Rockwell-automation 1794-IF2XOF2IXT FLEX XT I/O Isolated Input Analog Instrukcja Użytkownika Pobierz pdf (Strona 5)

Publication 1794-IN129B-EN-P - April 2009

General (Output)

Attribute Value

Number of outputs 4 isolated (1794-OF4IXT)

2 isolated (1794-IF2XOF2XT)

Resolution

Voltage

Current

15 bits plus sign

0.320 mV/cnt

0.656 μA/cnt

Update rate 2.5/5.0/7.5 ms all channels (see input update rate table)

2.5/5.0 ms all channels (see input update rate table) (1794-OF4IXT)

Output current terminal 0 mA output until module is configured

4…20 mA (user configurable

0…20 mA (user configurable

Output voltage terminal 0V output until module is configured

±10V user configurable)

0…10V user configurable)

±5V user configurable)

0…5V user configurable)

Current load on voltage

output

3 mA maximum

Resistive load on current

output

0…750 Ω

General

Attribute Value

Module location Cat. No. 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, 1794-TB3TS,

and 1794-TBN

Data format 2’s complement

2’s complement %

binary

offset binary

Conversion type Sigma Delta

Digital to analog converter (1794-OF4IXT)

Update rate 2.5/5.0/7.5 ms all channels (see input update rate table)

2.5/5.0 ms all channels (see input update rate table) (1794-OF4IXT)

Normal mode rejection ratio

- voltage or current Terminal

-3 dB @ 12 Hz (300 Hz conversion rate)

-80 dB @ 50 Hz (300 Hz conversion rate)

-3 dB @ 6 Hz (150 Hz conversion rate)

-80 dB @ 60 Hz (150 Hz conversion rate)

Common mode rejection

ratio

-120 dB @ 50/60 Hz

Step response to 63% -

voltage or current terminal

(1794-IF4IXT,

1794-IF2XOF2XT)

1200 Hz conversion rate = 0.6 ms

600 Hz conversion rate = 06.7 ms

300 Hz conversion rate = 13.4 ms

150 Hz conversion rate = 26.7 ms

Step response to 63% of full

scale (1794-OF4IXT,

1794-IF2XOF2XT)

< 25 μs

Absolute accuracy

(1)

voltage terminal

current terminal

0.1% Full Scale @ 25 °C

Accuracy drift with

temperature

Voltage terminal

Current terminal

0.0028% Full Scale/°C (1794-IF4IXT, 1794-IF2XOF2XT)

0.0012% Full Scale/°C (1794-OF4IXT)

0.0038% Full Scale/°C (1794-IF4IXT, 1794-IF2XOF2XT)

0.0025% Full Scale/°C (1794-OF4IXT)

Calibration required Factory calibrated. Can be calibrated in field when necessary

Maximum overload 30V continuous or 32 mA continuous, one channel at a time.

Indicators 1 red/green power/status indicator

Isolation voltage 120V (continuous), Basic Insulation Type, when used with 1794-TB2,

1794-TB3, 1794-TB3S, 1794-TB3T, or 1794-TB3TS

250V (continuous), Basic Insulation Type, when used with 1794-TBN

Type tested at 1500V AC for 60 s and Routine tested at 2550V DC for

s, between channel to power, channel to system, and power to

system, and channel to channel

Flexbus current 50 mA

Power dissipation 2.0 W maximum @ 31.2V DC

Thermal dissipation Maximum 6.8 BTU/hr @ 31.2V DC

Keyswitch position 3 (1794-IF4IXT)

4 (1794-OF4IXT)

5 (1794-IF2XOF2XT)

External DC Power Supply

voltage

Voltage range

Supply current

24V DC nominal

19.2…31.2V DC (includes 5% AC ripple)

80 mA @ 24V DC (1794-IF4IXT)

210 mA @ 24V DC (1794-OF4IXT)

150 mA @ 24V DC (1794-IF2XOF2XT)

Dimensions 46 mm x 94 mm x 75 mm (1.8 in. x 3.7 in. x 2.95 in.) with module

installed in base

Wire size Determined by installed terminal base

Wiring category

(2)

2 - on signal ports

2 - on power ports

Wire type

Shielded on signal ports

Enclosure

None (open-style)

Terminal screw torque Determined by installed terminal base

North American temp code T4

IEC temp code T4

(1)

Includes offset, gain, nonlinearity and repeatability error terms.

(2)

Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and

Grounding Guidelines, publication 1770-4.1.

Environmental

Attribute Value

Operating

temperature

IEC 60068-2-1 (Test Ad, Operating Cold),

IEC 60068-2-2 (Test Bd, Operating Dry Heat),

IEC 60068-2-14 (Test Nb, Operating Thermal Shock):

-20…70 °C (-4…158 °F)

Non-operating

temperature

IEC 60068-2-1 (Test Ab, Unpackaged Non-operating Cold),

IEC 60068-2-2 (Test Bb, Unpackaged Non-operating Dry Heat),

IEC 60068-2-14 (Test Na, Unpackaged Non-operating Thermal Shock):

-40…85 °C (-40…185 °F)

Relative

humidity

IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):

5…95% noncondensing

Vibration IEC 60068-2-6 (Test Fc, Operating):

5 g @ 10…500 Hz

Operating shock IEC 60068-2-27 (Test Ea, Unpackaged Shock):

30 g

Non-operating

shock

IEC 60068-2-27 (Test Ea, Unpackaged Shock):

50 g

Emissions CISPR 11:

Group 1, Class A (with appropriate enclosure)

ESD immunity IEC 61000-4-2:

6 kV contact discharges

8 kV air discharges

General

Attribute Value

1 2 3 4 5 6

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