Computronic Sentinel 150P series Installation and operating instructions

Sentinel 150P series

Programmable, automatic switch mode battery chargers

Installation, Operation and Maintenance

This Manual Refers to the Following Models

Open

frame

models

SNTL150P1205CD

SNTL150P2405CD

SNTL150P1205CDA

SNTL150P2405CDA

For safe and correct use of these chargers, read and save the safety

information that precedes the installation and operation instructions.

This guide contains 8 pages (including this one). If any pages are missing,

contact the battery charger supplier or manufacturer for replacement

documentation.

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

Computronic Controls products and the Computronic Controls logo are registered and/or common law trademarks of Enovation Controls LLC.

41 –46 Railway Terrace, Nechells,

Birmingham, B7 5NG, United Kingdom

Web: www.computroniccontrols.com

For sales & support, contact:

ENOVATION CONTROLS LTD.

Church Road, Laverstock,

Salisbury, SP1 1QZ, United Kingdom

Phone: +44 1722 410055

Fax: +44 1722 410088

E-mail: [email protected]

Web: www.computroniccontrols.com

www.fwmurphy.eu/computronic

ENOVATION CONTROLS

5311 S 122nd East Avenue,

Tulsa, OK 74146, USA

Phone: +1 918 317 4100

Fax: +1 918 317 4266

E-mail: [email protected]

Web: www.fwmurphy.com

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Important Safety Information –Read and Save These Instructions

This manual contains important safety and operating instructions for all SNTL150P models.

Do not expose the battery charger to rain, snow or wet environments.

The use of any attachment not recommended or sold by the battery charger manufacturer may result in risk of fire,

electric shock or injury to persons.

Do not operate the charger if it has received a sharp blow, been dropped, or otherwise damaged in any way: return to

supplier.

Do not disassemble the charger: return to supplier when service or repair is required. Incorrect re-assembly may result

in a risk of electric shock, fire or faulty operation.

WARNING –RISK OF EXPLOSIVE GASES

WORKING IN THE VICINITY OF A LEAD ACID BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE

GASES DURING NORMAL BATTERY OPERATION.

To reduce the risk of battery explosion, follow these instructions and those published by battery manufacturers and the

manufacturer of any equipment you intend to use in the vicinity of the battery. Review cautionary marking on these

products and any attached equipment.

PERSONAL PRECAUTIONS.

(i) Someone should be within range of your voice or close enough to come to your aid when you work near a lead-acid

battery.

(ii) Have plenty of fresh water and soap nearby in case battery acid contacts skin, eyes or clothing.

(iii) Wear complete eye protection and clothing protection. Avoid touching eyes whilst working near batteries.

(iv) If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters eyes, immediately

flood eyes with running cold water for at least 10 minutes and get immediate medical attention.

(v) NEVER smoke or allow a spark or flame in vicinity of battery.

(vi) Be extra cautious to reduce risk of dropping a metal tool on to the battery. It may spark or short-circuit the battery or

other electrical part that may cause explosion.

(vii) Remove personal metal items such as rings, bracelets, necklaces and watches when working with batteries. High

power batteries can produce a short-circuit current high enough to weld a ring or the like to metal, causing a severe

burns.

(viii) Use the charger only for charging battery types as stated on the charger. Do not use the charger for charging dry-

cell batteries that are commonly used with home appliances. These batteries may burst and cause injury to persons

and damage to property.

(ix) DANGER OF EXPLOSION! NEVER CHARGE A FROZEN BATTERY

PRIOR TO INSTALLATION / COMMISSIONING

Clean battery terminals. Be careful to keep corrosion from coming into contact with eyes.

Add distilled water in each cell until the battery acid reaches a level specified by battery manufacturer. This helps purge

excessive gas from the cell. Do not overfill. For a battery without cell caps, carefully follow manufacturer’s recharging

instructions.

Study all battery manufacturer’s specific precautions, such as removing or not removing cell caps while charging and

recommended rates of charge.

Determine the voltage of battery by referring to engine manual and ensure this matches the charger’s output voltage.

CHARGER LOCATION AND CONNECTION

DANGER OF EXPLOSION! Never place the charger directly above battery being charged: gases from the battery will

corrode and damage the charger.

Never allow battery acid to drip on to the charger when reading specific gravity or filling battery.

Do not operate the charger in a closed-in area or restrict ventilation in any way.

The battery charger should be connected to a grounded, metal, permanent wiring system; or an equipment–grounding

conductor should be run with circuit conductors not connected to equipment-grounding terminal on the battery charger.

Connections to the battery charger should comply with all local codes and ordinances.

