Victron energy Skylla-IP65 User manual

Skylla-IP65
Rev 03 03/2021
ENGLISH

Table of Contents
1. Safety Instructions ................................................................................................................... 1
1.1. General ....................................................................................................................... 1
1.2. Installation .................................................................................................................... 1
1.3. Transport and storage ...................................................................................................... 1
2. Installation and wiring ............................................................................................................... 2
2.1. Installation .................................................................................................................... 2
2.2. Connecting the main battery ............................................................................................... 2
2.2.1. Main battery connection sequence .............................................................................. 2
2.2.2. Main battery disconnection sequence .......................................................................... 3
2.3. Connecting the starter battery ............................................................................................. 3
2.4. VE.Can connection .......................................................................................................... 3
2.4.1. Synchronised parallel operation ................................................................................. 3
2.4.2. Input/shore current limit .......................................................................................... 4
2.5. User relay, external sense and remote shut down ....................................................................... 4
2.5.1. External voltage sense ........................................................................................... 4
2.5.2. External temperature sense ...................................................................................... 4
2.5.3. Remote shut down ................................................................................................ 5
2.5.4. User relay connections ........................................................................................... 5
2.6. Connecting the mains ....................................................................................................... 5
3. Control and Adjustment ............................................................................................................ 6
3.1. Monitor menu ................................................................................................................ 6
3.2. Setup menu .................................................................................................................. 7
3.3. Battery selection ............................................................................................................. 9
3.4. Power supply mode ......................................................................................................... 9
3.5. Temperature compensation (dV/dT) ....................................................................................... 9
3.6. Power Control – maximum use of limited shore current .............................................................. 10
4. Operation ............................................................................................................................ 11
4.1. Battery charging ........................................................................................................... 11
4.2. Seven stage charge curve for lead-acid batteries ..................................................................... 11
4.2.1. Bulk ............................................................................................................... 11
4.2.2. Battery Safe ...................................................................................................... 11
4.2.3. Absorption ........................................................................................................ 12
4.2.4. Automatic equalization .......................................................................................... 12
4.2.5. Float .............................................................................................................. 12
4.2.6. Storage ........................................................................................................... 12
4.2.7. Weekly battery ‘refresh’ ......................................................................................... 12
4.3. Four stage charge curve for Lithium Iron Phosphate (LiFePo4) batteries .......................................... 12
4.3.1. Bulk ............................................................................................................... 12
4.3.2. Absorption ........................................................................................................ 12
4.3.3. Storage ........................................................................................................... 12
4.3.4. Weekly battery ‘refresh’ ......................................................................................... 12
5. Maintenance ......................................................................................................................... 13
6. Troubleshooting .................................................................................................................... 14
7. Temperature Compensation ...................................................................................................... 15
8. Specifications ....................................................................................................................... 16
9. Error indication ..................................................................................................................... 17
10. Dimensions ........................................................................................................................ 18
Skylla-IP65

