Installation Instruction
POINT I/O 24V dc Expansion Power
Supply
(Cat. No. 1734-EP24DC Series B)
4
5
6
3
2
1
Description
Description
1
1734-EP24DC Power Supply
Module
4
DIN Rail Locking Screw (orange)
2
Interlocking side pieces
5
RTB Removal Handle
3
Module label
6
Removable Terminal Block (RTB)
The 1734-EP24DC expansion power unit passes 24V dc field power
to the I/O modules to the right of it. This unit extends the backplane
bus power for up to 12 I/O modules to the right of the supply, and
creates a new field voltage partition segment for driving field devices.
POINT I/O is a trademark of Rockwell Automation
Publication 1734-IN058A-EN-P - August 2000
2
POINT I/O 24V dc Expansion Power Supply
The expansion power supply also separates field power from I/O
modules to the left of the unit, effectively providing functional and
logical partitioning for:
• separating field power between input and output modules
• separating field power to the analog and digital modules
• grouping modules to perform a specific task or function
Its dark-gray color allows for easy visual inspection and identification.
You can use multiple expansion power units with the POINT I/O
adapters to assemble a full system. For instance, if you are using the
1734-ADN adapter, you may use a 1734-EP24DC expansion power
unit to add additional modules in 12 module increments. For
example, if you had a 36 module system with a 1734 POINT I/O
adapter, you would have two 1734-EP24DC expansion power units to
provide more PointBus current for modules to the right of the supply.
.
ATTENTION
Do not connect 120/240V ac to the 1734-EP24DC
terminals. Damage to the supply will result.
!
ATTENTION
You can only use the 1734-EP24DC expansion
power unit with the 1734 POINT I/O adapters,
such as the 1734-ADN DeviceNet adapter.
!
Publication 1734-IN058A-EN-P - August 2000
POINT I/O 24V dc Expansion Power Supply
3
Installing the 1734-EP24DC Expansion Power Supply
To install the EP24DC on the DIN rail, proceed as follows.
1. Position the EP24DC vertically above the DIN rail.
2. Engage the interlocking side pieces with the unit on the left.
3. Press down firmly to install the EP24DC on the DIN rail.
4. The locking mechanism will lock the EP24DC to the DIN rail.
To remove an EP24DC from the DIN rail
1. To remove the EP24DC from the DIN rail, pull up on the RTB
removal handle (5) to remove the terminal block.
2. Remove the module to the right of the EP24DC from its base
unit.
3. Use a small bladed screwdriver to rotate the DIN rail locking
screw (4) to a vertical position.
4.
This releases the locking mechanism. Then lift straight up to
remove.
If installing a replacement EP24DC to an existing system
1. Remove the module to the right of the EP24DC from its base
unit.
2. Position the EP24DC (1) vertically above the DIN rail.
3. Slide the EP24DC down allowing the interlocking side pieces
to engage the adjacent modules (both left and right sides).
4. Press firmly to seat the EP24DC (1) on the DIN rail. The
EP24DC locking mechanism will snap into place.
5. Reinsert the module into the base next to the EP24DC.
Publication 1734-IN058A-EN-P - August 2000
4
POINT I/O 24V dc Expansion Power Supply
European Communities (EC) Directive Compliance
If this product has the CE mark it is approved for installation within
the European Union and EEA regions. It has been designed and
tested to meet the following directives.
EMC Directive
This product is tested to meet the Council Directive 89/336/EC
Electromagnetic Compatibility (EMC) by applying the following
standards, in whole or in part, documented in a technical
construction file:
• EN 50081-2 EMC — Generic Emission Standard, Part 2 —
Industrial Environment
• EN 50082-2 EMC — Generic Immunity Standard, Part 2 —
Industrial Environment
This product is intended for use in an industrial environment.
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC Low
Voltage, by applying the safety requirements of EN 61131-2
Programmable Controllers, Part 2 - Equipment Requirements and
Tests. For specific information required by EN 61131-2, see the
appropriate sections in this publication, as well as the Allen-Bradley
publication Industrial Automation Wiring and Grounding Guidelines,
publication 1770-4.1.
Open style devices must be provided with environmental and safety
protection by proper mounting in enclosures designed for specific
application conditions. See NEMA Standards publication 250 and IEC
publication 529, as applicable, for explanations of the degrees of
protection provided by different types of enclosures.
Publication 1734-IN058A-EN-P - August 2000
POINT I/O 24V dc Expansion Power Supply
5
Wiring the Expansion Power Supply
1734-EP24DC
System
Power
Field
Power
NC
CHAS
GND
NC
CHAS
GND
C
C
V
V
NC = No Connection
CHAS GND = Chassis Ground
C = Common
V = Supply
41970
Publication 1734-IN058A-EN-P - August 2000
6
POINT I/O 24V dc Expansion Power Supply
12/24v dc Wiring
12/24V dc
0
1
NC
Do not connect 120/240V ac power to
this supply.
NC
2
3
CHAS
GND
CHAS
GND
4
5
C
C
V dc
6
7
V
V
V = 12/24V dc, C = Common
CHAS GND = Chassis ground
This dc supply will be
connected to the internal
power bus.