Open frame SNTL models –these chargers should be installed so that they are not likely to be contacted by people.

Wiring for the AC supply input, DC charge output and DC control (e.g. alarm output) circuits must be physically

separate, e.g. using separate wire harnesses and cable gland access. For AC input and ground leads, use 1mm²/17

AWG or larger wire conductors rated to 90°C/194°F. For DC (charger to battery) leads, use 2.5mm²/13 AWG or larger.

For safe and correct use of the charger, follow the following steps. Should you have any problems or the unit does not

function as expected, consult our troubleshooting guide at the end of these instructions.

Visually inspect unit for any signs of damage, caused by transport or storage.

Mount the charger as outlined above, paying attention to ambient temperature.

Ensure the mains AC supply is isolated, and ensure the correct rated input voltage before connection.

Ensure the charger is earthed at the marked earth terminal/stud.

Check batteries in accordance with the manufacturer’s guidelines.

Check that the charger is correct for battery type and voltage.

Connect the charger to the batteries, observing correct polarity and ensuring a secure and tight connection.

Switch on the charger at the mains AC power supply.

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BEFORE BEGINNING INSTALLATION OF THIS PRODUCT

Disconnect all electrical power to the charger

Make sure the charger cannot operate during installation

Follow all safety warnings of the battery manufacturer

Read and follow all installation instructions

W A R N I N G

Sentinel 150P battery chargers provide new levels of DC

power control, monitoring and protection for engine

starting and standby battery applications. Computronic

advanced charger features included as standard:

Switch mode charging technology: high power

efficiency and low heat dissipation, plus wide supply

voltage tolerance, in a compact and lightweight package.

Multistage charging: float, bulk, absorption and

AutoBoost stages ensure no compromise between rapid

charge recovery and long term battery capacity and life.

Low output ripple: <1% ripple, beneficial for vented

lead acid & NiCd cells, essential for VRLA, and

configurable for use as a stand-alone DC power supply.

AutoBoost: triggered automatically on low battery

voltage levels, or by a programmable interval timer,

AutoBoost temporarily increases the charge voltage to

give battery cell charge equalization, without overcharge

and gassing. At the end of the AutoBoost cycle,

Sentinel automatically returns to float mode charging.

AutoBoost maximizes battery power, capacity and

service life.

On SNTL150P..CDA models, a programmable input can

be configured to activate AutoBoost, regardless of

battery voltage. The input is typically triggered using an

operator-initiated panel push-switch.

Temperature compensation: ensures batteries are

charged at the optimal voltage, which varies

significantly with ambient temperature. Sentinel can

measure temperature with a battery mounted sensor,

and adjust output voltage to prevent under or over

charging.

PC software tool: allows flexible, custom

configurations, plus real time monitoring and

diagnostics. See page 6 for details of Sentinel to PC

hardware connection, or separate document ci0052 for

information on software installation, operation and

program options.

All Sentinel 150P chargers are available as an open-

frame module (with protective cover) for surface mounting

in an enclosed panel. Electrical connection of the AC

supply, battery and control circuits is via screw terminal

blocks.

Model options

Model codes with suffix 'A' (SNTL150P.... CDA)

additionally include an input for charger control and an

output for remote signalling of alarm conditions.

Both input and output functions are programmable using

the SNTL150P-PCSUITE software tool. See Configuration

section for a list of programmable input and output

functions.

Specifications

power supply:

SNTL150P

1205CD(A)

SNTL150P

2405CD(A)

operating voltage range:

operating frequency

95 –265 V AC

47 –63 Hz

DC charge output:

nominal voltage

float / boost voltages

see DC output calibration table

current limit

voltage ripple

< 1%

line regulation

< 2%

load regulation

< 2%

input/output (SNTL150P...A models only):

input (x1)

digital (switch) input,

close to –DC to activate,

programmable control function

output (x1)

relay switched +DC,

1A max @ 30 VDC,

programmable alarm function

general:

operating temperature

–30 to +60 °C / –22 to +140 °F

storage temperature

–40 to +60 °C / –40 to +140 °F

humidity

20% to 90% RH

dimensions

see Dimensions & Assembly

weights

see Dimensions & Assembly

electrical safety

2006/95/EC (EN 60065)

electromagnetic compatibility

2004/108/EC

(EN 61000-6-2, EN 61000-6-4)

DC output calibration

Standard calibrations / battery types

float volts

(V DC)

boost volts

(V DC)

12V

Vented lead acid (6 cells) *

13.5

14.1

Calcium-Calcium (6 cells)

13.8

15.6

Lead acid antimony(6 cells)