1. Safety Instructions
1.1. General
• Please read the documentation supplied with this product first, so that you are familiar with the safety signs and directions
before using the product.
• This product is designed and tested in accordance with international standards. The equipment should be used for the
designated application only.
danger of electric shock
• The product is used in combination with a permanent energy source (battery). Even if the equipment is switched off, a
dangerous electrical voltage may still be present at the input and/or output terminals. Always disconnect the AC power and the
battery before performing maintenance.
• The product contains no internal user-serviceable parts. Do not remove the front panel unless the mains and the battery are
disconnected. Do not put the product into operation unless all panels are fitted. All maintenance should be performed by
qualified personnel.
• Never use the product at sites where gas or dust explosions could occur. Refer to the specifications provided by the
manufacturer of the battery to ensure that the battery is suitable for use with this product. The battery manufacturer's safety
instructions should always be observed.
do not lift heavy objects unassisted
1.2. Installation
• Read the installation instructions before commencing installation activities.
• This product is a safety class I device (supplied with a ground terminal for safety purposes). Its AC input and/or output
terminals must be provided with uninterruptible grounding for safety purposes. An additional grounding point is
located on the outside of the product. If it can be assumed that the grounding protection is damaged, the product should be
taken out of operation and prevented from accidentally being put into operation again; contact qualified maintenance personnel.
• Ensure that the connection cables are provided with fuses and circuit breakers. Never replace a protective device by a
component of a different type. Refer to the manual for the correct part.
• Check before switching the device on whether the available voltage source conforms to the configuration settings of the product
as described in the manual.
• Ensure that the equipment is used under the correct operating conditions. Never operate it in a wet or dusty environment.
• Ensure that there is always sufficient free space around the product for ventilation, and that ventilation openings are not
blocked.
• Install the product in a heatproof environment. Ensure therefore that there are no chemicals, plastic parts, curtains or other
textiles, etc. in the immediate vicinity of the equipment.
1.3. Transport and storage
• During storage or transport of the product, ensure that the mains supply and battery cables are disconnected.
• No liability can be accepted for damage in transit if the equipment is not transported in its original packaging.
• Store the product in a dry environment; the storage temperature should range from –20°C to 60°C.
• Refer to the battery manufacturer's manual for information on transport, storage, charging, recharging and disposal of the
battery.
Skylla-IP65
Page 1 Safety Instructions

2. Installation and wiring
2.1. Installation
Find a dry and well-ventilated area to mount the Skylla-IP65 charger and battery. Keep the cable length between the charger and
the battery less than 6 meters.
The charger may be wall or floor mounted. Always make sure that air may flow freely at the back side of the cabinet. This will
improve cooling of the charger and prolong lifetime.
Wall mounting
The unit can best be mounted vertical to a wall. See appendix for exact positions of the mounting holes.
Wiring
The inlets for the mains cable, the battery cables, the remote functions and the connection to attach the earth cable are located at
the bottom of the housing; see markings on the front panel.
6 mm bolt on left hand side mounting Earth point
Grey terminal block External Voltage sense
External Temperature sense
Remote shut down
User relay
Starter battery
VE.Can cables
Black cable glands: 2 or 4 pcs Main battery cables
Black cable gland single Mains cable
For best protection against water and dust from entering the case, all openings in the grey terminal block
should be closed, either with a suitable cable or, when no connection is used, a dummy piece of cable.
Connecting earth
Connect the earth point to the installation earth. Connections to earth have to be according to applicable safety standards.
• On a ship: connect to the earth plate or to the hull of the ship.
• On land: connect to the earth of the mains. The connection to the earth of the mains has to be according to applicable safety
standards.
• Mobile applications (a vehicle, a car or a caravan): Connect to the frame of the vehicle.
The battery connections of the charger are fully floating with respect to this grounding point
2.2. Connecting the main battery
Before the main battery is connected to the charger, make sure the charger is set to the correct battery type.
Minimum cable cross section between main battery and charger:
Skylla-IP65 type cable length up to 1.5 m cable length 1.5 m – 6 m
12/70 10 mm216 mm2
24/35 6 mm210 mm2
The largest possible cable lug that will fit through the battery cable glands is size S6-16. That cable lug will suit a maximum cable
diameter of 16 mm2 and fit on an M6 bolt.
2.2.1. Main battery connection sequence
Skylla-IP65
Page 2 Installation and wiring

