Cellwatch Frontier System Installation & User Manual
Section I – Installation Guide-22
The DCM5-DS looks similar to the DCM5T, but it has an extra black wire that is connected to the same
post as the yellow sense wire at the center of the 48-volt string. This wire allows the DCM to have two
independent Ohmic current sources each operating over half of the string.
The DCM5-DS should be wired to the jars in the same way as a conventional DCM but with the black
wire on the same post as the yellow.
Warning: To prevent damage to the DCM5-DS the black wire
must NOT be connected to either the white or brown DCM
power wires
Note: The maximum operating voltage for the DCM5-DS is 60 volts so it cannot be used with four 16-
volt jars.
DCM5-DS Specifications
Description DCM5-DS
Environment
Operating temperature 0 to 60ºC
Relative Humidity 5 - 95% non-condensing
Maximum Altitude 3,000 meters (10,000ft)
Power supply 10 - 60 Volts DC
black/white or black/brown
30 volts
6 – 12 volt containers 2, 3 or 4 containers
4-volt container 4 containers
Protection
Transient suppression 600W
Short circuit protection Internal 3-amp fuse
Insulation resistance 1000 MΩs >1Kv
Operating current
Quiescent current 25ma
Sleep current after 25 hours <2ma
During Ohmic testing 0.5 amp
Measurement Characteristics Range Resolution Accuracy
Voltage 0 to 60 volts 2mV 0.1% +/-5mv
Ohmic Value 1 to 65mΩ 1µΩ 1.5%
Temperature -ve post (optional) 2 to 80ºC 0.01ºC +/- 1ºC
Ripple Voltage across 4 jars 40Hz - 1 KHz 0 to 4 volts rms 2mv rms 2% +/-5mv rms
Fiber Optic Specification
Optic cable Acrylic
Sheathing Fluorine containing polymer
Core diameter 1.0 mm
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