Phocos CX40 User Manual

The CX series is a sophisticated solar charge regulator family with exceptional features
in this price range. Beside a perfect PWM regulation with integrated temperature
compensation the controllers provide extraordinary display-, programming- and safety
functions. The battery state of charge is clearly displayed with a bar chart, as well as
energy flows from and to the battery and the load status (e.g. overload, load short
circuit). The deep discharge protection function can be set up to three different modes:
voltage controlled, SOC controlled or adaptive (fuzzy logic).
Acoustic warnings are built in, as well as a programmable nightlight function.
The CX also provides a built-in excess energy management function which means that
in combination with especially designed loads (e.g. Phocos Solar Refrigerators/Coolers
SF32E, SF50E) it is possible to make use of excess energy which would be lost
otherwise because of the overcharge protection of the battery. A better utilization of
the solar system is the benefit.
The compact case design is prepared for DIN rail mounting (mounting device available
as an accessory).
CX10, CX20, CX40
CX
Solar Charge Regulator with LC Display
Datasheet_CX_ENG 07.03.2005Subject to change without notice
www.phocos.com
Battery State-of-Charge display LCD

Charge and discharge status display

Acoustic load disconnect pre-warning

Load status indication

Choose between 3 load disconnect algorithms

boost/absorption/float PWM-regulation (series
type)

Prepared for DIN rail mounting

Automatic 12 / 24 Volt detection

Integrated temperature compensation

Covered terminals (up to 16mm² wire size)

Full solid-state protection

CX10 CX20 CX40
Charge current max. 10 A 20 A 40 A
Load current max. 10 A 20 A 40 A
System voltage 12/24 V 12/24 V 12/24 V
Self power consumption < 4 mA < 4 mA < 4 mA
Dimensions (wxhxd) 89x90x39 mm 89x90x39 mm 89x90x39 mm
Type of protection IP20 IP20 IP20
Excess
E
nergy
M
anagement
Nightlight
Function
16mm²
A
WG #6
GEL
Adaptive
Deep
D
ischarge
Protection
P
WM
Series
Regulation
12 & 24 V
DIN
R
ail
M
ounting
Phocos AG, Germany
info@phocos.com
Phocos Europe GmbH, Austria
info-europe@phocos.com
Phocos Eastern Europe S.R.L.,
Romania
info-easterneurope@phocos.com
Phocos China Ltd., China
info-china@phocos.com
Phocos India Solar Pvt. Ltd., India
info-india@phocos.com
Phocos SEA Pte Ltd, Singapore
info-sea@phocos.com
Phocos Latin America S.R.L, Bolivia
info-latinamerica@phocos.com
Phocos Rep. Office Brazil, Brazil
info-brazil@phocos.com
Phocos Rep. Office Eastern Africa,
Kenya
info-easternafrica@phocos.com
Phocos Rep. Office Southern
Africa, Namibia
info-sadc@phocos.com
Phocos SunDanzer, USA
info-usa@phocos.com
Phocos Rep. Office Australia,
Australia
info-australia@phocos.com

Phocos CX40 Specifications

General

Rated Current	40 A
Efficiency	Up to 98%
Weight	1.5 kg
Nominal System Voltage	12V / 24V auto recognition
Maximum PV Input Power	520 W (12 V) / 1040 W (24 V)
Communication	RS485
Operating Temperature	-20°C to +50°C
Battery Type	Lead Acid (Sealed, Gel, Flooded)
Protection Features	Overtemperature
Humidity	100% non-condensing

Summary

Controller Functions and Features

Description of Functions

Details the core operations, protective features, and automatic adjustments of the solar charge regulator.

Display Functions

Explains how the controller communicates battery state of charge, energy flow, and load status.

Installation and Setup Guide

Mounting and Connecting the Charge Controller

Provides step-by-step instructions for physically installing and wiring the charge controller.

Grounding the Solar System

Details the correct procedure for grounding the solar system components connected to the controller.

Starting up the Controller

Covers the initial self-test, system voltage detection, and battery type settings upon powering up.

Advanced Controller Operations

Low Voltage Disconnect Function

Explains the multiple modes available for protecting the battery from deep discharge.

Excess Energy Management Function EEM

Details how to utilize excess solar energy for compatible loads to improve system efficiency.

Nightlight Function

Describes the programmable nightlight feature for controlling load output based on light conditions.

Programming and Safety

Programming your CX

Guides users on how to navigate and set various parameters using the controller's buttons and display.

General Safety and Usage Recommendations

Provides critical safety advice and general recommendations for proper and safe operation of the controller.

Error Description

Lists potential errors, their display indicators, reasons, and recommended remedies for troubleshooting.