Allen-Bradley ControlLogix 1756-OA8 User manual

Publication 1756-5.16 - September 1999
Installation Instructions
ControlLogix
AC (74-265V) Output Module
(Catalog Number 1756-OA8)
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To: See page:
Prevent Electrostatic Discharge 2
See Removal and Insertion Under Power (RIUP) 2
Understand Compliance to European Union Directive 3
Note the Power Requirements 4
Identify the Module Components 4
Install the Module 5
Key the Removable Terminal Block/Interface Module 6
Wire the Removable Terminal Block 7
Assemble the Removable Terminal Block and the Housing 9
Install the Removable Terminal Block onto the Module 10
Check the Indicators 11
Remove the Removable Terminal Block from the Module 12
Remove the Module 12
See Specifications 13
Understand CSA Hazardous Location Approval 14
Allen-Bradley HMIs

2ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
Prevent Electrostatic Discharge
Removal and Insertion Under Power (RIUP)
ATTENTION
!
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ControlLogix AC (74-265V) Output Module 3
Publication 1756-5.16 - September 1999
Understand Compliance to European Union Directive
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Allen-Bradley HMIs

4ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
Note the Power Requirements
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Identify the Module Components
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Removable Terminal Block and Housing
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20976-M
Side view Front view
1756-OA8 module RTB door label

ControlLogix AC (74-265V) Output Module 5
Publication 1756-5.16 - September 1999
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Install the Module
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20861–M 20862–M
21
Align circuit board with top and
bottom chassis guides. Slide module into chassis until module tabs ‘click’.
Printed
Circuit
Board
Locking tab
Allen-Bradley HMIs

6ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
Key the Removable Terminal Block/Interface Module
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20850–M
U-shaped
Keying Band
20851–M
12
0
34567
Wedge-shaped
Keying Tab
Begin keying in
section #6 or #7.
Module side of RTB

ControlLogix AC (74-265V) Output Module 7
Publication 1756-5.16 - September 1999
Wire the Removable Terminal Block
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For the Spring Clamp RTB
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For the NEMA Screw RTB
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20863–M
Allen-Bradley HMIs

8ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
Wiring example
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12
34
5
6
7
8
910
11
12
1314
1516
1718
19
20
40178-M
NOTES: All terminals with the same name are connected together on the module.
For example, L1 can be connected to any terminal marked L1-0.
When you daisy chain from a group to another RTB, always connect the daisy
chain to the terminal directly connected to the supply wire, as shown above.
This wiring example shows a single voltage source.
Daisy chain to
other RTBs
Group 0Group 0
Group 1Group 1
L2
1756-OA8
L1-0
L1-0
L1-0
L1-0
L1-1
L1-1
L1-1
L1-1
L1-0
L1-1
OUT-0
OUT-1
OUT-2
OUT-3
OUT-4
OUT-5
OUT-6
OUT-7
Not used
Not used
L1

ControlLogix AC (74-265V) Output Module 9
Publication 1756-5.16 - September 1999
Assemble the Removable Terminal Block and the Housing
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20852-M
Groove
Groove
Side edge of the RTB
Side edge of the RTB
Strain relief area
1756-TBNH RTB shown for reference
Allen-Bradley HMIs

10 ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
Install the Removable Terminal Block onto the Module
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20853–M 20854–M
Top
guide
Left-side guides
Bottom guide
Locking
tab
Align the top, bottom and left
side guides of the RTB with
the guides on the module.
Press quickly and evenly to seat
the RTB on the module until the
latches snap into place. Slide
the locking tab down to lock the
RTB onto the module.

ControlLogix AC (74-265V) Output Module 11
Publication 1756-5.16 - September 1999
Check the Indicators
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LED
indicator: This display: Means: Take this action:
OK Steady green light The outputs are actively
being controlled by a system
processor.
None
OK Flashing green light The module has passed
internal diagnostics but is not
actively controlled.
None
OK Flashing red light Previously established
communication has timed
out.
Check controller and chassis
communication.
OK Steady red light The module must be
replaced. Replace the module.
I/O State Yellow The output is active. None
20978-M
ST012 34567 O
K
AC OUTPUT
Allen-Bradley HMIs

