Installation Instructions
(Cat. No. 1794-OB16)
3
4
5
7
1
2
6
Module Installation
This module mounts on a 1794 terminal base unit.
1. Rotate keyswitch (1) on terminal base unit (2) clockwise to position 2 as required for this type of module.
2. Make certain the flexbus connector (3) is pushed all the way to the left to connect with the neighboring terminal base/adapter. You cannot install the module unless the connector is fully extended.
3. Make sure that the pins on the bottom of the module are straight so they will align properly with the connector in the terminal base unit.
4. Position the module (4) with its alignment bar (5) aligned with the groove (6) on the terminal base.
5. Press firmly and evenly to seat the module in the terminal base unit.
The module is seated when the latching mechanism (7) is locked into the module.
!
ATTENTION: To use this module in a complementary
I/O system, refer to your Remote I/O Adapter module documentation.
FLEX I/O is a trademark of Rockwell Automation Publication 1794-5.3 – July 1999
2 24V dc FLEX I/O 16 Source Output Module
!
ATTENTION: Remove field-side power before removing or inserting this module. This module is designed so you can remove and insert it under
backplane power. When you remove or insert a module with field-side power applied, an electrical arc may occur. An electrical arc can cause personal injury or property damage by:
• sending an erroneous signal to your system’s field devices causing unintended machine motion
• causing an explosion in a hazardous environment
Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector.
Worn contacts may create electrical resistance.
European Union 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 Council Directive 89/336/EEC
Electromagnetic Compatibility (EMC) and 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 following Allen-Bradley publications:
•
Industrial Automation Wiring and Grounding Guidelines For Noise
Immunity, publication 1770-4.1
•
Automation Systems Catalog, publication B111
This equipment is classified as open equipment and must be mounted in an enclosure during operation to provide safety protection.
Publication 1794-5.3 – July 1999
24V dc FLEX I/O 16 Source Output Module 3
Wiring to a 1794-TB2, -TB3 or -TB3S Terminal Base Unit
1. Connect individual outpu t wiring to numbered terminals on the 0–15 row (A) as indicated in the table below.
1. Connect the associated output common to the corresponding terminal on the 16–33 row (B) for each output as indicated in the table below.
(Commons are internally connected together.)
2. Connect +24V dc power to terminal 34 on the 34–51 row (C).
3. Connect dc return to terminal 16 on the 16–33 row (B).
4. If continuing power to the next terminal base unit, connect a jumper from terminal 51 (+24V dc) on this base unit to terminal 34 on the next base unit.
5. If continuing common to the next terminal base unit, connect a jumper from terminal 33 (common) on this base unit to terminal 16 on the next base unit.
16
0
0
17
1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2 3 4 5 6 7 8 9 10 11 12 13 14 15
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
0 –15
16–33
34–51
A
B
C
1794-TB3
0 1 2
16 17
3 4 5 6 7 8
18 19 20 21 22 23 24
9 10
25 26
11 12 13 14 15
27 28 29 30 31 32
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
33
51
Label placed at top of wiring area.
Row A
Row B
Row C
Row A
Row B
Row C
1794-TB3S
ATTENTION: Total current draw through the terminal base unit is limited to 10A. Separate power connections to the terminal base unit may be necessary.
Publication 1794-5.3 – July 1999
4 24V dc FLEX I/O 16 Source Output Module
Output
Output 0
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
Output 7
Common
Indicators
Output
Terminal
Common
Terminal
A–4
A–5
A–6
A–7
A–0
A–1
A–2
A–3
B–16 thru B–33
B–17
B–18
B–19
B–20
B–21
B–22
B–23
B–24
Output
Output 8
Output 9
Output 10
Output 11
Output 12
Output 13
Output 14
Output 15
+24v dc
Output
Terminal
Common
Terminal
A–8
A–9
A–10
A–11
A–12
A–13
A–14
A–15
C–34 thru C–51
B–25
B–26
B–27
B–28
B–29
B–30
B–31
B–32
Allen-Bradley
24 VDC SOURCE OUTPUT
1794–OB16
2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
A B
A = Status Indicators – show status of individual outputs.
B = Insertable label for writing individual output designations.
Memory Mapping
Bit
⇒
Word
⇓ 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Read
Write
Where: O = Output value
Not used
O15 O14 O13 O12 O11 O10 O9 O8 O7 O6 O5 O4 O3 O2 O1 O0
Publication 1794-5.3 – July 1999
24V dc FLEX I/O 16 Source Output Module 5
Specifications – 24V dc Output Module Cat. No. 1794-OB16
Number of Outputs
Module Location
ON-state Voltage Range
16 (1 group of 16), non-isolated, sourcing
Cat. No. 1794-TB3, -TB3S Terminal Base Unit
10V dc minimum
24V dc nominal;
31.2V dc maximum
8A (16 outputs @ 0.5A) Output Current Rating
OFF-state Voltage
ON-state Current
Surge Current
31.2V dc maximum
1.0mA minimum per channel
500mA maximum per channel
2A for 50ms, repeatable every 2 seconds
OFF-state Leakage
ON-state Voltage Drop
0.5mA maximum
0.5V dc maximum
Isolation Voltage (minimum) 100% tested at 850V dc for 1s between user and system
No isolation between individual channels
Output Signal Delay
Off to On
On to Off
0.5ms maximum
1.0ms maximum
Flexbus Current (maximum) 80mA
Power Dissipation 5.3W maximum @ 31.2V
18.1 BTU/hr @ 31.2V dc Thermal Dissipation
Indicators (field side indication, logic driven)
Fuse recommendations 1
16 yellow status indicators
Fusing of outputs is recommended.