13.5

14.7

VRLA, AGM(6 cells)

13.5

14.4

VRLA, Gel (6 cells)

13.5

13.8

NiCd (10 cells)

14.1

14.5

Power supply

12.0

n/a

24V

Vented Lead acid (12 cells) *

27.0

28.2

Calcium-Calcium (12 cells)

27.6

31.2

Lead acid antimony(12 cells)

27.0

29.4

VRLA, AGM(12 cells)

27.0

28.8

VRLA, Gel (12 cells)

27.0

27.6

NiCd (18 cells)

25.6

26.1

NiCd (20 cells)

28.2

29.0

Power supply

24.0

n/a

* Unless specified otherwise, factory default calibrations are for

vented lead acid

Note: Calibration figures at 20 deg C. Output voltage will vary if

temperature compensation is enabled –see Electrical Connection &

Configuration section.

General Information

Please read the following before installing. A visual inspection of this product for damage during shipping is

recommended before installation. It is your responsibility to ensure that qualified mechanical and electrical

technicians install this product. If in doubt, please contact your local Computronic representative.

Sentinel 150P installation, operation & maintenance

ci0050 p4/8 issue 5 2014-08-26

Dimensions and Assembly

CAUTION: Sentinel 150P chargers should be handled by the circuit board cover. Care should be taken not to

handle static sensitive components through exposed circuit boards and terminals.

SNTL150P

12V models

24V models

Overall:

108.6 mm / 4.28 in.

135 mm / 5.31 in.

45 mm / 1.77 in.

55 mm / 2.17 in.

Fixing holes:

99 mm / 3.90 in.

Ø 5.65 mm / 0.22 in.

Weight:

0.65 kg / 1.43 lb.

0.75 kg / 1.65 lb.

These chargers are designed for mounting in a vertical plane inside an enclosed control panel or housing.

Mounting orientation should be as shown above, with electrical connection terminals uppermost.

For safe heat dissipation, mount Sentinel in the orientation shown, with a minimum air-gap clearance of 40mm/1.5 in.

above/below and 25mm/1 in. at the sides. Consideration must be given to ventilation for proper heat dissipation.

For surface mounting, use the 2 centre fixing holes (Ø 5.65mm/0.22 in.). Ensure that the mounting studs/bolts/nuts/screws

adequately support the charger, and are tightened sufficiently to not to become loose during normal use, e.g. due to

engine/equipment vibration..

Electrical Connection & Configuration

DANGER !

HIGH VOLTS

WARNING: DANGER OF INJURY OR DEATH. During normal operation, Sentinel is

connected to high voltage AC circuits. Before connection, disconnection or handling of

these chargers, ensure isolation of all AC power supplies. Connection or disconnection with

live wiring can also cause hazardous sparking and component damage.

Connection terminals (general)

The Sentinel 150P uses a pair of two-part connectors with

removable screw terminal blocks:

CN1: a 7-way block for connection of the DC charge

output, temperature compensation remote sensor, relay

output and configurable input. Use a 5 mm/0.2 in. flat-

head screwdriver to tighten/loosen the terminals. For the

DC output, use 2.5mm/13AWG or larger connecting

wire.

CN3: a 3-way block for connection of the mains AC power

supply live, neutral and ground. Use a 5mm/0.2in flat-

head screwdriver to tighten/loosen the terminals.

For all AC supply/ground wiring, use 1mm/17AWG or

larger wire conductors rated for temperature 90°C/194°F.

For external fuse details, see the AC Input (power

supply) section following.

3 LEDs (coloured blue, green, red) provide indication of AC

supply, DC charge output and fault status.

For all models, wire connections for the DC charge output

(connector block CN1) and AC input supply (CN3) must be

physically separated, e.g. separate wire harnesses,

separately routed through the panels/ducting.

DC Charge Output

Before DC connection or disconnection:-

Ensure AC supply input is isolated.

Disconnecting the batteries while the

AC supply is live can result in sparking at

the battery terminals, ignition of battery

gasses and serious personal injury.

Check that the charger model and output

ratings are compatible with battery type &

voltage (see table below). Incompatibility

may result in damage to the charger,

batteries and serious personal injury.

Connect the Sentinel DC charge output to the battery terminals,

observing the warnings above and the correct

DC polarity:

CN1

Function

+ DC charge output

–DC charge output

All SNTL150P models include an electronic, self-resetting DC

output fuse for protection of reverse polarity and short-circuit

faults. In the event of such faults, remove the cause of fault: the

charger will then attempt to automatically reset its fuse and re-

initialise the output. If the fuse fails to reset, contact your supplier

for further advice.