The Skylla-IP65 is NOT protected against reverse polarity of the main battery. ("+" connected to "-" and "-"
connected to "+").
Follow the installation procedure. The warranty expires when the Skylla-IP65 becomes defective due to
reverse polarity.
Disconnect the mains supply before making or breaking connections to the main battery.
1. Disconnect the mains supply
2. Disconnect battery cables from the battery.
3. Remove the grey cover in the front panel of the charger, enabling access to the terminals.
4. Connect battery cables to the charger: plus (red) to “+BAT1”;
minus (black) to “-BAT”
5. Connect battery cables to the battery: plus (red) to positive pole,
minus (black) to negative pole.
6. Connect the mains supply.
2.2.2. Main battery disconnection sequence
When disconnecting the battery cables, be very careful not to accidentally short circuit the battery.
1. Disconnect the mains supply.
2. Disconnect battery cables from the battery.
3. Remove the grey cover in the front panel of the charger, enabling access to the terminals.
4. Disconnect the battery-cables from the charger.
5. Disconnect all other cables like temperature sensor and/or voltage sensor used with this particular battery.
2.3. Connecting the starter battery
The Skylla-IP65 is NOT protected against reverse polarity of the starter battery. ("+" connected to "-" and "-"
connected to "+").
Follow the installation procedure. The warranty expires when the Skylla-IP65 becomes defective due to
reverse polarity.
Disconnect the mains supply before making or breaking connections to the main battery.
The starter battery has to be connected using wire of at least 1.5 mm2 (max. 6 mm2 ).
Connect the positive (+) battery-pole to the "Starter battery plus" connector, see Figure 1.
The negative pole of the starter battery has to be connected to the “-BAT” connection of the charger.
The starter battery can draw current from the battery connected to the main battery terminals in case the
voltage of the starter battery is lower than the voltage main battery. However, the main battery cannot draw
current from the starter battery even when the starter battery is fully charged and the main battery is at
minimum charge level.
2.4. VE.Can connection
The two VE.Can connectors provide access for parallel synchronised parallel operation and remote control.
2.4.1. Synchronised parallel operation
Several charge controllers can be synchronized with the CAN interface to a maximum of 10 chargers. This is achieved by simply
interconnecting the chargers with RJ45 UTP cables (bus terminators needed.
The paralleled charge controllers must have identical settings (e.g. charge algorithm). The CAN communication ensures that the
controllers will switch simultaneously from one charge state to another (from bulk charge to absorption for example).The output
Skylla-IP65
Page 3 Installation and wiring

current of one charger may differ from another charger although connected in parallel.In case of using remote sensors (voltage
and/or temperature), the remote sensor needs to be connected to one of the parallel operating chargers. All other chargers will
share the information via the CAN interface. In case of synchronised parallel operation, the network icon will blink every 3
seconds on all paralleled units.
2.4.2. Input/shore current limit
The AC input current limit of each charger is set to 10,5 A max and can be adjusted with a CCGX device, NMEA 2000 or a
Skylla-i-control GX remote panel. See https://www.victronenergy.com/panel-systems-remote-monitoring/skylla-i-control-gx
The input power of one charger will never be more than 1050 W. This means that at 100V AC in the input current is max 10,5 A,
and at 230V AC the maximum input current is 4,5 A.
The input current limit of a parallel charger group can be set with a CCGX device or with a Skylla-i-control GX remote panel. The
current limit as shown on the device is the shore current of the group.
2.5. User relay, external sense and remote shut down
The wiring of these signals must be done with the mains disconnected from the charger.
Figure 1 Connectors for external voltage/temperature sensing, Rem. Shut down, VE.Can bus and Starter battery.
2.5.1. External voltage sense
External voltage sensing may be used when accurate battery voltage sensing is important, such as high charging currents in
combination with long cables.
To connect the external voltage sensing option, proceed as follows:
• connect a red wire (0.75 mm2 ) between the positive battery pole and connector "+ Volt. sense"
• connect a black wire (0.75 mm2 ) between the negative battery pole and connector "- Volt. sense”
2.5.2. External temperature sense
The external temperature sensor, supplied with the charger, can be connected to these terminals in order to perform temperature
compensated charging of the battery. The sensor is electrically isolated and must be connected to the positive or negative pole of
the battery.
To connect the temperature sensor, proceed as follows:
• connect the red wire to connector "+ Temp. sense"
• connect the black wire to connector "
• Temp. sense" - mount the temperature sensor on the positive or negative pole of the battery
• check in the menu for the actual temperature
Skylla-IP65
Page 4 Installation and wiring