12 ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
Remove the Removable Terminal Block from the Module
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Remove the Module
ATTENTION
!
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20855–M
20856–M 20857–M
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ControlLogix AC (74-265V) Output Module 13
Publication 1756-5.16 - September 1999
1756-OA8 Specifications
Number of Outputs 8 (4 points/common)
Module Location 1756 ControlLogix Chassis
Backplane Current 200mA @ 5.1V dc & 2mA @ 24V dc
Maximum Power Dissipation 5.1W @ 60oC
Thermal Dissipation 17.39 BTU/hr
Output Voltage Range 74-265V ac, 47-63Hz
Output Current Rating
Per Point
Per Module 2A maximum @ 60°C (Linear derating) 5A maximum @ 30°C & 4A maximum @ 60°C (Linear derating)
Surge Current per Point 20A for 43ms each, repeatable every 2s @ 60°C
Minimum Load Current 10mA per point
Maximum On-State Voltage Drop 1.5V peak @ 2A & 6V peak @ current<50mA
Maximum Off-State Leakage Current 3mA per point
Commutating Voltage 4V/µs for loads>50mA
0.2V/µs for loads<50mA1
Output Delay Time
Off to on
On to off 9.3ms @ 60Hz; 11ms @ 50Hz 9.3ms @ 60Hz; 11ms @ 50Hz
Scheduled Outputs Synchronization within 65ms maximum, reference to the
Coordinated System Time
Configurable Fault States per Point Hold Last State, ON or OFF (OFF is the default)
Configurable States in Program
Mode per Point Hold Last State, ON or OFF (OFF is the default)
Maximum Inhibit Voltage Zero crossing 60V peak
Fusing Not protected - Fused IFM is recommended to protect outputs
(See publication 1492-2.12)
Isolation Voltage
Group to group
User to system
100% tested at 2546V dc for 1s
(265V ac maximum continuous voltage between groups)
100% tested at 2546V dc for 1s
RTB Screw Torque (NEMA) 7-9 inch-pounds (0.8–1Nm)
Module Keying (Backplane) Software configurable
RTB Keying User defined mechanical keying
Field Wiring Arm and Housing 20 Position RTB (1756-TBNH or TBSH)2
Environmental Conditions
Operating Temperature
Storage Temperature
Relative Humidity
0 to 60°C (32 to 140°F)
-40 to 85°C (-40 to 185°F)
5 to 95% noncondensing
Conductors Wire Size
Category
22-14-gauge (2mm2) stranded 2
3/64 inch (1.2mm) insulation maximum
13, 4
Screwdriver Blade Width for RTB 5/16 inch (8mm) maximum
Allen-Bradley HMIs

14 ControlLogix AC (74-265V) Output Module
Publication 1756-5.16 - September 1999
CSA Hazardous Location Approval
User Manual Publication 1756-6.5.8
Agency Certification
(when product or packaging is marked)
1The commutating dv/dt of the output voltage (OUTPUT to L2) should not exceed 0.2V/µs for loads under 50mA. The
commutating dv/dt rating of the module for loads 50-500mA (OUTPUT TO L2) is 4V/µs maximum. If the commutating
dv/dt rating of the TRIAC is exceeded, the TRIAC could latch on. If the commutating dv/dt rating is exceeded in the
10-50mA range, a resistor may be added across the output and L2. The purpose of this resistor is to increase the total
output current to 50mA (I=V/R). At 50mA and above, the module has a higher commutating dv/dt rating. When adding a
resistor for mthe output toL2, be sure it is rated for the power that it will dissipate (P=(V**2)/R). If the commutating dv/dt
rating is exceeded in the 50-500mA range, the L1 AC waveform could be at fault. Be sure the waveform is a good
sinusoid, void if any anomalies such as distorted or flattened sections.
2Maximum wire size will require extended housing - 1756-TBE.
3Use this conductor category information for planning conductor routing as described in
the system level installation manual.
4Refer to publication 1770-4.1, "Programmable Controller Wiring and Grounding Guidelines”
5CSA certification–Class I, Division 2, Group A, B, C, D or nonhazardous locations.
FM approved–Class I, Division 2, Group A, B, C, D or nonhazardous locations.
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.
Example of the CSA certification product label:
To comply with CSA certification for use in hazardous locations, the following information becomes a part of
the product literature for this CSA-certified industrial constrol 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 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 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.
marked for all applicable directives
Class I Div 2 Hazardous5
Class I Div 2 Hazardous5
marked for all applicable acts
N223
CL I, DIV 2
GP A,B,C,D
TEMP

ControlLogix AC (74-265V) Output Module 15
Publication 1756-5.16 - September 1999
Approbation d’utilisation dans des environnements dangereux par la CSA
Temperature code rating:
The following warnings apply to products having CSA certification for use in hazardous locations.
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 tobe 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.
•If the Product contains batteries, they must only be changed in an area known
to be non-hazardous.
CSA logo is a registered trademark of the Canadian Standards Association.
La CSA certifie des produits pour une utilisation générale aussi bien que pour une utilisation en
environnements dangereux. La certification CSA en vigueur est indiquée par l'étiquette produit et non par des
indications dans la documentation utilisateur.
Exemple d'étiquette de certification d'un produit par la CSA:
Pour satisfaire à la certification CSA 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 1, Division 2,
Groupes A, B, C, D ou non dangereux.
•Les produits portant le marquage CSA approprié (c'est-à-dire Classe 1, 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 CSA 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 1, Division 2. Le code de température est
indiqué sur l'étiquette produit.
CL I, DIV 2
GP A,B,C,D
TEMP
Look for temperature
code rating here.
CL I, DIV 2
GP A,B,C,D
TEMP
Allen-Bradley HMIs

Publication 1756-5.16 - September 1999 PN 957236-45
Supersedes Publication 1756-5.16 - January 1998 © 1999 Rockwell International Corporation. Printed in the U.S.A.
&RGHGHWHPSpUDWXUH
Les avertissements suivants s’appliquent aux produits ayant la certification CSA pour une utilisation en
environnements dangereux.
ATTENTION
!
Risque d’explosion
•La substitution de composants peut rendre cet équipement inadapté à une
utilisation en environnements de Classe 1, 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.
Le sigle CSA est une marque déposée de l’Association des Standards pour le Canada.
CL I, DIV 2
GP A,B,C,D
TEMP
Le code de température
est indiqué ici.