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Phocos CIS05-2L/10-2L/20-2L

Solar Charge Controller with Programmable Night-Light Function User Manual (English)

Dear customer, thank you very much for buying this Phocos product. Please read the instructions 
carefully and thoroughly before using the product. It comes with a number of outstanding features, 
such as:

Case protection: IP68 protection, in 1.5 m water depth 72 Hours.
Dual load
Control unit (CU) to configure CIS charge controller via infra-red data link
External temperature sensor for temperatur compensation of charge voltages
Widely programmable
3 stage charging (boost, equalization, float) for flooded battery, 2 stage charging  (boost, 
float) for sleaded battery
Automatic recognition of system voltage 12/24 V

Connecting and Grounding

State of charge (SOC) controlled: Disconnect at 11.00 V/22.00 V to 11.70 V/23.40 V (SOC1), 
11.12 V / 22.24 V to 11.76 V / 23.52 V (SOC2), 11.25 V / 22.50 V to 11.83 V / 23.63 V (SOC3), 
11.38 V / 22.72 V to 11.89 V / 23.78 V (SOC4), 11.51 V / 23.02 V to 11.96 V / 23.92 V (SOC5), 
11.64 V/ 23.28 V to 12.02 V / 24.04 V (SOC6) .
Voltage controlled (LVD): Disconnect at a fixed voltage between 11.0 V / 22.0 V and 11.9/23.8 V 
(Step 0.1V).

Reverse polarity
Short circuit
Over current
Reverse current
Over voltage
Under voltage
Over temp.

WARNING: The combination of different error conditions may cause damage to the controller. 
Always remove the error before you continue connecting the controller!

The manufacturer shall not be liable for damages, especially on the battery, caused by use other 
than as intended or as mentioned in this manual or if the recommendations of the battery manufacturer 
are neglected. The manufacturer shall not be liable if there has been service or repair carried out 
by any unauthorized person, unusual use, wrong installation, or bad system design.

Liability Exclusion

Technical Data

Subject to change without notice. Version: 200900629
Made in one of the following countries: 
Germany - China - Bolivia - India
Phocos AG - Germany www.phocos.com
CID:181812411

RoHS

ISO9001

Safety Features

Battery terminal
Protected (1)
Protected (3)
N/A
N/A
Max. 40 V
N/A

Solar terminal
Protected (1)
Protected
N/A
Protected
Max. 55 V (4)
N/A

Load terminal
Protected (2)
Switches off immediately
Switches off with delay
N/A
Switches off above 15.5 V / 31.0 V
Switches off

Reduces the charging current by PWM if over temperature occurs and 
switches off the load if the temperature reaches a high level.

Display & Warning Functions

Factory Settings

Low Voltage Disconnect Function (LVD)

The CIS controller comes with a sophisticated night-light function. It controls the load output 
at night and is widely programmable. Dual load outputs are independently programmable.
There are 3 modes available:
Standard Controller, Dusk to Dawn and Evening/Morning modes.

Night-Light Function

Note: The two voltage levels before/ after the slash are valid for 12 V and 24 V systems respectively.

1 2 3 4

5

6 7 8

The controller recognizes day and night based on the solar array open circuit voltage. This 
day/night threshold can be modified according to local light conditions and the solar array used.

"Middle of night" is detected automatically as the midpoint between dusk and dawn, no setting 
of a clock is required. It may take several days until the controller has "learned" the middle of 
the night precisely.
 "Middle of night" may be different from 12:00 midnight depending on your location.

Testing Function

Pushing the test button on the CU (Control Unit) will switch on both load terminals for 2 minutes. 
If pressing the button causes a load disconnect event (LVD/SOC, over current) the load will be 
switched off.

(1) Controller can not protect itself in a 24 V system; V

panel

-V

battery

 is limited to 40 V.

(2) Controller can protect itself, but loads might be damaged.
(3) Battery must be protected by fuse, or battery will be permanently damaged.
(4) The solar panel voltage should not exceed this limit for a long time as voltage protection 
is done by a varistor.

Nominal voltage
Boost voltage
Equalization voltage
Float voltage
Load disconnect voltage

Load reconnect voltage
Evening hours
Morning hours
Night/day detect
Battery type
Temp. compensation
Max. solar current
Max. load current
Dimensions
Weight
Wire size
Typical power consumption
Ambient temp. range**
Case protection
Max altitude

Status
On
Flash
Off
On
Flash
Off
On
Flash
Off
Green-->Red-->Green-->..

Function
Controller connected to battery, night detected
Controller connected to battery, day detected
No battery connected
Load 1 low/high voltage disconnect(LVD/HVD)
Load 1 over current
Load 1 OK
Load 2 low/high voltage disconnect(LVD/HVD)
Load 2 over current
Load 2 OK
Programming

LED

1

2

All LED

You can configure CIS charge controllers via the Control Unit (CU). See CU manual for details.

Load mode
Low voltage disconnect
Battery type

Factory setting
Standard controlller
SOC4
Sealed

Light on

Standard Controller Mode

Light off

Dusk to Dawn Mode

Evening/Morning Mode

Hours 

after dusk

Light on

Hours to middle 

of night

Light off

Light on

Hours after 

middle of night

Hours to 

dawn

Middle of night

12/24 V, automatic recognition
14.4/28.8 V (25 °C), 2 h
14.8/29.6 V (25 °C), 2 h
13.8/27.6 V (25 °C)
11.00-12.02 V/22.00-24.04 V By SOC
11.0-12.0 V/22.0-24.0 V By voltage
12.8/25.6 V
0-15 hours
0-14 hours
2.5-10 V
Flooded, Sealed
-4.2 mV/K per cell
5/10/20, According to model number @ 60 °C
5/10/20, According to model number @ 60 °C
82 x 58 x 20 mm
150 g
CIS05: 1.5 mm

2

; CIS10: 2.5 mm

2

; CIS20: 4 mm

2

Lower than 8/10mA
-40 to +60 °C
IP68 (1.5 m, 72 h)
4000 m

1

2

4

3

7

8

6

5

** :At 60 °C CIS can only have full current on Panel or Load, not together

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