2.5.3. Remote shut down
From factory the remote + and - are connected together with a jumper wire to turn the charger on.
In order to use the remote to shutdown the charger, remove the jumper and connect a wire to "remote -" input.
Switching the "remote -" input to battery voltage causes the charger to turn on. This wire can be used to connect to a BMS used
for lithium batteries to control the charger.
2.5.4. User relay connections
The user relay is triggered by a battery under-voltage situation (<11.8 V). The function may be used for any desirable action:
starting a generator, sounding an alarm etc.
The ratings of the relay can be found in the specification.
Table 1. Relay modes
# Description Setup Menu #
0 Skylla-i behaviour: on when charging (no error condition) and battery voltage between low
and high voltage settings
12,13,14 and 15
1 Always off
2 Temperature high > 85 ⁰C) 12 and 13
3 Battery voltage too low
4 Equalization active
5 Error condition present
6 Temperature low (< -20 ⁰C)
7 Battery voltage too high 14 and 15
8 Charger in float or storage
ON : CM connected to NO
OFF : CM connected to NC
2.6. Connecting the mains
1. Check if the battery is connected to the charger.
2. Remove the grey cover in the front panel of the charger, to access the AC input connector, see Figure 2.
3. Connect the mains earth cable (green/yellow) to the AC input connector, terminal .
4. Connect the mains neutral cable (blue) to the AC input connector terminal N.
5. Connect the mains line cable (brown) to the AC input connector terminal L.
Figure 2 Mains input terminal
Skylla-IP65
Page 5 Installation and wiring

3. Control and Adjustment
When the charger is installed correctly, the charger should be set up to suit the battery connected.
To set up the charger, apply mains power and enter the setup menu by pressing “SETUP” for three seconds.
The charger will enter a standby mode (no power applied to the battery terminals) and the user can set up the unit accordingly.
See the next table for all possible adjustments.
3.1. Monitor menu
The monitor menu is visible when power is applied to the charger.
The following table shows the consecutive lines when scrolling through the menu with the up/down keys:
Displayed info Icons Segments Units
Battery voltage / current 14 0 A
Battery voltage 14.40 V
Battery charge current 60.00 A
Battery temperature *1 25.0,---,Err °C/°F
Mains current 1C 3.6 A
Battery voltage out 1*2 1 14.4 V
Battery charge current out 1*2 1 60.0 A
Battery voltage out 2*2 2 14.4 V
Battery charge current out 2*2 2 60.0 A
Battery voltage out 3*2 3 14.4 V
Skylla-IP65
Page 6 Control and Adjustment

Displayed info Icons Segments Units
Battery charge current out 3*2 3 60.0 A
Warning message*3 *4 1 nF 65
Error message*3 *4 Err 2
BMS operation*3 BMS
*1 A valid temperature is shown. “ --- “ means no sensor information or “Err” means invalid sensor data.
*2 The output channel number is shown in the first segment; only visible in a three output model.
*3 These items are only visible when relevant.
*4 After a short delay a scrolling text is shown with the error description.
With the up/down keys the user can scroll through the monitor menu.
Holding either up or down for three seconds will start the auto scrolling mode: all Monitor menu items will be shown for 5 seconds.
The auto scroll mode can be exit by pressing up or down once.
3.2. Setup menu
The setup menu can be entered by pressing “SETUP” during three seconds.
Scrolling text Icons Segments Units Function or parameter
01 POWER ON OFF On,OFF On/off switch
02 MAXIMUM CHARGE
CURRENT
1.0-60.0 A Maximum charge current
03 SYSTEM VOLTAGE 12 V System voltage (read-only)
04 CHARGE ALGORITHM 1, 2-9 Type Charge algorithm
05 ABSORPTION VOLTAGE 8.0-14.4-15.9 V Absorption voltage
06 FLOAT VOLTAGE 8.0-14.4-15.9 V Float voltage
08 EQUALIZATION VOLTAGE 8.0-15.915.9 V Equalization voltage
09 AUTOMATIC
EQUALIZATION
OFF, AUTO Automatic equalization
10 MANUAL EQUALIZATION START Manual equalization
11 RELAY MODE rel. 08Relay Function
12 RELAY LOW VOLTAGE Lb8.0-11.6-17.4 V Low battery voltage alarm
set
13 RELAY CLEAR LOW
VOLTAGE
Lbc8.0-12.0-17.4 V Low battery voltage alarm
clear
14 RELAY HIGH VOLTAGE Hb8.0-17.1-17.4 V High battery voltage alarm
set
15 RELAY CLEAR HIGH
VOLTAGE
Hb8.0-16.7-17.4 V High battery voltage alarm
clear
16 RELAY HIGH PANEL
VOLTAGE
U 1.0-150.0 V High panel voltage alarm
set
18 RELAY MINIMUM CLOSED
TIME
?? 0-500 Relay minimum closed time
(minutes)
Skylla-IP65
Page 7 Control and Adjustment

