Allen-Bradley FLEX I/O Terminal Base Units Installation Instructions

Installation Instructions
FLEX I/O Terminal Base Units
1794-TB2, -TB3, -TB3K, -TB3S, -TB32, -TB32S, -TB3G,
-TB3GK, -TB3GS, -TB3T, -TB3TS, -TBN, -TBNK, -TBNF,
-TBNFK, -TBKD, -TB3SK, -TB3GSK, -TB3TK, -TB3TSK
(Modules with a K in the last position of the catalog number are conformally coated
to meet noxious gas requirements of ISA/ANSI-71.040 1985 Class G3
Environment.)
WARNING
WARNING
When you insert or remove the module while backplane power is on, an
electrical arc can occur. This could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous
before proceeding.
If you connect or disconnect wiring while the field-side power is on, an
electrical arc can occur. This could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous before
proceeding.
Important User Information
Solid state equipment has operational characteristics differing from those of electromechanical
equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State
Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at
http://www.literature.rockwellautomation.com) describes some important differences between
solid state equipment and hard-wired electromechanical devices. Because of this difference, and
also because of the wide variety of uses for solid state equipment, all persons responsible for
applying this equipment must satisfy themselves that each intended application of this equipment is
acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential
damages resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of
the many variables and requirements associated with any particular installation, Rockwell
Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and
diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information,
circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of
Rockwell Automation, Inc. is prohibited.
Throughout this manual we use notes to make you aware of safety considerations.
Identifies information about practices or circumstances that can cause an
WARNING
explosion in a hazardous environment, which may lead to personal injury or
death, property damage, or economic loss.
IMPORTANT
ATTENTION
ATTENTION
Identifies information that is critical for successful application and
understanding of the product.
Identifies information about practices or circumstances that can lead to
personal injury or death, property damage, or economic loss. Attentions
help you identify a hazard, avoid a hazard, or recognize the consequence
Environment and Enclosure
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment
according to IEC/CISPR 11. Without appropriate precautions, there may be
difficulties with electromagnetic compatibility in residential and other
environments due to conducted and radiated disturbances.
This equipment is supplied as open-type equipment. It must be mounted
within an enclosure that is suitably designed for those specific
environmental conditions that will be present and appropriately designed
to prevent personal injury resulting from accessibility to live parts. The
enclosure must have suitable flame-retardant properties to prevent or
minimize the spread of flame, complying with a flame spread rating of
5VA, V2, V1, V0 (or equivalent) if non-metallic. The interior of the enclosure
must be accessible only by the use of a tool. Subsequent sections of this
publication may contain additional information regarding specific
enclosure type ratings that are required to comply with certain product
safety certifications.
In addition to this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for additional installation
requirements.
• NEMA Standards 250 and IEC 60529, as applicable, for
explanations of the degrees of protection provided by different
types of enclosure.
ATTENTION
ATTENTION
FLEX I/O systems are grounded through the DIN rail to chassis ground. Use
zinc plated yellow-chromate steel DIN rail to assure proper grounding. The
use of other DIN rail materials (for example, aluminum or plastic) that can
corrode, oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately.
Prevent Electrostatic Discharge
This equipment is sensitive to electrostatic discharge, which can cause internal
damage and affect normal operation. Follow these guidelines when you handle
this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in
use.
ATTENTION
ATTENTION
ATTENTION
Do not remove or replace a Terminal Base unit while power is applied.
Interruption of the backplane can result in unintentional operation or machine
motion.
Do not wire more than 1 conductor on any single terminal.
Personnel responsible for the application of safety-related Programmable
Electronic Systems (PES) shall be aware of the safety requirements in the
application of the system and shall be trained in using the system.
Publication 1794-IN092E-EN-P - November 2009
2 FLEX I/O Terminal Base Units
North American Hazardous Location Approval
FLEX I/O Spring-clamp Terminal Base Units
The following terminal bases are Hazardous Location approved: 1794-TBN,
-TBNK, -TB2, -TB3, -TB3K, -TB3S, - TB3SK, -TB3G, TB3GK, -TB3GS,
-TB3GSK, -TB3T, -TB3TK, -TB3TS, -TB3TSK, -TB32S, -TB32.
