Cellwatch Frontier System Installation & User Manual
Section I – Installation Guide-40
4. Place two tab washers on the next positive post connected on the opposite side of the strap
connected to the dual tabbed negative post. This is the connection for the white wire of DCM n
and the brown wire of DCM n+1.
5. Repeat steps 2 through 4 until the last negative post of the battery is reached. Place two tab
washers on this post.
Double tabbing the battery
Short strings
A battery configuration where the number of cells or monitoring points is not divisible by four will
require special consideration for the connection of DCMs. To monitor these strings, a DCM will likely
have null channels. The DCM can be fitted on a wide range of voltage and can monitor as little as 4 (qty.)
Ni-Cd cells and as many as 4 (qty.) 16V VRLA containers.
Channel 1
st
Sense Wire 2
nd
Sense Wire
1 Red Orange
2 Orange Yellow
3 Yellow Green
4 Green Blue
Note: The Red and Blue sense wires are often paired with their respective Brown and White load
wires for the DCM.
Should null channels be required, then the channel sense wires on one of the DCMs on the string will be
tied together beginning with channel 4. For instance, a string of 30 measuring points would have 2
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