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TC: Temperature Compensation

CN1

Function

RTC (remote temperature compensation) sensor+

Ground (for RTC sensor return)

These terminals allow optional connection of a Computronic

RTC temperature sensor. With the RTC sensor connected,

and the sensor head positioned to give the most accurate/

representative measurement of battery temperature, the

SNTL150P will automatically vary DC output voltage for

optimal charging.

Temperature compensation is enabled automatically

when a remote RTC sensor is connected. For each 1°C

change in ambient temperature above or below 20°C

(within the range -10 to +50°C), output voltage

automatically varies by 3mV per cell. Increasing ambient

temperatures causes decreasing output voltages;

decreasing ambient temperatures causes increasing

output voltages.

CN1 terminals 3 and 4 are designed for connection to a

Computronic RTC sensor only. DO NOT connect other

types of temperature sensor, such as thermocouples,

thermistors or resistance probes. The standard

Computronic RTC sensor (part code 42.70.3619) includes

a 3 metre lead assembly. Non-standard lead lengths are

available to special order.

An RTC sensor short-circuit fault is indicated by a fast-

flashing red LED in the Sentinel's protective cover.

If no RTC sensor is connected, temperature

compensation is automatically disabled and the output

voltage does not vary with ambient temperature.

Programmable input and output

CN1

Function

Relay output (switched +ve DC)

Output/input common return (–ve DC)

Input (–ve DC to activate)

Model codes with suffix 'A' (models SNTL150P...CDA)

additionally include one relay output and one digital

(switch) input. The functions of input and output can be

configured using the SNTL150P-PCSUITE software tool.

Output

The switched +DC relay output allows the signalling of

battery and charger faults to remote alarms, annunciators

or other equipment. Maximum output load is 1A @

30VDC.

The software tool allows configuration of the output to

activate on one or more fault conditions:

mains fail *

DC connection error *

battery missing

remote temp sensor short

high voltage alarm

low voltage alarm

charge fail alarm *

* enabled as factory default

For most combinations of the above faults, the output

relay operates as follows:

Charger conditions

Pin 5 relay output state

Normal operation, no faults

+ DC

(relay energised)

Any fault

Open circuit

(relay de-energised)

The exception to the rule above is when the output is

configured to signal ONLY high battery voltage, in which

case relay operation is:

Charger conditions

Pin 5 relay output state

Normal operation, no faults

Open circuit

(relay de-energised)

High battery voltage fault

+ DC

(relay energised)

See software tool document ci0052 for full information on

programmable alarm output options.

Input –optional charger control

Input pin 7 is activated by connection to battery negative

DC (e.g. connection to pin 6 via external relay/switch

contacts).

The input can be used for optional control of several

charger functions, depending on the application and

levels of control needed. Programmable input functions

include:

return to float mode

ramp to boost

boost extension

perform battery check

reduce to nominal voltage

turn output off

For full details of all programmable input functions, please

refer to SNTL150P-PCSUITE installation manual,

document reference ci0052.

Electrical Connection & Configuration (cont.)

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AC Input (power supply)

DANGER!

HIGHVOLTS

Before AC connection, disconnection or

fuse replacement:

Isolate the AC supply

Ensure a good ground/earth connection

to the charger (CN3 screw terminal).

Ensure the AC supply voltage is

compatible with the charger’s supply

rating. Exceeding the rated voltage

may result in damage to the charger

and connected equipment, and cause

serious personal injury.

Fit external supply fuses in accordance

with the charger's labelled types/ratings.

WARNING: Sentinel should be fused

separately from other equipment.

This will prevent Sentinel being isolated,

and ensure batteries remain on charge,

in the event that other equipment fails.

Connect the AC input supply (live, neutral and ground)

wires to Sentinel connector CN3:

CN3

Function

AC supply live, 95 to 265 VAC, 47 to 63 Hz

AC supply neutral

AC supply ground/earth

AC supply and ground connections require 1mm²/17

AWG or larger wire conductors, rated for temperature

90°C/194°F. The AC live wiring must incorporate fuse

ratings/types as indicated on the charger labelling.

Sentinel –PC connection

SNTL150P-PCCON configuration software kit

To allow the full range of programmable functions and

options, Sentinel must be connected to a Windows®-

based PC or laptop running Computronic SNTL150P-

PCSUITE software.

Configuration kit model SNTL150P-PCCON provides all

the necessary hardware for communication between PC

and Sentinel 150P charger.