The following information applies when operating
this equipment in hazardous locations:
Informations sur l’utilisation de cet équipement en
environnements dangereux :
Products marked “CL I, DIV 2, GP A, B, C, D” are suitable for
use in Class I Division 2 Groups A, B, C, D, Hazardous
Locations and nonhazardous locations only. Each product is
supplied with markings on the rating nameplate indicating
the hazardous location temperature code. When combining
products within a system, the most adverse temperature
code (lowest “T” number) may be used to help determine the
overall temperature code of the system. Combinations of
equipment in your system are subject to investigation by the
local Authority Having Jurisdiction at the time of
installation.
Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent
qu’à une utilisation en environnements de Classe I Division 2
Groupes A, B, C, D dangereux et non dangereux. Chaque produit
est livré avec des marquages sur sa plaque d’identification qui
indiquent le code de température pour les environnements
dangereux. Lorsque plusieurs produits sont combinés dans un
système, le code de température le plus défavorable (code de
température le plus faible) peut être utilisé pour déterminer le
code de température global du système. Les combinaisons
d’équipements dans le système sont sujettes à inspection par les
autorités locales qualifiées au moment de l’installation.
EXPLOSION HAZARD
WARNING
AVERTISSEMENT
• Do not disconnect equipment
unless power has been removed
or the area is known to be
nonhazardous.
• Do not disconnect connections to
this equipment unless power has
been removed or the area is
known to be nonhazardous.
Secure any external connections
that mate to this equipment by
using screws, sliding latches,
threaded connectors, or other
means provided with this product.
• Substitution of components may
impair suitability for Class I,
Division 2.
• If this product contains batteries,
they must only be changed in an
area known to be nonhazardous.
RISQUE D’EXPLOSION
• Couper le courant ou s’assurer que
l’environnement est classé non
dangereux avant de débrancher
l'équipement.
• Couper le courant ou s'assurer que
l’environnement est classé non
dangereux avant de débrancher les
connecteurs. Fixer tous les
connecteurs externes reliés à cet
équipement à l'aide de vis, loquets
coulissants, connecteurs filetés ou
autres moyens fournis avec ce
produit.
• La substitution de composants peut
rendre cet équipement inadapté à
une utilisation en environnement de
Classe I, Division 2.
• S’assurer que l’environnement est
classé non dangereux avant de
changer les piles.
Cat. No. 1794-TB3S, -TB3SK, -TB32S, -TB3GS, -TB3GSK, -TB3TS, -TB3TSK
10
4
1
3
11
5
2
6
7
8
9
12
12
FLEX I/O Terminal Base Units
Cat. No. 1794-TBN, -TBNK
10
4
1
3
11
6
5
2
8
15
9
FLEX I/O Fused Terminal Base Units
European Hazardous Location Approval
The following adapters are European Zone 2 approved: 1794-TBN, -TBNK, -TB2,
-TB3, -TB3K, -TB3S, - TB3SK, -TB3G, TB3GK, -TB3GS, -TB3GSK, -TB3T,
-TB3TK, -TB3TS, -TB3TSK.
Cat. No. 1794-TBNF, -TBNFK
10
4
1
This equipment is intended for use in potentially explosive atmospheres as defined by European
Union Directive 94/9/EC and has been found to comply with the Essential Health and Safety
Requirements relating to the design and construction of Category 3 equipment intended for use
in potentially explosive atmospheres, given in Annex II to this Directive.
Compliance with the Essential Health and Safety Requirements has been assured by compliance
with EN 60079-15 and EN 60079-0.
Observe the following additional Zone 2 certification requirements.
• This equipment is not resistant to sunlight or other sources of UV
radiation.
• This equipment must be installed in an enclosure providing at least IP54
protection when applied in Zone 2 environments.
