ABB SNAT604IFS relay control unit
NOTICE – Equipment damage. When handling electronic parts and assemblies, it is
necessary that proper electrostatic discharge (ESD) precautions be taken (i.e., wear an ESD
wrist strap with a grounding cable and use an ESD shielded bag to protect items removed).
2.1 Analyzer location
The analyzer should be located as close to the sample stream as practical. The analyzer must be
installed in a shelter or area protected from direct sunlight and harsh weather. It is recommended that
a minimum clearance of six inches be allowed on each side of the analyzer panel to allow for making
the necessary connections.
The analyzer must be mounted so that it is level.
The analyzer should be adequately supported during mounting since its approximate weight is 90 kg
(200 pounds). Connections should not be made to the analyzer until it is mounted securely in place.
The atmospheric exhaust (detector cell vent) must be an atmospheric vent.
2.1.1 Master controller
The Master Controller contains a Mounting Plate with a Single Board Computer (SBC), a Power Supply,
one or more SBC CAN Interface Cards, and optional Wago input/output modules. The front panel
assembly has a liquid crystal display (LCD), keypad, and front panel board.
The Master Controller can be located up to 100 meters (328 feet) from the associated oven. The
Master Controller communicates with the oven through a fiber optic cable. The customer is responsible
for locating the Master Controller in accordance with the customer-specified area classification
indicated on the nameplate.
When determining where to install the Master Controller, consider the following location criteria:
Installation must be a pollution degree 2 environment or better
Electromagnetic compatibility
Area classification indicated on the nameplate
Equipment ingress protection is IP54
Protection from rain, direct sunlight, temperature extremes
Ambient operating temperature is 0 to 50 degrees C (32 to 122 degrees F)
Avoid exposure to corrosive gas
Not intended for a combustible dust environment
Not intended for below surface mining applications
Free from dust and static electricity
Space of at least 152 mm (6 inches) to the right side of the Master Controller if purge
equipped
Space of at least 610 mm (24 inches) in front of the Master Controller for servicing
Space of at least 279 mm (11 inches) above the Master Controller if x-purge is utilized

2.1.2 Master controller as an RUI
The Master Controller as an RUI contains a Mounting Plate with a Single Board Computer (SBC) and a
Power Supply, with no SBC CAN Interface Cards and no Wago input/output modules. The front panel
assembly has a liquid crystal display (LCD), keypad, and front panel board.
The Master Controller as an RUI can be located anywhere that has access to an Ethernet connection.
The customer is responsible for locating the Master Controller in accordance with the customer specified area
classification indicated on the nameplate. When determining where to install the Master
Controller as an RUI, use the same location criteria as a regular Master Controller.
2.1.3 Ovens
Locate the ovens as close to the stream to be sampled as practical. The customer is responsible for
locating oven(s) in accordance with the customer-specified area classification indicated on the
nameplate.
When determining where to install the oven, include the following location criteria:
Installation must be a pollution degree 2 environment or better
Electromagnetic compatibility
Area classification indicated on the nameplate
Equipment ingress protection is IP54
Protection from rain, direct sunlight, temperature extremes