Rockwell Automation 1794-IJ2XT 2 Input Frequency Module Installation Instructions - Manual (Page 2)

2
Publication 1794-IN049D-EN-P - January 2009
North American Hazardous Location Approval
The following frequency input modules are North American Hazardous
Location approved: 1794-IJ2, 1794-IJ2K, and 1794-IJ2XT.
Installing Your Frequency Input Module
The module mounts on a 1794-TB3G or -TB3GS terminal base.
1. Rotate the keyswitch (1) on the terminal base (2) clockwise to
position 1 as required for this type of module.
2. Make certain the flexbus connector (3) is pushed all the way to the
left to connect with the neighboring termbase/adapter. You
cannot install the module unless the connector is fully
extended.
3. Make sure the pins on the bottom of the module are straight so
they will align properly with the connector in the terminal base.
4. Position the module (4) with its alignment bar (5) aligned with the
groove (6) on the terminal base.
5. Press firmly and evenly to seat the module in the terminal base
unit. The module is seated when the latching mechanism (7) is
locked into the module.
Connecting Wiring for the 1794-TB3G, and -TB3GS
Connect wiring as shown here.
Wiring Connections for the Frequency Input Module using the 1794-TB3G
or -TB3GS Terminal Base Unit
WARNING
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.
ATTENTION
To comply with the CE Low Voltage Directive (LVD), all connections to this
equipment must be powered from a source compliant with the following:
Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).
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.
WARNING
EXPLOSION HAZARD
• 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.
AVERTISSEMENT
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.
ATTENTION
During mounting of all devices, be sure that all debris (metal chips, wire
strands, etc.) is kept from falling into the module. Debris that falls into the
module could cause damage on power up.
1
2
3
4
5
6
7
WARNING
If you remove or insert the module while the 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.
ATTENTION
To reduce susceptibility to noise, power analog modules and digital modules
from separate power supplies. Do not exceed a length of 3 m (9.8 ft) for DC
power cabling.
ATTENTION
Do not daisy chain power or ground from this terminal base unit to any AC or
DC digital module terminal base units.
Output Alarm
Connections Channel 0 Terminals 1 Channel 1 Terminals 1
Sply + Sply
RET
Out + Out
RET
Sply + Sply
RET
Out + Out
RET
Supply C-37 C-39 C-46 C-48
Output B-17 B-18 B-31 B-32
1 Connect cable shields to GND connections.
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 34
Wiring Connections for the 1794-TB3G and -TB3GS
Chassis
Ground
(1794-TB3G shown)
Chassis
Ground
+V COM
24V dc
Supply In
+V COM
24V dc
Supply Out Chassis Grounds for Shields
Chassis
Ground Chassis
Ground
+24V dc = Terminals C-34 and C-50
COM = C-35 and C-51
Chassis Ground = Terminals B-16, B-33, C-38, C-40 thru 45, and C-47
A
B
C
For daisy-chaining: Supply in - C-34 (+) and C-35 (-)
Supply out - C-50 (+) and C-51 (-)
3V 6V 24V
PWR RET 50
mV
SEL 500/50
mV
SEL F 24V
PWR 24V
PWR 24V
PWR 3V 6V RET 50
mV
SEL 500/50
mV
SEL F
RET 50
mV
SEL 500/50
mV
SEL G 24V
PWR 24V
PWR RET 50
mV
SEL 500/50
mV
SEL G OUT 0 OUT 0
RET
OUT 1 OUT 1
RET
Channel 0 Frequency Input
Channel 0 Gate Input
Channel 1 Frequency Input
Channel 1 Gate Input
Sply0 Sply0
RET Sply1 Sply1
RET
Channel 0 Output Supply Channel 1 Output Supply
NC NC
NC = No connection
NC NC