• This equipment shall be used within its specified ratings defined by
Allen-Bradley.
• Provision shall be made to prevent the rated voltage from being
exceeded by transient disturbances of more than 40% when applied in
Zone 2 environments.
• Secure any external connections that mate to this equipment by using
screws, sliding latches, threaded connectors, or other means provided
with this product.
• Do not disconnect equipment unless power has been removed or the
area is known to be nonhazardous.
14
3
European Zone 2 Certification (The following applies when the product bears the Ex
or EEx Marking)
WARNING
13
11
5
2
6
6
14
15
9
FLEX I/O Knifeswitch Terminal Base Unit
Cat.Cat.
NoNo.
1794-TBKD
1794-TBKD
10
4
3
1
16
11
5
2
6, 7
6, 7
9
Description
FLEX I/O Cage-clamp Terminal Base Units
Cat. No. 1794-TB2, -TB3, -TB3K, -TB32, -TB3G, -TB3GK, -TB3T, -TB3TK
10
1
4
3
11
1794-TB2
5
2
6
7
8
9
1794-TB3, -TB3K, -TB32,
-TB3G, -TB3GK, -TB3T, -TB3TK
1
2
3
4
5
6, 7,
8
9
10
11
12
13
14
15
16
Publication 1794-IN092E-EN-P - November 2009
Female flexbus connector
Terminal base unit
Male flexbus connector
Keyswitch - set to the position required for the installed module
Mounting holes for panel mounting
Input/output terminal strips for connecting inputs/output wiring, commons, power
connections, customer power supplies, chassis grounds
Locking tab
Module locking latch
Cover plug for male flexbus connector
Cold-junction compensation terminals (1794-TB3T, -TB3TS, -TB3TK, -TB3TSK only)
Chassis ground terminations (1794-TB3T, -TB3TS, -TB3TK, -TB3TSK, -TB3G, -TB3GS,
-TB3GSK only)
Fuses - eight 5x20 mm (1794-TBNF, -TBNFK only)
Terminal strip cover (1794-TBN, -TBNK -TBNF, -TBNFK only)
Knife switches (1794-TBKD only)
FLEX I/O Terminal Base Units
3
Mount the Terminal Base Unit on a DIN Rail
ATTENTION
During mounting of all devices, be sure that all debris (such as metal chips or
wire strands) is kept from falling into the module. Debris that falls into the
module could cause damage upon application of power.
1. Remove the cover plug (if used) in the male connector of the unit to which
you are connecting this terminal base unit.
2. Check to make sure the 16 pins in the male connector on the adjacent
device are straight and in line so that the mating female connector on this
terminal base unit will mate correctly.
Gently push the flexbus connector into the side of the side of the adapter to
complete the backplane connection.
6. Refer to the installation instructions for specific wiring information for the
module you are installing in this terminal base.
3. Make certain the female connector (B) is fully retracted.
4. Position the terminal base unit on the 35 x 7.5 DIN rail (A) (A-B pt no.
199-DR1).
ATTENTION
Do not force the terminal base into the adjacent base/adapter. Forcing the units
together can bend or break the hook and allow the units to separate and break
communication over the backplane.
7. Repeat the above steps to install the next terminal base.
When using FLEX I/O modules in a high-vibration installation, especially when
mounting the DIN rail vertically, use DIN-rail locks (A-B part number
1492-EA35) to prevent accidental separation of the terminal block units.
ATTENTION
Wire Connections for the Terminal Base Units
DIN Rail
B
Wiring
Connections
for the
1794-TB32,
-TB32S
Wiring
Connections
for the
1794-TB32,
1794-TB32S
A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
C
A
Inputs/Outputs
17
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
B
A
NC
NC
Inputs/Outputs
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C
Position the terminal base at a slight angle and hook it over the top of the DIN rail.