EP24
Connect
Terminal
Terminals (for
continuing power)
+V dc
6
7
-V dc
4
5
Chas Gnd
2
3
12/24V dc becomes the internal power bus for modules to the right.
ATTENTION
Use the 1734-EP24DC expansion power supply
only with Adapter Class products.
!
Publication 1734-IN058A-EN-P - August 2000
POINT I/O 24V dc Expansion Power Supply
7
Example of continuing power
ADN
EP24DC
I
B
2
Adapter
Status
DeviceNet
Status
I
B
4
O
B
2
E
PointBus
Status
O
B
4
E
I
E
2
C
I
E
2
C
O
E
2
C
1734-EP24DC
1734-ADN
System
Power
DeviceNet
Power
System
Power
DeviceNet
Power
0
12/24V dc only
IMPORTANT
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Example of continued power.
1734adn4
The 1734-EP24DC expansion power supply can
only be used with POINT I/O adapters.
Publication 1734-IN058A-EN-P - August 2000
8
POINT I/O 24V dc Expansion Power Supply
Example of Functional Partitioning
EP24DC
ADN
I
B
2
Adapter
Status
DeviceNet
Status
PointBus
Status
I
B
4
O
B
2
E
O
B
4
E
I
E
2
C
I
E
2
C
O
E
2
C
1734-EP24DC
1734-ADN
System
Power
System
Power
DeviceNet
Power
DeviceNet
Power
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
12/24V dc
Analog
Supply
1734adn4A
12/24V dc
Digital Supply
Example of Logical Partitioning
EP24DC
ADN
Adapter
Status
DeviceNet
Status
PointBus
Status
I
E
2
C
I
B
2
O
E
2
C
O
B
2
E
I
B
2
O
B
4
E
O
B
2
E
1734-EP24DC
1734-ADN
System
Power
System
Power
DeviceNet
Power
DeviceNet
Power
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
12V dc Supply
24V dc Supply
Publication 1734-IN058A-EN-P - August 2000
1734adn4A
POINT I/O 24V dc Expansion Power Supply
9
Safety Approval
C-UL and UL Hazardous Location Approval
Approbation d’utilisation dans des
environnements dangereux par la C-UL/UL
C-UL and UL certifies products for general use as well as for use in
hazardous locations. Actual C-UL and UL certification is
indicated by the product label as shown below, and not by
statements in any user documentation.
La C-UL/UL certifie des produits pour une utilisation générale aussi bien
que pour une utilisation en environnements dangereux. La
certification C-UL/UL en vigueur est indiquée par l'étiquette
produit et non par des indications dans la documentation utilisateur.
Example of the
C-UL and UL
certification
product label:
CL I, DIV 2
GP A,B,C,D
TEMP
LISTED
C
:
Due to the modular nature of a programmable control
system, the product with the highest temperature rating
determines the overall temperature code rating of a
programmable control system in a Class I, Division 2,
location. The temperature code rating is marked on the
product label as shown.
Temperature code rating:
US
CL I, DIV 2
GP A,B,C,D
TEMP
Look for temperature
code rating here.
The following warnings apply to products having C-UL and UL
certification for use in hazardous locations.
US
CL I, DIV 2
GP A,B,C,D
TEMP
Pour satisfaire à la certification C-UL/UL en environnements dangereux,
les informations suivantes font partie intégrante de la documentation
des produits de commande industrielle certifiés.
• Cet équipement ne convient qu’à une utilisation en
environnements de Classe I, Division 2,
Groupes A, B, C, D ou non dangereux.
• Les produits portant le marquage C-UL/UL approprié
(c'est-à-dire Classe I, Division 2, Groupes A, B, C, D) sont
certifiés pour une utilisation avec d'autres équipements, les
combinaisons d’applications et d’utilisations étant déterminées
par la C-UL/UL ou le bureau local d'inspection qualifié.
Important:
De par la nature modulaire des systèmes de commande
programmables, le produit ayant le code de température le
plus élevé détermine le code de température global du
système dans un environnement de Classe I, Division 2. Le
code de température est indiqué sur l'étiquette produit.
Code de température :
LISTED
C
LISTED
C
US
To comply with C-UL and UL certification for use in hazardous
locations, the following information becomes a part of the product
literature for this C-UL and UL-certified industrial control product.
• This equipment is suitable for use in Class I, Division 2,
Groups A, B, C, D, or non-hazardous locations only.
• The products having the appropriate C-UL and UL markings
(that is, Class I, Division 2, Groups A, B, C, D) are certified for
use in other equipment where the suitability of combination
(that is, application or use) is determined by the C-UL and UL
or the local inspection office having jurisdiction
Important:
Exemple d'étiquette de
certification d'un produit
par la C-UL/UL :
LISTED
C
US
CL I, DIV 2
GP A,B,C,D
TEMP
Le code de température
est indiqué ici.
Les avertissements suivants s'appliquent aux produits ayant la certification
C-UL/UL pour une utilisation en environnements dangereux.
WARNING:
Explosion Hazard
• Substitution of components may impair suitability for
Class I, Division 2.