Use SAN–O MQ4–800mA fuses
Keyswitch Position 2
Specifications continued on next page.
Publication 1794-5.3 – July 1999
6 24V dc FLEX I/O 16 Source Output Module
Specifications – 24V dc Output Module Cat. No. 1794-OB16
General Specifications
External dc Power
Supply Voltage
Voltage Range
Supply Current
24V dc nominal
19.2 to 31.2V dc (includes 5% ac ripple)
49mA @ 24V dc (38 to 65mA)
Dimensions Inches
(Millimeters)
1.8H x 3.7W x 2.1D
(45.7 x 94.0 x 53.3)
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock
Vibration
Operating
Non-operating
Category
0 to 55 o C (32 to 131 o F)
–40 to 85 o C (–40 to 185 o F)
5 to 95% noncondensing
30 g peak acceleration, 11(+1)ms pulse width
50 g peak acceleration, 11(+1)ms pulse width
Tested 5 g @ 10–500Hz per IEC 68-2-6
12 gauge (4mm
2
) stranded maximum
3/64 inch (1.2mm) insulation maximum
2 1
Agency Certification
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CSA certified
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CSA Class I, Division 2
Groups A, B, C, D certified
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UL listed
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CE marked for all applicable directives
1 You use this conductor category information for planning conductor routing. Refer to publication
1770-4.1, “Industrial Automation Wiring and Grounding Guidellines for Noise Immunity.”
Publication 1794-5.3 – July 1999
24V dc FLEX I/O 16 Source Output Module 7
CSA Hazardous Location Approval Approbation d’utilisation dans des emplacements dangereux par la CSA
CSA
certifies products for general use as well as for use in hazardous locations. Actual CSA certification is indicated by the product label as shown below, and not by statements in any user documentation.
La CSA
certifie les produits d’utilisation générale aussi bien que ceux qui s’utilisent dans des emplacements dangereux. La certification CSA en
vigueur est indiquée par l’étiquette du produit et non par des affirmations dans la documentation à l’usage des utilisateurs.
Example of the CSA certification product label
I
Exemple d’étiquette de certfication d’un produit par la CSA
I
To comply with CSA certification for use in hazardous locations, the following information becomes a part of the product literature for
CSA-certified Allen-Bradley industrial control products.
•
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 CSA 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 CSA or the local inspection office having jurisdiction.
Important: Due to the modular nature of a PLC
control system, the product with the highest temperature rating determines the overall temperature code rating of a PLC control system in a Class I, Division 2 location. The temperature code rating is marked on the product label as shown.
Pour satisfaire à la certification de la CSA dans des endroits dangereux, les informations suivantes font partie intégrante de la documentation des produits industriels de contrôle Allen-Bradley certifiés par la
CSA.
•
Cet équipement convient à l’utilisation dans des emplacements de Classe I, Division 2, Groupes A,
B, C, D, ou ne convient qu’à l’utilisation dans des endroits non dangereux.
•
Les produits portant le marquage approprié de la
CSA (c’est à dire, Classe I, Division 2, Groupes A,
B, C, D) sont certifiés à l’utilisation pour d’autres
équipements où la convenance de combinaison
(application ou utilisation) est déterminée par la
CSA ou le bureau local d’inspection qualifié.
Important: Par suite de la nature modulaire du système de contrôle PLC
, le produit ayant le taux le plus élevé de température détermine le taux d’ensemble du code de température du système de contrôle d’un PLC dans un emplacement de Classe I,
Division 2. Le taux du code de température est indiqué sur l’étiquette du produit.
Temperature code rating
I
Taux du code de température
I
Look for temperature code rating here
The following warnings apply to products having
CSA certification for use in hazardous locations.
Le taux du code de température est indiqué ici
Les avertissements suivants s’appliquent aux produits ayant la certification CSA pour leur utilisation dans des emplacements dangereux.
Publication 1794-5.3 – July 1999
8 24V dc FLEX I/O 16 Source Output Module
CSA Hazardous Location Approval Approbation d’utilisation dans des emplacements dangereux par la CSA
!
ATTENTION: 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 an
Allen-Bradley product 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 inacceptable pour lesemplacements de Classe I, Division
2.
•
Couper le courant ou s’assurer quel’emplacement est désigné non dangereux avant de remplacer lescomposants.
•
Avant de débrancher l’équipement, couper le courant ou s’assurer que l’emplacement est désigné non dangereux.
•
Avant de débrancher les connecteurs, couper le courant ou s’assurer que l’emplacement est reconnu non dangereux. Attacher tous connecteurs fournis par l’utilisateur et reliés aux circuits externes d’un appareil
Allen-Bradley à l ’aide de vis, loquets coulissants, connecteurs filetés ou autres moyens permettant aux connexions de résister à une force de séparation de 15 newtons (3,4 lb. - 1,5 kg) appliquée pendant au moins une minute.
Le sigle CSA est la marque déposée de l’Association des Standards pour le Canada.
PLC est une marque déposée de Allen-Bradley Company, Inc.
CSA logo is a registered trademark of the Canadian Standards Association
PLC is a registered trademark of Allen-Bradley Company, Inc.
With major offices worldwide.
World Headquarters,
Allen-Bradley,
1201 South Second Street,
Milwaukee, WI 53204 USA,
Tel: (1) 414 382-2000 Fax: (1) 414 382-4444
Supersedes publication 1794-5.3 – December 1996
PN955123–77A
Copyright 1999 Allen-Bradley Company, Inc. Printed in USA