NC +V1 COM1 +V1 COM1 +V1 COM1 +V1 COM1 +V2 COM2 +V2 COM2 +V2 COM2 +V2 COM2 NC
+V1 = Terminals 35, 37, 39, 41
+V2 = Terminals 43, 45, 47, 49
COM1 = Terminals 36, 38, 40, 42
COM2 = Terminals 44, 46, 48, 50
NC = No connections (terminals 16, 33, 34, 51)
C
(1794-TB32 shown)
Wiring
Connections
forfor
thethe
1794-TB2,
-TB3,
-TB3K, -TB3S,
TB3SK
Wiring
Connections
1794-TB2,
1794-TB3,
1794-TB3K,
1794-TB3S
Inputs
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
A
17
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
B
Make sure the hook (C) on the terminal base slides under the edge of the adapter and the
flexbus connector is fully retracted. Slide the terminal base over, tight against the adapter.
5. Rotate the terminal base onto the DIN rail with the top of the rail hooked
under the lip on the rear of the terminal base. Use caution to make
sure that the female flexbus connector does not strike any of
the pins in the mating connector.
-V
Common
Commons
-V
Common
35
34
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C
Voltage
In +V
Voltage
Out +V
Terminals 35 to 50 not available on 1794-TB2
Voltage
(1794-TB3 shown)
-V (Common) = Terminals B-16 and B-33
+V (Voltage In) = Terminals C-34 and C-51
For daisy-chaining: Supply in - C-34 (+) and B-16 (-)
Supply out - C-51 (+) and B-33 (-)
WiringWiring
Connections
for the
1794-TB3G,
-TB3GK,
-TB3GS,
-TB3GSK
Connections
for the
1794-TB3G,
1794-TB3GK,
1794-TB3GS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
A
Inputs/Outputs
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
B
Chassis
Ground
34
Chassis
Ground
Inputs/Outputs
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
NC
+V
COM
C
+V COM
24V dc
Supply In
Press down on the terminal base to lock it on the DIN rail. If the terminal base does not lock
into place, use a screwdriver or similar device to open the locking tab, press down on the
base, and release the locking lever to lock the base in place.
NC
Chassis
Ground
I/O
Chassis Grounds for Shields
Chassis
Ground
24V dc
Supply Out
I/O
(1794-TB3G shown)
+24V dc = Terminals C-34, C-50
COM = C-35, C-51
Chassis Ground = Terminals B-16, B-33, C-38, C-40 through 45, C-47
NC = No connection
For daisy-chaining: Supply in - C-34 (+), C-35 (-)
Supply out - C-50 (+), C-51 (-)
Publication 1794-IN092E-EN-P - November 2009
4 FLEX I/O Terminal Base Units
Wiring Connections for the 1794-TBN, 1794-TBNK, 1794-TBNF, 1794-TBNFK
Even Numbered I/O Terminals 0 to 14
COM
″ Insert a 2.54…3.05 mm (0.10…0.12 in.) wide-bladed screwdriver into the slot and lift up.
Insert wire, and remove screwdriver.For Cage-clamp Terminal Base Units: 1794-TB2,
COM
16
4
2
0
6
8
10
14
12
33
B
34
3
1
5
11
9
7
13
-TB3, -TB3K, -TB3T,-TB3TK, -TB3G, -TB3GK, -TB32
51
15
C
+V
″ Tighten screws to 0.8 Nm (7 lb-in).
+V
For Knifeswitch Cage-clamp Terminal Base Unit: 1794-TBKD
Odd Numbered I/O Terminals 1 to 15
″ Tighten screws to 0.53 Nm (6 lb-in).
(1794-TBN shown)
+V = Terminals C-34, C-51
COM (-V) = Terminals B-16, B-33
For NEMA Screw-clamp Terminal Base Units: 1794-TBN, -TBNK, -TBNF,
-TBNFK
″ Tighten screws to 1.02 Nm (9 lb-in).
