Rockwell-automation 1794-IF4ICFXT FLEX I/O Isolated Input Analog Modul Manuel d'utilisateur télécharger pdf (Page 4)

Publication 1794-IN130A-EN-P - December 2009

Set the Input Filters

Power/status Indicator

The OK status indicator is bicolor red and green. The indicator flashes

green for any of the following 3 reasons:

1. The module configuration word is zero (for example, powerup

reset condition).

2. The 24V DC user power is off.

3. The module is in configuration mode.

The indicator displays red to indicate the module did not pass the initial

hardware test. Recycle power.

After powerup, if the status indicator is not flashing green or solid green,

recycle module power to verify a proper reset of the bus interface.

Specifications

1 1 0 1 4…20 mA 7.5 ms 5.0 ms

1 1 1 0 ±10V 2.5 ms 2.5 ms

1 1 1 1 ±5V 2.5 ms 2.5 ms

(1)

When IT = 1, the channel update rate for all channels is determined by the slowest channel.

Input Channel Configuration

03 02 01 00 Set these bits for channel 0

07 06 05 04 Set these bits for channel 1

11 10 09 08 Set these bits for channel 2

15 14 13 12 Set these bits for channel 3

Bit Settings A/D Conversion Rate Low Pass Filter

0 0 0 0 1200 Hz No low pass

0 0 0 1 1200 Hz 100 ms low pass

0 0 1 0 1200 Hz 500 ms low pass

0 0 1 1 1200 Hz 1000 ms low pass

0 1 0 0 600 Hz No low pass

0 1 0 1 600 Hz 100 ms low pass

0 1 1 0 600 Hz 500 ms low pass

0 1 1 1 600 Hz 1000 ms low pass

1 0 0 0 300 Hz No low pass

1 0 0 1 300 Hz 100 ms low pass

1 0 1 0 300 Hz 500 ms low pass

1 0 1 1 300 Hz 1000 ms low pass

1 1 0 0 150 Hz No low pass

1 1 0 1 150 Hz 100 ms low pass

1 1 1 0 150 Hz 500 ms low pass

1 1 1 1 150 Hz 1000 ms low pass

General

Attribute Value

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

Number of inputs 4 isolated

Resolution

Voltage

Current

16 bits - unipolar; 15 bits plus sign - bipolar

0.156 mV/cnt unipolar; 0313 mV/cnt bipolar

0.320 μA/cnt unipolar; 0.640 μA/cnt bipolar

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

Input current terminal 4…20 mA (user configurable)

0…20 mA (user configurable)

±20 mA (user configurable)

Input voltage terminal ±10V (user configurable)

0…10V (user configurable)

±5V (user configurable)

0…5V (user configurable)

Input Resistance

Voltage terminal

Current terminal

>10 MΩ

<100 Ω

(3)

Data format 2’s complement

2’s complement %

binary

offset binary

Conversion type Sigma Delta

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

Normal mode rejection

ratio - voltage or current

Termina l

-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

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

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

0.0038% Full Scale/°C

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 1 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

External DC Power

Supply voltage

Voltage range

Supply current

24V DC nominal

SUPPLY: 19.2-31.2V DC, 80 mA

FLEXBUS: 5V DC, 50 mA

Input: 0…20 mA, ±10V DC

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 type rating None (open-style)

Terminal screw torque Determined by installed terminal base

North American temp

code

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.

(3)

If 24V DC is removed from the module, input resistance = 10 kΩ

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

General

Attribute Value

1 2 3 4 5 6

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Rockwell-automation 1794-IF4ICFXT FLEX I/O Isolated Input Analog Modul Manuel d'utilisateur Page 4

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