CM4 Four-Point Continuous Monitor
CM4 Technical Manual
G-4
G.3 LonWorks Retrofit
LonWorks capability can be added to existing Model CM4 gas monitors
using the items contained in this kit and following the installation
instructions. The LonWorks upgrade kit (P/N 1874-0344) contains all
the parts needed to upgrade tabletop, wall mount, and rack mount
units.
Since the kit is designed to accommodate all configurations, some of
the parts in the kit will not be used in your installation.
The chart below shows the mounting configurations covered by this kit:
Model Table-top
and Wall Mount
Old Style Rack
Mount
New Style Rack
Mount
CM4 (S/N < 5000)
X
X
X
CM4 (S/N > 5000)
X
X
X
CM4-P
X
X
X
G.3.1 Parts
The parts have been packaged in seven bags. Check to make sure
the bags are identified and the parts are included in each bag. Do not
remove parts from the bags until you are ready to install them.
Bag 1: LonWorks PC Board
Qty Description
Application
1 LonWorks interface with screws and foam
insulator
All configurations
1 Label, LonWorks Option
Used over mounting holes, all
configurations
1 Insulator (white)
Table and wall units; used between I/O and
LonWorks interfaces
Bag 2: EPROMs
Qty Description
Application
1 EPROM LSB
Latest software revision
1 EPROM MSB
Latest software revision
Software V2.07 or later must be used for operating LonWorks on
Model
CM4. Check the software version in your Model CM4 and replace the
EPROMS if necessary.
Bag 3: Electrical Connection Bracket
This bag contains a bracket to mount the LonWorks interface on either
table or wall mount units. The existing bracket in the Model CM4 does
not have the necessary holes, and therefore must be replaced for
LonWorks installations.
Qty Description
Application
1 Bracket
Desktop and wall mount
Bag 4: Electrical Cable for Serial Communication
Some of the first production Model CM4 units were shipped without
the serial communications cable. Most of these units were installed in
a rack mount configuration. This bag contains a cable that has been
prefolded for rack mount installations. If the Model CM4 is a table or
wall unit, the folds can be flattened.
Qty Description
Application
1 Serial Cable Assembly
Prefolded for rack installation
1 Spacer, Dielectric Cable
Used to secure cable to chassis wall
Bag 5: Insulator for Rack Mount
In newer rack-mounted Model CM4s, a metal cover is installed over
serial communication interfaces. Older rack mount units used a
plastic insulator. The plastic insulator is not large enough to protect
珠海司福斯特科技有限公司
www.safedtech.com