Scrolling text Icons Segments Units Function or parameter
20 TEMPERATURE
COMPENSATION
-3.0-2.7-0.0 °C mV Battery temperature
compensation per cell
22 BULK TIME PROTECTION OFF10 A Bulk time protection
23 MAXIMUM ABSORPTION
TIME
1.0-8.024.0 h Absorption time
24 STORAGE MODE On, OFF Storage mode
25 MAXIMUM FLOAT TIME 4.0-8.0-24.0 h Maximum float time
26 REPEATED ABSORPTION
TIME
0.5-1.0-24.0 h Repeated absorption time
27 REPEATED ABSORPTION
TIME INTERVAL
0.5-7.0-45 Day Repeated absorption
interval
LOW TEMPERATURE CHARGE
CURRENT
0.0-60.0 A Low temperature charge
current
29 LOW TEMPERATURE
CHARGE CURRENT
0.0-100.0-0.0 A Max. charge current below
the low temperature level
(item 30)
30 CHARGE OFF,ON Watch function (start-up in
storage if battery voltage
>&gt;13 V
30 LOW TEMPERATURE
LEVEL
-10.0-5-10.0 °C Low temperature level (for
item 29)
31 BMS PRESENT BMS y,n BMS Present
33 POWER SUPPLY VOLTAGE 8.0-12.0-15.9 V Power supply voltage
34 INPUT CURRENT LIMIT 1c 0.0-12.
0
A Input current limit
49 BACKLIGHT INTENSITY 0-5-9 The intensity of the
backlight
50 BACKLIGHT RELAYS ON OFF,ON, AUTO Backlight automatic turn off
after 60s
51 SCROLL SPEED 1-3-5 Text scroll speed
52 Buzzer y n Buzzer
60 CAN DEVICE INSTANCE dl 0-255 VE.Can device instance
61 SOFTWARE VERSION 1.00 Software version
62 RESTORE DEFAULTS rESEt System reset to default
settings
63 CLEAR HISTORY CLEAr History data reset
64 LOCK SETUP LOCK y,n Lock setting
67 TEMPERATURE UNIT CELC,FAhr Temperature unit °C/°F
After entering the setup menu, the user can scroll through the menu with the up/down keys.
With select a menu item is entered and the present value is shown. With the up/down keys the user can scroll through the
available modes or increase/decrease the value.
By pressing select again the value/item is set.
Pressing setup shortly will return to the setup menu.
When setup is completed, exit the menu by pressing “SETUP” again three seconds.
Skylla-IP65
Page 8 Control and Adjustment

