Cobra Electronics CPI 2550 Troubleshooting Guide, Specifications, TroubleshootingGuide, Solution

Troubleshooting Guide

Operation

TroubleshootingGuide

•Problem/Symptom	PossibleCauses	Solution
Low output voltage	Overload	Reduce the load.
No output voltage	Low input voltage	Recharge battery.
		Check connections
		and cable.
No outputvoltage	Thermal	Allow inverter
afterprolongeduse	shutdown	to cool off.
		Reduce load,
		continuous
		operation input
		current required.
		Improve ventilation;
		Makesure ventilation
		openings in the
		inverter are not
		obstructed.
		Reduce ambient
		temperature.
No outputvoltage,	High input	Make sure
“Protect”indicator	voltage	the inverter is
lighted		connected to
		12V battery.
		Check regulation
		of chargingsystem.
No output voltage	Short circuit	Check load for
		proper operation.
No output voltage	Inverter	Turn inverter on.
	switched off
	No power	Check wiring
	to inverter	to inverter.
	Reverse	Observe
	DC polarity	correct polarity.
Low battery alarm	Poor DC wiring	Check
on all the time		connections.
	Poor battery	Make sure battery
	condition	is fully charged.

Specifications

Operation

Specifications

•

Continuous output power (1 hour) . . . . . . . . . . . 2500W Surge rating (0.1 second) . . . . . . . . . . . . . . . . . . 5000W Peak efficiency (12V – 1⁄2 load) . . . . . . . . . . . . . . > 88% Efficiency (full load, 12V) . . . . . . . . . . . . . . . . . . . > 83% No load current draw . . . . . . . . . . . . . . . . < 0.5A (12.6V) Output waveform (resistive load) . . . Modified sine wave Output frequency . . . . . . . . . . . . . . . . . . . . 58HZ – 62HZ Output voltage . . . . . . . . . . . . . . . . . . . . . . 109V – 120V Input voltage . . . . . . . . . . . . . . . . . . 10.4VDC – 14.4VDC Alarm voltage (unload) . . . . . . . . . . . . . . .10.2V – 10.8V Shutdown voltage (unload) . . . . . . . . . . . . . 9.2V – 9.8V Operating temperature range . . . . . . . . . . . . 0°C – 40°C

(32°F – 104°F) Storage temperature range . . . . . . . . . . . . -40°C – 85°C (-40°F – 185°F)

Protection . . . . . . . . . .Overload, short-circuit, overtemp, reverse polarity, under/over voltage

Notes

All protection is automatically recovered.

To protect the battery, if the unit needs to be restarted after low voltage protection, the voltage of DC input should be above 12V.

To extend the life of the fan, it will stop when there is no load. The speed of the fan increases as the load increases.

The unit is completely insulated in input and output for added safety.

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