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Specifications

AC (120V) Isolated Output Module

(Cat. No. 1771-OD)

Installation Data

 8

Outputs per Module

6

Module Location

1771 I/O Chassis

Voltage Rating

92 to 138V ac @ 47-63 Hz

Output Current Rating (per channel)

2A per output (not to exceed 6A per module)

Surge Current

20A maximum for 100msec

Repeatable every 5 seconds

Minimum Load Current

60mA per output

On-state Voltage Drop

2V ac (max) at 100mA

Off-state Leakage Current

5mA (max) per output at 138V ac

Power Rating

4Watts per output

Power Dissipation

13.2 Watts (max);  1.2 Watts (min)

Thermal Dissipation

45.2 BTU/hr (max); 4.1 BTU/hr (min)

Backplane Current

225mA

Maximum Cable Length

1000 ft (304.8 m)

Isolation Voltage

1000V channel-to-channel

1500V to backplane

Environmental Conditions

Operational Temperature

Storage Temperature

Relative Humidity

0

o

 to 60

o

C (32

o

 to 140

o

F)

-40

o

 to 85

o

C (-40

o

 to 185

o

F)

5 to 95% (without condensation)

Conductors

Wire Size

Category

14 gage stranded maximum

3/64 inch insulation maximum

1

1

Keying

Between 4 and 6

Between 30 and 32

Fuse

5A, 3AG normal blow fuses (1 per output)

Field Wiring Arm

Catalog Number 1771-WD

Wiring Arm Screw Torque

79 inchpounds

1

 

Refer to publication 1770-4.1, Programmable Controller Wiring and Grounding Guidelines

With offices in major cities worldwide

WORLD
HEADQUARTERS
Allen-Bradley
1201 South Second Street
Milwaukee, WI 53204 USA
Tel: (1) 414 382-2000
Telex: 43 11 016
FAX: (1) 414 382-4444

EUROPE/MIDDLE
EAST/AFRICA
HEADQUARTERS
Allen-Bradley Europe B.V.
Amsterdamseweg 15
1422 AC Uithoorn
The Netherlands
Tel: (31) 2975/43500
Telex: (844) 18042
FAX: (31) 2975/60222

ASIA/PACIFIC
HEADQUARTERS
Allen-Bradley (Hong Kong)
Limited
Room 1006, Block B, Sea
View Estate
28 Watson Road
Hong Kong
Tel: (852) 887-4788
Telex: (780) 64347
FAX: (852) 510-9436

CANADA
HEADQUARTERS
Allen-Bradley Canada
Limited
135 Dundas Street
Cambridge, Ontario N1R
5X1
Canada
Tel: (1) 519 623-1810
FAX: (1) 519 623-8930

LATIN AMERICA
HEADQUARTERS
Allen-Bradley
1201 South Second Street
Milwaukee, WI 53204 USA
Tel: (1) 414 382-2000
Telex: 43 11 016
FAX: (1) 414 382-2400

As a subsidiary of Rockwell International, one of the world’s largest technology
companies — Allen-Bradley meets today’s challenges of industrial automation with over
85 years of practical plant-floor experience. More than 11,000 employees throughout the
world design, manufacture and apply a wide range of control and automation products
and supporting services to help our customers continuously improve quality, productivity
and time to market. These products and  services not only control individual machines but
integrate the manufacturing process, while providing access to vital plant floor data that
can be used to support decision-making throughout the enterprise.

Publication 1771–2.12 – April 1992

Supersedes publication 1771–2.12 – April 1990

P/N 955111–51

Copyright 1992 Allen–Bradley Co. Inc. Printed in USA

Summary of Contents for 1771-OD

Page 1: ...2A per channel not to exceed 6A total per module The switching device in the output circuit is a triac There is a small leakage current in the off state due to both triac and capacitive characteristics The maximum leakage current per output is 5mA at 138V ac Nominal leakage current is 1mA The on state voltage drop across the output terminals is no more than 2 0V ac at 100mA The triac needs a minim...

Page 2: ...ecommended for every possible load See Table A for acceptable suppression devices for typical loads Table A Allen Bradley Suppressors Allen Bradley Equipment Suppressor Catalog Number Motor Starter Bulletin 509 599 K041 Motor Starter Bulletin 709 1401 N101 Relay Bulletin 700 Type N or P 700 N5 700N92 Miscellaneous 700 N243 1 For starters with 120V ac coils 2 Maximum coil voltage 150V ac or dc 3 Bu...

Page 3: ...g the module Do not touch the backplane connector or connector pins When you configure or replace internal components do not touch other circuit components inside the module If available use a static safe work station When not in use keep the module in its static shield bag In this section we tell you how to key your I O chassis install your module and make your wiring connections Module Location ...

Page 4: ...sition the module so that the circuit board on the rear of the module lines up with the top and bottom card guides in the chassis 2 Slide the module into the chassis 3 Press firmly to seat the module in the chassis backplane connector 4 Swing the module locking latch down into place over the front of the module Connecting Wiring to the module You make connections to the module through the 1771 WD ...

Page 5: ...A Output 1B Output 2A Output 2B Output 3A Output 3B Output 4A Output 4B Output 5A Output 5B 10593 I You can use an output of the 1771 OD module to drive an input of a 120V ac input module 1771 IA IA2 ID IAD to indicate status of turning on a motor starter for example Figure 2 However you must add a 2 5K ohm 10W resistor or an Electrocube snubber pt no RG 1676 1 between the output and L2 common Inp...

Page 6: ...Isolated Output Module Cat No 1771 OD 120V ac Supply L1 L2 120V ac Supply 120V AC Input Module Cat No 1771 IA IA2 2K ohm 20 Watt Resistor 10594 I 2 5K ohm 10 Watt Resistor The module has 12 status indicators Figure 3 The top 6 indicators show the state of each output and are driven by the logic circuitry on the programmable controller side of the module These indicators light when their correspond...

Page 7: ... O module Failure to remove power from the backplane could cause injury or equipment damage due to possible unexpected operation Failure to remove power from the backplane or wiring arm could cause module damage degradation of performance or injury If a blown fuse occurs 1 Turn off power to the I O chassis backplane 2 Pivot the wiring arm away from the module and pull the module from the I O chass...

Page 8: ...t Milwaukee WI 53204 USA Tel 1 414 382 2000 Telex 43 11 016 FAX 1 414 382 4444 EUROPE MIDDLE EAST AFRICA HEADQUARTERS Allen Bradley Europe B V Amsterdamseweg 15 1422 AC Uithoorn The Netherlands Tel 31 2975 43500 Telex 844 18042 FAX 31 2975 60222 ASIA PACIFIC HEADQUARTERS Allen Bradley Hong Kong Limited Room 1006 Block B Sea View Estate 28 Watson Road Hong Kong Tel 852 887 4788 Telex 780 64347 FAX ...

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