Rockwell Automation 1794-IM8,1794-OM8 FLEX I/O 220V ac Input and Output Modules Inst. Inst. User Manual

Page 4

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Publication 1794-IN104A-EN-P - March 2004

4

PN 957824-75

Supersedes Publication 1794-5.57 - Feb 1999, and 1794-5.58 - Feb 1999

Copyright © 2004 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.

1794-IM8 Derating Curve

1794-OM8 Derating Curve

Conductors

Wire Size

Category

4

12 to 22AWG (4 to 0.25mm

2

) stranded copper wire rated at 60°C or

higher
3/64 inch (1.2mm) insulation maximum
2

Certifications (when
product is marked)

5

UL

UL Listed Industrial Control Equipment

CSA CSA certified for Class I, Division 2, Groups A, B, C and D

Hazardous locations

CE

5

European Union 89/336/EEC EMC Directive,

compliant with:

EN 61000-6-4; Industrial Emissions

EN 50082-2; Industrial Immunity

EN 61326; Meas./Control/Lab., Industrial Requirements

EN 61000-6-2; Industrial Immunity

European Union 73/23/EEC LVD Directive, compliant with:

EN 61131-2; Programmable Controllers

C-Tick

5

- Australian Radiocommunications Act compliant with

AS/NZS CISPR 11, Industrial Emissions

1

Input off-to-on filter time is the time from a valid input signal to recognition by the module. Input on-to-off filter

time is time from the input signal dropping below the valid level to recognition by the module.

2

Delay time is the time from the mreceipt of an output on or off command to the output actually turning on or off.

3

Module outputs are not fused. We recommend that outputs be fused. If not using the 1794-TBNF, and fusing is

desired, it must be provided externally.

4

You use this category information for planning conductor routing as described in Allen-Bradley
publication 1770-4.1, Industrial Automation Wiring and Grounding Guidelines.

5

For the latest up-to-date information, see the Product Certification link at www.ab.com for Declarations of

Conformity, Certificates and other certification details. For notification of any additional release notes, refer to

www.ab.com/manuals/.

0

150

10

20

30

40

50

55

60

V

in

On–state

Voltage

(V ac)

Ambient Temperature

o

C

The area within the curve represents the safe operating range for the module under various
conditions of user supplied 220V ac supply voltages and ambient temperatures.

= All mounting positions (including normal horizontal, vertical,
inverted horizontal) safe operating range

175

190

205

220

250

264

46

235

Voltage (maximum)

Temperature (maximum)

264

46

250

55

0

150

10

20

30

40

50

55

60

V

in

O n–state

Voltage

(V ac)

Ambient Temperature

o

C

The area within the curve represents the safe operating range for the module
under various conditions of user supplied 220V ac supply voltages and ambient
temperatures.

= Other mounting positions (including inverted horizontal, vertical)
safe operating range

175

190

205

220

235

250

264

49

= Normal mounting safe operating range. Includes

Mounting

Temperature (maximum)

normal horizontal

55

Other mounting positions
(including inverted horizontal, vertical)

49

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