3.3. Battery selection
The charge algorithm of the charger must fit the battery type connected to the charger. The following table shows all the
predefined battery types available in the charge algorithm selection menu.
# Description Unit
type
Absorption
V
Float
V
Storage
V
Equalization
Max V @% of Inom
dV/d
T
mV/°
C
1 Gel Victron long life (OPzV)
Gel exide A600 (OPzV)
Gel MK
12 V 14.1 13.8 13.2 15.9 @ 6 % max 1hr -16
24 V 28.2 27.6 26.4 31.8 @ 6 % max 1hr 32
2Default setting
Gel Victron deep discharge,
Gel Exide A200
AGM Victron deep discharge
Stationary tubular plate
(OPzS)
Rolls Marine (flooded), Rolls
Solar (flooded)
12 V 14.4 13.8 13.2 15.9 @ 6 % max 1hr -16
24 V 18.8 27.6 26.4 31.8 @ 6 % max 1hr -32
3 AGM spiral cell
Rolls AGM
12 V 14.7 13.8 13.2 15.9 @ 6 % max 1hr -16
24 V 29.4 27.6 26.4 31.8 @ 6 % max 1hr -32
4 PzS tubular plate traction
batteries or
OPzS batteries in cyclic
mode 1
12 V 14.1 13.8 13.2 15.9 @ 6 % max
4hrs
-16
24 V 28.2 27.6 26.4 31.8 @ 6 % max
4hrs
-32
5 PzS tubular plate traction
batteries or
OPzS batteries in cyclic
mode 2
12 V 14.4 13.8 26.4 15.9 @ 6 % max
4hrs
-16
24 V 18.8 27.6 13.2 31.8 @ 6 % max
4hrs
-32
6 PzS tubular plate traction
batteries or
OPzS batteries in cyclic
mode 3
12 V 15 13.8 13.2 15.9 @ 6 % max
4hrs
-16
24 V 30 27.6 26.4 31.8 @ 6 % max
4hrs
-32
7 Lithium Iron Phosphate
(LiFePo4) batteries
12 V 14.2 n.a. 13.50 n.a. 0
24 V 28.4 n.a. 26.7 n.a. 0
8 Adjustable: maximum charge
current and absorption, float,
storage and equalization
voltages can be changed in
the setup menu
12 V Adj Adj. Adj. Adj. @ 6 % max
4hrs
Adj.
24 V Adj. Adj. Adj. Adj. @ 6 % max
4hrs
Adj.
9 Power supply mode 12 V 12.0 n.a. n.a. n.a. 0
24 V 24.0 n.a. n.a. n.a. 0
3.4. Power supply mode
The charger can be set to operate as a DC power supply.
In this mode, the charger functions as a constant voltage source:
1. an adjustable output voltage of 8.0 to 15.9 V (12 V type) resp. 16.0 to 31.8 Volt (24 V type)
2. a maximum output current of 60A (12 V type) resp. 30A (24 V type).
3.5. Temperature compensation (dV/dT)
The temperature sensor should be connected to the plus or negative pole of the battery.
The temperature compensation is a fixed setting, see table and fig. 4, and applies to all charge states.
Skylla-IP65
Page 9 Control and Adjustment

The temperature sensor must be installed when:
• ambient temperature of the battery is expected to regularly be lower than 15 °C or to regularly exceed 30 °C
• charge current exceeds 15 A per 100 Ah battery capacity
Temperature compensation is not required for Li-Ion batteries.
3.6. Power Control – maximum use of limited shore current
A maximum mains current can be set in order to avoid interruption of an external fuse in the mains supply.
Skylla-IP65
Page 10 Control and Adjustment

4. Operation
4.1. Battery charging
After applying mains power and remote shut down is not active, the display will show the following:
All icons of the screen will be visible to check the correct functioning of the display.
• The back lighting of the display is ON.
• Next the firmware version number will be displayed.
• Finally, the actual state is displayed on the screen:
• By using Voltage sensing, the actual battery voltage is shown.
Output Voltage Charge current
Battery charger mode State of charge
When the mains plug is blinking, the mains voltage is below normal and the
charger is reducing the maximum charge current.
• By using Voltage sensing, the actual battery voltage is shown.
4.2. Seven stage charge curve for lead-acid batteries
Figure 3 Voltage and current during different states in battery charging.
4.2.1. Bulk
Entered when the charger is started or when the battery voltage falls below 13.2 V / 26.4 V (due to a heavy load) during at least 1
minute. Constant current is applied until gassing voltage is reached (14.4 V / 18.8 V).
4.2.2. Battery Safe
If absorption voltage is set higher than 14.4 V / 18.8 V, the rate of voltage increase beyond 14.4 V / 18.8 V is limited to 7mV/14mV
per minute, in order to prevent excessive gassing.
Skylla-IP65
Page 11 Operation