• Do not replace components unless power has been
switched off or the area is known to be non-hazardous.
• Do not disconnect equipment unless power has been
switched off or the area is known to be non-hazardous.
• Do not disconnect connectors unless power has been
switched off or the area is known to be non-hazardous.
Secure any user-supplied connectors that mate to
external circuits on this equipment by using screws,
sliding latches, threaded connectors, or other means
such that any connection can withstand a 15 Newton
(3.4 lb.) separating force applied for a minimum of one
minute.
AVERTISSEMENT : Risque d’explosion
• La substitution de composants peut rendre ce matériel inadapté à
une utilisation en environnements de
Classe I, Division 2.
• Couper le courant ou s'assurer que l’environnement est classé non
dangereux avant de remplacer des composants.
• Couper le courant ou s’assurer que l’environnement est classé non
dangereux avant de débrancher l'équipement.
• Couper le courant ou s'assurer que l’environnement est classé non
dangereux avant de débrancher les connecteurs. Fixer tous les
connecteurs fournis par l'utilisateur pour se brancher aux circuits
externes de cet équipement à l 'aide de vis, loquets coulissants,
connecteurs filetés ou autres, de sorte que les connexions
résistent à une force de séparation de 15 Newtons (1,5 kg - 3,4 lb.)
appliquée pendant au moins une minute.
• S'assurer que l'environnement est classé non dangereux avant de
changer les piles.
C-UL and UL logo is a registered trademark of the Underwriters
Laboratories.
Les sigles C-UL et UL sont des marques déposées de la Underwriters
Laboratories.
Publication 1734-IN058A-EN-P - August 2000
10
POINT I/O 24V dc Expansion Power Supply
Specifications
Specifications - 1734-EP24DC Power Supply Module
I/O Module Capacity
12 modules
Power Supply
Note: In order to comply with CE Low Voltage
Directives (LVD), you must use a Safety Extra Low
Voltage (SELV) or a Protected Extra Low Voltage
(PELV) power supply to power this adapter.
Input Voltage Rating
24V dc nominal
10-28.8V dc range
Field Side Power Requirements 24V dc (+20% = 28.8V dc maximum) @ 400mA
maximum
Inrush Current
6A maximum for 10ms
Indicators
1 Green Field Power Status Indicator
1 Green 5V System Power Indicator
PointBus Output Current
Horizontal mounting 1A at 10-19.2V input;
1.3A at 19.2-28.8V input
Vertical mounting 1A at 10-28.8V input
Input Overvoltage Protection
Reverse polarity protected
Interruption
Output voltage will stay within specifications
when input drops out for 10ms at 10V with
maximum load.
Module Location
Between I/O modules in 1734 system
Breaks field power bus
Limitations
Use with POINT I/O Adapters only
General Specifications
Power Consumption
9.8W maximum @ 28.8V dc
Power Dissipation
3.0W maximum @ 28.8V dc
Thermal Dissipation
10.0 BTU/hr maximum @ 28.8V dc
Isolation Voltage
1250V rms/V ac
Field Power Bus
Supply Voltage
24V dc nominal
Voltage Range
10-28.8V dc range
Dimensions
Inches
3.00H x 1.00W x 5.25L
(Millimeters)
(76.2H x 25.4W x 133.4L)
Specifications continued on next page.
Publication 1734-IN058A-EN-P - August 2000
POINT I/O 24V dc Expansion Power Supply
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock
Operating
Non-operating
Vibration
Conductors Wire Size
-20 to 55°C (-4 to 131°F)
-40 to 85°C (-40 to 185°F)
5 to 95% noncondensing
12g peak acceleration, 11(±1)ms pulse width
50g peak acceleration, 11(±1)ms pulse width
Tested 2g @ 10-500Hz per IEC 68-2-6
Category
Terminal Base Screw Torque
Field Wiring Terminations
Mass
Agency Certification (when
product is marked)
1
11
14AWG (2.5mm2) - 22AWG (0.25mm2) solid or
stranded wire rated at 75°C or greater
3/64 inch (1.2mm) insulation maximum
21
7 pound-inches (0.6Nm)
0 - No Connection
1 - No Connection
2 - Chassis Ground
3 - Chassis Ground
4 - Common
5 - Common
6 - Supply Voltage
7 - Supply Voltage
4.38 oz/12.42 grams
C-UL Listed
C-UL Class I, Division 2, Groups A, B, C and D
certified
UL Listed
CE marked for all applicable directives.
C-Tick marked for all applicable acts.
DeviceNet compatible as certified by ODVA, Inc.
Use this conductor category information for planning conductor routing as described in publication
1770-4.1, “Industrial Automation Wiring and Grounding Guidelines.”
Current Derating for Mounting
1.3
1.0
Current
Horizontal - 1A @ (10-19.2V); 1.3A @ (19.2-28.8)
Vertical - 1A @ (10-28.8V)
0.5
10
19.2
28.8
Voltage
Publication 1734-IN058A-EN-P - August 2000
Publication 1734-IN058A-EN-P - August 2000
PN 957345-84
© 2000 Rockwell International Corporation. Printed in USA