Wiring Connections
for the 1794-TB3T,
TB3TK, -TB3TS,
-TB3TSK
Wiring Connections
for the- 1794-TB3T,
-TB3TS
Inputs/Outputs
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Install or Change a Fuse in the 1794-TBNF or 1794-TBNFK Terminal Base
Unit
15
A
Channel Channel Channel Channel Channel Channel Channel Channel
+ 0 -- + 1 -- + 2 -- + 3 -- + 4 -- + 5 -- + 6 -- + 7 -17
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
N7
C
This terminal base unit has fuse holders for 5x20 mm fuses on each of the eight
even-numbered I/O terminals (0 through 14 - row B). To install or change a fuse:
1. Press the fuse holder down toward the terminal strip.
B
C
C
34
N0
35
C
36
N1 C
37
38
N2 C
39
40
N3 C
41
For Spring-clamp Terminal Base Units: 1794-TB3S, -TB3TS, -TB3GS, -TB32S,
-TB3SK, -TB3TSK, -TB3GSK
42
N4 C
43
44
N5 C
45
46
N6 C
47
48
49
50
51
Press down to open.
C
CJC
+V Supply
In
CJC
Chassis Ground
+V) = 24V dc Supply In - Terminals C-34, C-35
-V = 24V dc Common Terminal B-16
+V Supply
Out
(1794-TB3T shown)
+V = Supply Out - Terminals C-50, C-51
-V = Terminal B-33
C = -V dc common
2. Remove the fuse from the fuse holder.
Wiring Connections
for Connections
the 1794-TBKD
Wiring
for the 1794-TBKD
CH0
CH1
CH2
CH3
CH4
CH0 RET CH1 RET CH2 RET CH3 RET CH4 RET CH5
17
18 19
20
21
22
23 24
25
26
27
16
3. Insert a known good 5x20 mm fuse into the fuse holder.
CH6
CH5
CH7
RET CH6 RET CH7 RET
28
29
30
31 32
4. Rotate the fuse holder back to vertical until it snaps into the locked
position.
33
B
-V
Common
34
-V
Common
Inputs/Outputs
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C
Voltage
In +V
Voltage
Out +V
Common
+V (Voltage In) = Terminals C-34, C-51
-V (Common) = Terminals B-16, B-33, C-35 through C-50
For daisy-chaining: Supply in - C-34 (+), B-16 (-)
Supply out - C-51 (+), B-33 (-)
The 1794-TBNF and 1794-TBNFK terminal base units are shipped with eight 5x20
mm, 1.6 A, 250V AC slow-blow fuses, one for each even-numbered terminal (0
through 14 on row B). These fuses are suitable for use with the 1794-OA8 AC
output module. Refer to the specific installation instructions for fusing
recommendations for your particular module.
Use the Knifeswitch Terminal Base
The knifeswitch terminal base has 16 individual mechanical-knifeswitch circuit
breakers (two for each channel). Each switch opens or closes one side (input/output
and return) for a channel.
Typical Wiring Guidelines
Wiring when total current draw through base is less than 10 A.
Modules in this configuration must be all analog or all digital.
1. Place a small-bladed screwdriver into the slot of the knifeswitch of the I/O
point circuit that you wish to break.
Wiring when total current draw through base is greater than 10 A.
Total current draw through any base must not be greater than 10 A.
2. Rotate downward to open the circuit.
This opens the path of an individual circuit.
3. To reestablish the circuit, rotate the knifeswitch back into the terminal base
unit until it snaps into place.
Thermocouple
or Analog Module
Digital Module
Digital Module
Digital Module
24V dc
24V dc
24V dc
Use separate power supplies for analog and digital modules.
Wiring when there is a mix of analog and digital modules.
Terminal base units are rated at 10 A.
Publication 1794-IN092E-EN-P - November 2009
FLEX I/O Terminal Base Units
5
General
North American
temp code
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)
T4A (1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3TK,
-TB3S,-TB3SK, -TB3TS, -TB3TSK, -TBN, -TBNK, -TB32, -TB32S)
T6 (1794-TB2)
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, 20mΩ
IEC temp code
T4 (1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3TK, -TB3S,
-TB3SK, -TB3TS, -TB3TSK, -TBN, -TBNK)
T6 (1794-TB2)
Dimensions,
approx.