4.2.3. Absorption
After the absorption voltage has been reached, the charger operates in constant voltage mode.
In case of adaptive charging, the absorption time is dependent on the bulk time, see section 3.2.
4.2.4. Automatic equalization
If automatic equalization has been set to ‘on’, the absorption period is followed by a second voltage limited constant current
period: see section 3.3. This feature will charge VRLA batteries to the full 100 %, and prevent stratification of the electrolyte in
flooded batteries.
Alternatively, manual equalization can be applied.
4.2.5. Float
After float charge the output voltage is reduced to storage level. This level is not sufficient to compensate for slow self-discharge
of the battery, but will limit water loss and corrosion of the positive plates to a minimum when the battery is not used.
4.2.6. Storage
After float charge the output voltage is reduced to storage level. This level is not sufficient to compensate for slow self-discharge
of the battery, but will limit water loss and corrosion of the positive plates to a minimum when the battery is not used.
4.2.7. Weekly battery ‘refresh’
Once a week the charger will enter Repeated Absorption-mode during one hour to ’refresh’ (i. e. to fully charge) the battery
4.3. Four stage charge curve for Lithium Iron Phosphate (LiFePo4) batteries
4.3.1. Bulk
Entered when the charger is started, or when the battery voltage falls below 13,5 V / 27,0 V (due to a heavy load) during at least 1
minute. Constant current is applied until absorption voltage is reached (14.2 V / 28.4 V).
4.3.2. Absorption
After the absorption voltage has been reached, the charger operates in constant voltage mode. The recommended absorption
time is 2 hours.
4.3.3. Storage
After absorption charge the output voltage is reduced to storage level. This level is not sufficient to compensate for slow
selfdischarge of the battery, but will maximize service life.
4.3.4. Weekly battery ‘refresh’
Once a week the charger will enter Repeated Absorption-mode during one hour to ’refresh’ (i. e. to fully charge) the battery.
Skylla-IP65
Page 12 Operation

5. Maintenance
This charger does not require any specific maintenance. However an annual check of the battery and mains connections is
recommended.
Keep the charger dry, clean and free of dust.
Skylla-IP65
Page 13 Maintenance

6. Troubleshooting
Problem Possible cause Solution
Charger does not function The mains is not ok Measure mains: 120 - 240 VAC
Input or output fuses are defective Return product to your dealer
The battery is not fully charged A bad battery connection Check battery connection
The wrong battery type has been selected
in the menu.
Select correct battery type in the menu.
Cable losses too high Use cables with larger cross section.
Use external voltage sensing.
The battery is being overcharged The wrong battery type has been selected
in the menu.
Select correct battery type in the menu.
A battery cell is defective. Replace battery
Battery temperature too high Overcharging or too fast charging Connect external temperature sensor
Error in display See section 9 Check all charging equipment.
Check cables and connections.
Skylla-IP65
Page 14 Troubleshooting

7. Temperature Compensation
Figure 4 Temperature compensation graph for float and absorption voltages.
Skylla-IP65
Page 15 Temperature Compensation

