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Publication 1794-IN049D-EN-P - January 2009

On-state voltage drop

0.9V DC at 1 A

Output control

Outputs individually assignable to: Frequency, % Full Scale or Acceleration 
Alarm

Output switching time

Triggered by frequency  alarm or acceleration alarm

 

Turn on: Less than 0.5 ms

 

Turn off: Less than 1 ms

General 

Module location

Cat. No. 1794-TB3G and -TB3GS Terminal Base Units

External DC power 

 

Voltage range

 

Supply voltage

 

Supply current

(Input for +5V logic and 24V DC/DC converters)

 

19.2…31.2V DC (includes 5% AC ripple)

 

24V DC nominal

 

220 mA @ 19.2V DC; 180 mA @ 24V DC; 140 mA @ 31.2V DC

Isolated DC power

 

Voltage range

 

Supply voltage

 

Supply current

 

Peak AC ripple

(Output to sensors and encoders)

 

21.6…26.4V DC

 

24V DC nominal

 

0-60 mA maximum @ 24V DC (4 devices @ 15 mA = 60 mA)

 

100 mV maximum

Dimensions (with 
module installed in 
base)

94H x 94W x 69D mm (3.7H x 3.7W x 2.7D in.)

Isolation voltage

50V (continuous), Basic Insulation Type

 

Type tested at 1365V AC for 60 s, between field side and system and 
individual channels

Processing time

<4 ms

Flexbus current

30 mA at 5V DC

Power dissipation

4.6W maximum at 31.2V DC

Thermal dissipation

Maximum 15.6 BTU/hr at 31.2V DC

Indicators (field side 
driven, logic side 
indication)

1 green/red power/status indicator

 

4 yellow status indicators (Freq 0, 1, Gate 0, 1) 

 

4 red wire-off indicators (Freq 0, 1, Gate 0, 1)

 

2 yellow status indicators (Out 0, Out 1) - logic side

Keyswitch Position

1

Wire size

Determined by installed terminal base

Wiring category

1

2 - on signal ports

 

3 - on power ports

Wire type

Shielded on signal ports

Terminal screw torque Determined by installed terminal base

Enclosure type rating

None (open-style)

North American temp 
code

T4A

IEC temp code

T4

Environmental 

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):

 

0…55 °C (32…131 °F) (1794-IJ2 and 1794-IJ2K)

 

-20…70 °C (-4…158 °F) (1794-IJ2XT)

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:

 

4 kV contact discharges (1794-IJ2 and 1794-IJ2K)

 

6 kV contact discharges (1794-IJ2XT)

 

8 kV air discharges

Radiated RF immunity IEC 61000-4-3:

 

10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz

 

10V/m with 200 Hz 50% Pulse 100% AM at 900 MHz

 

10V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz

 

3V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz

EFT/B immunity

IEC 61000-4-4:

 

±2 kV at 5 kHz on power ports

 

±2 kV at 5 kHz on shielded signal ports

Surge transient 
immunity

IEC 61000-4-5:

 

±2 kV line-earth(CM) on shielded signal ports

Conducted RF 
immunity

IEC 61000-4-6:

 

10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz on shielded 
signal ports

Certifications

Certifications 
(when product is 

marked)

2

Value

c-UL-us

UL Listed Industrial Control Equipment, certified for US and Canada. See UL 
File E65584.

 

UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified 
for U.S. and Canada. See UL File E194810.

CSA

 

(1794-IJ2 and 
1794-IJ2K)

CSA Certified Process Control Equipment. See CSA File LR54689C.

 

CSA Certified Process Control Equipment for Class I, Division 2 Group A,B,C,D 
Hazardous Locations. See CSA File LR69960C.

CE

European Union 2004/108/EC EMC Directive, compliant with:

 

EN 61326-1; Meas./Control/Lab., Industrial Requirements

 

EN 61000-6-2; Industrial Immunity

 

EN 61000-6-4; Industrial Emissions

 

EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)

C-Tick

Australian Radiocommunications Act, compliant with:

 

AS/NZS CISPR 11; Industrial Emissions

Ex

European Union 94/9/EC ATEX Directive, compliant with:

 

EN 60079-15; Potentially Explosive Atmospheres, Protection "n" (II 3 G  Ex nA 
IIC T4 X)

 

EN 60079-0; General Requirements (Zone 2)

TÜV

TÜV Certified for Functional Safety:

 

up to and including SIL 2

1 Use this Conductor Category information for planning conductor routing. Refer to Industrial 
Automation Wiring and Grounding Guidelines, publication 

1770-4.1

.

2 See the Product Certification link at 

http://www.ab.com

 for Declaration of Conformity, Certificates, 

and other certification details.

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