FLEX I/O Terminal Base Units
5
Publication 1794-IN092E-EN-P - November 2009
Working Voltage and Isolation Voltage Ratings
General
Attribute
Value
Terminal screw
torque
0.56...0.79 Nm (5...7 lb-in) (1794-TB3TK, -TB3G, -TB3GK, -TB2, -TB32, -TB3,
-TB3K, -TB3T)
0.3...0.6 Nm (2.6...5.3 lb-in) (1794-TBKD)
1.4 Nm (12 lb-in) (1794-TBN, -TBNF, -TBNFK, -TBNK)
Supply voltage
range (max)
FLEXBUS: 5V DC, 640 mA
I/O Terminals: 2A max
V/COM Terminals: 125V DC/AC, 50/60Hz, 10A (1794-TB3SK, -TB3TK,-TB2, -TB3,
-TB3K, -TB3S, -TB3TK, -TB3TS)
V/COM Terminals: 31.2V DC/AC, 50/60Hz, 10A (1794-TB3GSK, -TB3G, -TB3GS,
-TB3GK, -TB32, -TB32S
V/COM Terminals: 250V DC/AC, 50/60Hz, 10A (1794-TBN, -TBNF, -TBNFK,
-TBNK)
1794-TBKD only
FLEXBUS: 5V DC, 640 mA
Terminal Block: 120V AC, 50/60Hz, 10A
Disconnecting Switch: 3A, 20m
Ω
ATTENTION
A disconnecting switch does not shut off the current. Make or break a circuit
only under no-load conditions.
Isolation voltage
Capable of 250V (continuous) maximum, Basic Insulation Type, Field Wiring
Terminals to FLEXBUS, or the lesser of the installed module. (1794-TBN, -TBNF,
-TBNFK, -TBNK)
Capable of 125V (continuous) maximum, Basic Insulation Type, Field Wiring
Terminals to FLEXBUS, or the lesser of the installed module (1794-TB3SK,
-TB3TK, -TB3TK, -TB3TSK, -TB2, -TB3, -TB3K, -TB3S, -TB3TS)
Capable of 50V (continuous) maximum, Basic Insulation Type, Field Wiring
Terminals to FLEXBUS, or the lesser of the installed module. (1794-TB3G,
-TB3GS, -TB3GK, -TB3GSK, -TB32, -TB32S)
2500V DC/sec, Field Wiring Terminals to FLEXBUS.
220V DC/sec, Field Wiring Terminals to Functional Ground. (1794-TBKD)
Voltage rating
See Working Voltage and Isolation Voltage Ratings for nominal values
Enclosure type
rating
None (open-style)
Terminal Base 1794-
24V
120V
230V
Isolation Voltage
TBN, TBNK, TBNF, TBNFK
AC/DC
AC/DC
AC/DC
Dependent upon installed
module - refer to individual
installation instructions for
your specific module.
TB2, TB3, TB3K, TB3S, TB3SK
AC/DC
AC/DC
TB3T, TB3TS, TB3TK, TB3TSK
AC/DC
AC/DC
TB3G, TB3GK, TB3GS, TB3GSK
AC/DC
TB32, TB32S
AC/DC
TBKD
DC
AC
General
Attribute
Value
Wire size
0.34... 3.3 mm² (22…12 AWG) solid or stranded copper wire rated at 75 °C (167 °F
) or greater, 1.2 mm (3/64 in.) insulation max. Strip Length: 5-6 mm (0.20...0.24 in.)
(1794-TB3SK, -TB3GSK, -TB3TSK, -TB3GK, -TB3GS, -TB32S, -TB3, -TB3K, -TB3S,
-TB3TS, -TBN, -TBNF, -TBNFK, -TBNK)
0.34…2.1 mm² (22...14 AWG) solid or stranded copper wire rated at 75 °C (167 °F
) or greater, 1.2 mm (3/64 in.) insulation max (1794-TBKD)
0.21... 1.3 mm² (24…16 AWG) stranded copper wire rated at 75 °C (167 °F ) or
greater, 1.2 mm (3/64 in.) insulation max (1794-TB3TK, -TB3G, -TB2, -TB32)
Wiring
category
(1)
Established by installed module
North American
temp code
T4A (1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3TK,
-TB3S,-TB3SK, -TB3TS, -TB3TSK, -TBN, -TBNK, -TB32, -TB32S)
T6 (1794-TB2)
IEC temp code
T4 (1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3TK, -TB3S,
-TB3SK, -TB3TS, -TB3TSK, -TBN, -TBNK)
T6 (1794-TB2)
Dimensions,
approx.
94 x 94 x 69 mm (HxWxD) (3.7 x 3.7 x 2.7 in.)
(with module installed in terminal base)
(1)
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) (1794-TB3G, -TB3GS, -TB3GSK, -TB3GK,
-TB3, -TB3K, -TB3T, -TB3TK, -TB3S, -TB3SK, -TB3TS, -TB3TSK,
TB32, -TB32S, -TBN, -TBNK)
0…55 °C (32…131 °F) (1794-TBKD)
-20…55 °C (-4…131 °F) (1794-TBNF, -TBNFK, -TB2)
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)
-20…85 °C (-4…185 °F) (1794-TBKD)
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 (Except for 1794-TBKD)
Non-operating
shock
IEC 60068-2-27 (Test Ea, Unpackaged Shock):
50 g (Except for 1794-TBKD)
Certifications (when product is marked)
(1)
Attribute Value
UL
(1794-TB2)
UL Listed Industrial Control Equipment. See UL File E65584.
c-UL-us
(1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3TK, -TB3S, -TB3TS,
-TB3SK, -TB3TSK, -TBN, -TBNK, -TB32, -TB32S)
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.
(1794 -TBKD, -TBNF, -TBNFK )
UL Listed Industrial Control Equipment, certified for US and Canada. See UL File
E65584.
CSA
(1794-TB2, -TB3, -TB3K, -TB3T, -TB3S, -TB3TS, -TB3TK, -TB3SK, -TB3TSK, -TBN,
-TBNK, -TB3G, -TB3GK, -TB3GS, -TB3GSK)
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.
(1794-TBNF, -TBNFK)
CSA Certified Process Control Equipment. See CSA File LR54689C.
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)
European Union 2006/95/EC LVD, compliant with:
EN 61131-2; Programmable Controllers (Clause 11)
General
