Instruction Manual
748441-D
April 2002
Rosemount Analytical Inc. A Division of Emerson Process Management
Installation 2-7
Model CAT100
propriate header. The header should have
a means of being purged when venting
dangerous gases. Insure that there is no
backpressure in the vent system as this
will cause variations in the repeatability of
the system.
g. Electrical
Connections
NOTES
1) The enclosure is a NEMA 4X/ IP 55.
All entry locations must be sealed.
2) North American area classification
– Class I Zone 1, Group IIB +H
2
T4.
CENELEC Category 2 – Zone 1,
Group IIB +H
2
T4.
3) Readily accessible main power
disconnect to be supplied by cus-
tomer.
4) Electrical installation to be in ac-
cordance with National Electrical
Code. (ANSI/NFPA 70) and or other
applicable national or local codes.
Connect all required signal cables to
the Increased Safety Junction Box. The
cable entry locations are indicated on
the inside cover of the junction box.
The actual electrical connections will
be specified in the Application Data
package. All connections are not nec-
essary for every application.
All analog/digital inputs and ana-
log/digital/serial outputs are made
through the Increased Safety Junction
Box. Cable length for these signals
should not exceed 3,000 feet (914 me-
ters), to avoid excessive capacitance
and corresponding signal distortion.
The following connections are made
through the Increased Safety Junction
Box:
•
Electrical Power
•
2 Analog Outputs
•
Optional 3 Analog Inputs (for TC
cross compensation)
•
8 Digital Outputs
•
RS 232/RS 485 or Optional
FIELDBUS
•
Optional 3 Relay Outputs
NOTE
Connections must be made as follows:
USA: ½” Rigid Metal Conduit
European Union: Certified Glands
Canada: Either
NOTE
The Increased Safety Junction Box
must be protected by fuse supply
which has a breaking capacity ad-
justed to the short circuit of the
equipment.
Terminal Description
Top 16 (C-wht)
VDC Gnd
Top 17 (C-wht/blk)
0 (2) – 10 VDC [option
0 (0.2) – 1 VDC], Channel 1
Top 18 (C-wht/brn)
0 (4) – 20 mA, Channel 1 (R
B
≤
500
Ω
)
Top 19 (C-wht/red)
0 (2) – 10 VDC [option 0 (0.2) – 1 VDC], Channel 2
Top 20 (C-wht/org)
0 (4) – 20 mA, Channel 2 (R
B
≤
500
Ω
)
Bottom 16 (C-wht/yel)
mA return (Gnd)
Bottom 17 (C-wht/grn)
mA return (Gnd)
Bottom 18 (C-wht/blu)
mA return (Gnd)
Bottom 19 (C-wht/vio)
mA return (Gnd)
Table 2-1. Analog Output Terminal Assignments