(1)
94 x 94 x 69 mm (HxWxD) (3.7 x 3.7 x 2.7 in.)
(with module installed in terminal base)
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)
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)
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
2500V DC/sec, Field Wiring Terminals to FLEXBUS.
220V DC/sec, Field Wiring Terminals to Functional Ground. (1794-TBKD)
Vibration
IEC 60068-2-6 (Test Fc, Operating):
5 g @ 10…500 Hz
Voltage rating
See Working Voltage and Isolation Voltage Ratings for nominal values
Operating shock
Enclosure type
rating
None (open-style)
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)
Working Voltage and Isolation Voltage Ratings
Terminal Base 1794-
24V
120V
230V
Isolation Voltage
TBN, TBNK, TBNF, TBNFK
AC/DC
AC/DC
AC/DC
TB2, TB3, TB3K, TB3S, TB3SK
AC/DC
AC/DC
TB3T, TB3TS, TB3TK, TB3TSK
AC/DC
AC/DC
Dependent upon installed
module - refer to individual
installation instructions for
your specific module.
TB3G, TB3GK, TB3GS, TB3GSK
AC/DC
TB32, TB32S
AC/DC
TBKD
DC
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.
AC
(1794 -TBKD, -TBNF, -TBNFK )
UL Listed Industrial Control Equipment, certified for US and Canada. See UL File
E65584.
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)
CSA
(1794-TBNF, -TBNFK)
CSA Certified Process Control Equipment. See CSA File LR54689C.
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)
CE
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
(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.
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)
Publication 1794-IN092E-EN-P - November 2009
Certifications (when product is marked)(1)
C-Tick
Australian Radiocommunications Act, compliant with:
AS/NZS CISPR 11; Industrial Emissions
Ex
(1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3S, -TB3TS, TB3TK,
-TB3SK, -TB3TSK, -TBN, -TBNK)
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)
(1794-TB2)
European Union 94/9/EC ATEX Directive, compliant with:
EN 60079-15; Potentially Explosive Atmospheres, Protection "n" (II 3 G Ex nA IIC T6 X)
EN 60079-0; General Requirements (Zone 2)
TÜV
(1)
(1794-TB3G, -TB3GS, -TB3GSK, -TB3GK, -TB3, -TB3K, -TB3T, -TB3S, -TB3TS, -TB3TK,
-TB3SK, -TB3TSK, -TBNF, -TBNFK)
TÜV Certified for Functional Safety:
Capable of SIL 2
See the Product Certification link at http://www.ab.com for Declaration of Conformity, Certificates, and
other certification details.
A
35
(1.4)
94
(3.7)
59
(2.3)
23
(0.9)
35
(1.4)
Mounting Dimensions
21 (0.83)
mm
(in.)
50
(2.0)
80
(3.2)
94
(3.7)
80
(3.2)
87
(3.4)
28
(1.2)
68
(2.7)
94
(3.7)
Adapter (1794-ASB shown) Terminal Base (1794-TB3S shown)
87 x 68 x 69
94 x 94 x 69
(3.4 x 2.7 x 2.7)
(3.7 x 3.7 x 2.7)
Secure DIN rail approximately every 200 mm (7.87 in.).
Maintain at least 25.4 (1.0) air space around your FLEX I/O system installation.
A = Mounting hole dimensions for optional mounting kit.
B = DIN rail.
C = Operating temperature 25.4 (1.0) below each module when mounted in any position
must not exceed 55 ˚C (131 ˚F).
Publication 1794-IN092E-EN-P - November 2009 6
94
(3.7)
B
Terminal Base (1794-TB3 shown)
94 x 94 x 69
(3.7 x 3.7 x 2.7)
C
Measure here for
vertical mounting
position with
adapter up.
Measure here for horizontal position.
PN-64237
Copyright © 2009 Rockwell Automation, Inc. All rights reserved.
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