The kit includes a communication lead with a 7-way pin

header, which connects to the Sentinel 150P circuit

board. Sentinel back view:

7 way pin header H1

Connection:

Ensure correct polarity when mating with USB to

Serial TTL converter cable (as supplied with 42.70.3825):

Electrical Connection & Configuration (cont.)

Typical Connection

Notes:

1) External AC fusing (F1):

see AC Input (power supply) section

2) DC self-resetting fuse (F2):

see DC Output section

3) Battery output is isolated from chassis.

4) Alarm output relay shown in de-energised

state. Output function is configurable.

5) Input (pin 7) shown with momentary

action switch. Input function is software

configurable.

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ci0050 p7/8 issue 5 2014-08-26

Operation

LED indication

3 LEDs, positioned in the middle of the Sentinel's protective

cover (with the product label), provide user indication of AC

power, DC charge and fault conditions:

LED

colour

LED

state

charger condition

blue

AC power condition:

solid on

AC power on

green

DC output and charge condition:

solid on

Float charging

slow flash

Ramp to Boost (bulk charge)

fast flash

Boost extension (absorption charge)

solid off

battery check/missing, with output

programmed to be off

red

Faults/warnings:

solid on

AC mains fail and/or charge fail

slow flash

DC connection error

fast flash

High volts alarm, low volts alarm, RTC

sensor short or battery missing

solid off

No fault detected

On models with a programmable input, an active input is

indicated by rapid flashing green and red LEDs.

Initial Power-Up –Commissioning Charge

When powered up for the first time, with both AC and DC

connected, the Sentinel 150P performs an AutoBoost charge

with the boost extension timer is set to 6 hours (regardless

of the profile configuration). This ensures the connected

batteries receive a full commissioning charge.

After completion of this commissioning charge, Sentinel's

boost extension time reverts to the profile's set level (factory

default time is 2 hours).

Float charge operation

Sentinel operates an intelligent, multi-stage battery charge

regime. In normal charging mode, the charger maintains

the battery at a pre-calibrated float voltage (see page 3 -

DC Output Calibration table), while supplying any additional

DC load up to the specified current limit. The Sentinel 150P

has a maximum default current limit of 5A, but the software

configurator allows this to be reduced if required.

When fully charged, a battery will only accept the charge

required to replace internal losses (approx. 1mA per AH of

battery). E.g. for a system with a 1 Amp standing load and a

fully charged 50 AH lead acid battery, Sentinel will typically

supply 1.05 Amps.

AutoBoost operation

AutoBoost mode provides a temporary increase in output

voltage. It may be initiated:

automatically on battery low voltage (programmable level,

factory default 12.0V / 24.0V)

automatically on expiry of a time interval since the last

AutoBoost (programmable level, factory default 28 days)

by an operator-controlled, panel-mounted momentary

push switch, if the Sentinel has a switch input configured

for "AutoBoost initiate".

Sentinel charges the batteries in AutoBoost mode for a

preset time (also programmable), after which it automatically

returns to float mode.

AutoBoost provides charge equalisation between cells,

without overcharge, maximising battery capacity, power and

service life.

Battery check

As part of its diagnostic process, Sentinel can periodically

check for a 'battery missing' condition by reducing its charge

output and measuring battery voltage.

Sentinel performs a Battery Check:

at power up

at the end of an AutoBoost cycle

periodically, while in float mode (programmable time,

default is every 60 minutes)

On detection of a battery missing fault (voltage below a

programmed threshold, factory default 12V), Sentinel

can be configured to operate the alarm output and/or

maintain/reduce the charge output. It will also carry out

further battery checks every minute until the fault clears.

Time/voltage parameters and responses can be changed

or disabled using the software configurator tool.

The Battery Check feature does not operate during

AutoBoost cycles, and a battery missing condition will inhibit

initialisation of AutoBoost.

Fault Finding, Warranty and Maintenance

Warranty and servicing

Sentinel chargers are supplied with a 2 year warranty on parts

and workmanship.

Maintenance is limited to keeping the charger free from

ingress of dust, dirt or moisture, and ensuring clear air-flow for

ventilation.

In the event of an operating query or suspected fault, please

consult the sections in this manual, including the trouble-

shooting flowchart on page 8, or contact your supplier for

further advice before returning the charger.

WARNING: Sentinel battery chargers and

internal components are not user-serviceable.

No attempt should be made to repair the

charger. Any attempt to do so may invalidate

warranties, cause permanent damage to the

charger and connected equipment, and result

in serious personal injury.

Sentinel 150P installation, operation & maintenance

ci0050 p8/8 issue 5 2014-08-26

Fault Finding, Warranty and Maintenance

Troubleshooting Flowchart:

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