family of products, visit our website:
www.EatonElectrical.com
IT. D77A I/O discrete modules are available in 8 and 16 point densities, and in AC or DC voltage configurations. Input modules have
two points per isolated common. Output modules are available in relay and solid-state configurations with two points per isolated
common.
The IT. D77A I/O analog modules are available in variable voltage and current loop modules. Input modules support four analog
channels and output modules support two analog channels.
D77A I/O products are designed for industrial applications, installed in a manner consistent with the guidelines outlined in this
document. They are designed for Pollution Degree 2 environments (clean and dry).
Component Characteristics
This section identifies special features engineered into the Cutler-Hammer IT. D77A I/O modules.
All Modules
The IT. D77A I/O modules have the following common features:
• LED Status — When the LED is illuminated the proper ON state signal is received at the input or at the output point.
• Removable Lockable Terminals — Terminals are easily removable for I/O module replacement and are lockable so they will not
vibrate loose. Terminals are available in screw type, cage clamp and insulation displacement.
• Terminal Identification — Each terminal is marked for ease of wiring and troubleshooting.
• Isolation — Each module is optically isolated between the field I/O and the backplane communication.
• Securing Tabs — Each I/O module has a locking mechanism to secure it to the DIN rail.
• Barrier Type Terminals — Each terminal has a barrier to minimize shorting of field wiring.
Discrete Input Modules
The IT. D77A Input modules have the following common feature:
• Adjustable Debounce — Each point has adjustable debounce from 1 to 65 ms.
• Sink/source — Each DC input module has back-to-back LEDs in the optical isolating circuit that can accept sinking or sourcing
signals.
Discrete Output Modules
The IT. D77A I/O Output modules have the following common features:
• Configurable Safe State — Each output point has a loss of communication safe state setting.
• Configurable Power ON State — Each output point has a power-up setting.
MN05002001E
For more information visit: www.EatonElectrical.com1
Catalog numbers have three or five groups of characters, depending on the kind of module the catalog number represents. The
catalog numbering system used for IT. D77A I/O modules is illustrated as follows:
For discrete digital and analog I/O, the first four positions in the first group indicate the product family. The next two places in the
second group indicate the I/O type. The third group uses one or two places to indicate the number of points in the module. The last
group is used only for combination modules.
Table 2: Catalog Numbering System
Q
AD77A
-
16 XX
Product Line Prefix
D77A = I/O Module Products
A = AC
D = DC
R = Relay
N = Analog
I/O Type
Input or Output
I = Input
Q = Output
Expansion Module
DQ8 (DC Output, 8 Points)
RQ8 (Relay Output, 8 Points)
AQ8 (AC Output, 8 Points)
Number of Points
2 = 2 Points
4 = 4 Points
8 = 8 Points
16 = 16 Points
MN05002001E
For more information visit: www.EatonElectrical.com3
Note: Ventilation requirements necessitate a minimum of 50 mm (2 in) on the top and bottom of each module and to each side of a
module grouping.
Power Requirements
The current draw for the IT. D77A I/O modules can be found in the module specification table for each specific module type. When
specifying the 24 volt DC power supply, the power rating must support the sum of all the modules’ current draw added to the system
power requirements.
For more information on the sizing of power supplies, refer to the IT. QCPort System Install and Planning Guide (Publication No.
MN05001002E).
Surge Suppression
IT. D77A Discrete I/O output modules have built-in surge suppression (snubbers) to reduce the effects of transient voltages. When
connecting output devices that have inductive loads (e.g., solenoids, relays, motor starters, etc.) additional surge suppression is
recommended and should be added across the load. The addition of customer-supplied surge suppression for inductive loads
prolongs the D77A output life.
MN05002001E
For more information visit: www.EatonElectrical.com5
Nominal Input Voltage120V AC, 50/60 Hz120V AC, 50/60 Hz
Operating Voltage80 – 140V AC, 50/60 Hz80 – 140V AC, 50/60 Hz
Number of Inputs816
Points per Common22
OFF State Voltage0 – 30V AC *0 – 30V AC *
ON State Voltage80V AC – 140V AC80V AC – 140V AC
Nominal Input Current15 mA15 mA
Signal Delay8.33 ms @ 60 Hz / 10 ms @ 50 Hz8.33 ms @ 60 Hz / 10 ms @ 50 Hz
QCPort Current Draw33 mA46 mA
Isolation1.5kV1.5kV
Terminal Screw Torque4.5 inch-pounds
(0.51 Newton-meters)
* A 50V transition range exists between 30V and 80V.