8. Specifications
Skylla-IP65 12/70 24/35
Input voltage (VAC) 120 – 240
Input voltage range (VAC) (1) 90 – 265
Maximum AC input current 12
Frequency (Hz) 45-65
Power factor 0,98
Charge voltage 'absorption'
(VDC) (2)
See table See table
Charge voltage 'float' (VDC) (2) See table See table
Charge voltage ‘storage’ (VDC) (2) See table See table
Charge current main batt. (A) (3) 70 35
Charge current starter batt. (A) (4) 3 4
Charge curve, lead-acid 7 stage adaptive
Recommended battery capacity
(Ah)
350-700 150-350
Charge curve, Li-Ion 2 stage, with on-off control or VE.Can bus control
Temperature sensor Yes
Power supply function Yes
Remote on-off port Yes (can be connected to a Li-Ion BMS)
CAN bus communication port Two RJ45 connectors, NMEA2000 protocol
Remote alarm relay DPST AC rating: 240 VAC/4A DC rating: 4A up to 35 VDC, 1 A up to 60 VDC
Forced cooling Yes
Protection Battery reverse polarity (fuse) Output short circuit Over temperature
Operating temp. range -20 to 60 °C (full output current up to 40 °C)
Humidity (non-condensing) max 95 %
ENCLOSURE
Material & Colour steel; blue, RAL 5012
Battery-connection M6 bolts
Mains connection screw-clamp 6 mm² (AWG 10)
Protection category IP65
Weight kg (lbs) 6 (14)
Dimensions hxwxd incl. glands in
mm in inches
401 x 265 x 151
(16 x 10.5 x 6)
STANDARDS
Safety EN 60335-1, EN 60335-2-29
Emission EN 55014-1, EN 61000-6-3, EN 61000-3-2
Immunity EN 55014-2, EN 61000-6-1, EN 61000-6-2, EN 61000-3-3
1) Output current will gradually reduce below 110
V to 50 % @ 100 V
2) Depending upon battery type as selected in the
setup menu.
3) Maximum current up to 40 °C (100 °F) ambient. Output current
will reduce to 60 % at 50 °C, and to 40 % at 60 °C.
4) Depending upon state of charge of starter battery
Skylla-IP65
Page 16 Specifications

9. Error indication
Error nr Description Possible cause Solution
1 battery temperature
too high
Overcharging or fast charging Check air flow near the battery Improve
cooling of environment. The charger
stops automatically and will resume once
the battery has cooled down
2 battery voltage too
high
Wiring mistake, or another charger
is over charging
Check all charging equipment.
Check cables and connections
3, 4, 5 temp. sense error Wiring mistake or temperature
sensor broken
Check the temperature sensor wiring and
if that doesn’t help replace the
temperature sensor
6, 7, 8, 9 voltage sense error Wiring mistake Check the voltage sensor wiring.
17 charger temperature
too high
The heat generated by the charger
cannot be removed
Check air flow of the cabinet.
Improve cooling of environment.
The charger stops automatically and will
resume once the charger has cooled
down.
18 Internal error Contact your dealer
20 charger bulk time
expired
After 10 hours of bulk charging, the
battery voltage has still not reached
the absorption voltage.
Possible cell failure or higher charge
current needed.
24 Fan failure This error indicates that the fan is
powered on but the circuit does not
measure any current draw by the
fan. Most likely the fan is either
broken or obstructed.
Contact your dealer
34 Internal error Contact your dealer
37 No input voltage
(only for the three
output version)
Mains removed or ac-input fuse
blown
Check mains availability and fuse.
65 charger disappeared
during operation
One of the other chargers with which
this charger was synchronizing has
disappeared during operation
To clear the error, switch the charger off
and back on.
66 Incompatible device The charger is being paralleled to
another charger that has different
settings and/or a different charge
algorithm
Make sure all settings are the same and
update firmware on all chargers to the
latest version.
67 BMS connection lost Connection to the BMS lost Check the VE.Can bus cabling. When the
charger needs to operate in standalone
mode again, go to the setup menu #31
(BMS Present) and set to N.
113, 114 Internal error Contact your dealer
115 Communication error Check wiring and terminators
116, 117,
118
Internal error Contact your dealer
119 Settings invalid Restore defaults in the setup menu #62.
Skylla-IP65
Page 17 Error indication

10. Dimensions
Skylla-IP65
Page 18 Dimensions