4.5 inch-pounds
(0.51 Newton-meters)
VAC
VAC
VAC
VAC
a
Ø
1
CØ
2
3
C1
4
5
C2
6
7
C3
Ø
1
CØ
VACVAC
2
3
VACVAC
C1
4
5
C2
VACVAC
6
7
C3
VAC
VAC
b
8
9
C4
COM
10
11
C5
12
13
C6
14
15
C7
IN
IN
c
D77A-006
Figure 3: AC Input Module Diagrams
a) D77A-AI8, Eight-Point Module
b) D77A-AI16, Sixteen-Point Module
c) Internal Circuit
8For more information visit: www.EatonElectrical.com
TypeSink/SourceSink/Source
Nominal Input Voltage24V DC24V DC
Operating Voltage18 – 30V DC18 – 30V DC
Number of Inputs816
Points per Common22
Signal Delay5 ms 5 ms
OFF State Voltage0 – 6V DC *0 – 6V DC *
ON State Voltage18V – 30V DC18V – 30V DC
Nominal Input Current5 mA5 mA
QCPort Current Draw35 mA63 mA
Isolation1.5kV1.5kV
Terminal Screw Torque4.5 inch-pounds
(0.51 Newton-meters)
* A 12V transition range exists between 6V and 18V.
4.5 inch-pounds
(0.51 Newton-meters)
VDC
VDC
VDC
VDC
a
VDC
VDC
VDC
VDC
Ø
1
CØ
2
3
C1
4
5
C2
6
7
C3
Ø
1
CØ
2
3
C1
4
5
C2
6
7
C3
VDC
VDC
VDC
VDC
C4
10
11
C5
12
13
C6
14
15
C7
8
9
IN
IN
COM
c
D77A-008
b
Figure 4: DC Input Module Diagrams
a) D77A-DI8, Eight-point Module
b) D77A-DI16, Sixteen-point Module
c) Internal Circuit
MN05002001E
For more information visit: www.EatonElectrical.com9
Table 15: D77A-NI4 Analog Input Module Specifications
D77A-NI4
Catalog Number
Voltage Input0 – 5V, 1 – 5V, 0 – 10V DC—
Current Input—4 – 20 mA, 0 – 20 mA
Input TypeSingle End, Uni-polar
Resolution
Note: Input filter settings affect the
effective resolution of the channels.
Input Full Scale Range0 – 10.5V or 0 – 5.25V0 – 21 mA
Maximum Overload at Input Terminal30VDC32 mA
Number of Channels4
Selectable Input Filter Frequency50Hz, 60Hz, 250Hz, 500Hz
Input Group-to-Bus Isolation500 VAC for 60 seconds
Common Mode RejectionGreater than 60 db @ 50/60 Hz
Normal Mode Rejection ratio-50 db @ 50/60 Hz
Accuracy+/– 0.3% Full Scale @ 25°C
Input Impedance15M ohm250 ohm
Operating Temperature0–55°C
Status LED IndicationModule Status
QCPort Current Draw60 mA
Terminal Screw Torque4.5 inch-pounds (0.51 Newton-meters)
50Hz0-5VDC14 bit0-20mA14 bit
60Hz0-5VDC14 bit0-20mA14 bit
250Hz0-5VDC14 bit0-20mA12 bit
500Hz0-5VDC9 bit0-20mA9 bit
Voltage InputCurrent Loop Input
VoltageResolutionCurrentResolution
0-10VDC14 bit4-20mA14 bit
1-5VDC14 bit
0-10VDC14 bit4-20mA14 bit
1-5VDC14 bit
0-10VDC13 bit4-20mA12 bit
1-5VDC12 bit
0-10VDC10 bit4-20mA9 bit
1-5VDC9 bit
+/– 0.4% Full Scale @ 0-55°C
+/– 0.45% Full Scale @ 25°C
+/– 0.5% Full Scale @ 0-55°C
(See Figure 5 for circuit diagram)
10For more information visit: www.EatonElectrical.com