Computronic Controls Sentinel 300P User Manual

ci0039 issue 9, 2015-09-04

Sentinel 300P series

Automatic switch mode battery chargers

Installation, Operation & Maintenance

This manual refers to the following models

		All models are UL recognised or listed
Open frame	SNTL300P	Base open-frame (protective cover) model.
models	SNTL300PC	As above, plus CAN J1939 communication.
Enclosed	ESNTL300PM	Enclosed model, analogue meters.
models	ESNTL300PCL	Enclosed model, CAN J1939 communications
		and LCD display
	ESNTL300PCLM	Enclosed model, CAN J1939 communications,
		LCD display and analogue meters.

For safe and correct use of these chargers, read and save the safety information that precedes the installation and operation instructions.

This guide contains 12 pages (including this one). If any pages are missing, contact the battery charger supplier or manufacturer for replacement documentation.

Sentinel 300P (open-frame, with protective cover)		Enclosed Sentinel 300P
SNTL300P model shown		ESNTL300PCLM model shown
		For sales & support, contact:
		ENOVATION CONTROLS LTD.		ENOVATION CONTROLS
		Church Road, Laverstock,		5311 S 122nd East Avenue,
		Salisbury, SP1 1QZ, United Kingdom		Tulsa, OK 74146, USA
		Phone: [phone]		Phone: [phone]
		Fax: [phone]		Fax: [phone]
		E-mail: [e-mail]		E-mail: [e-mail]
		Web: www.computroniccontrols.com		[e-mail]
		www.fwmurphy.eu/computronic		Web: www.fwmurphy.com

Important Safety Information – Read and Save These Instructions

This manual contains important safety and operating instructions for all SNTL300P and ESNTL300P 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, injury to persons or damage to property.

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 HIGH POWER BATTERY IS DANGEROUS. BATTERIES MAY GENERATE EXPLOSIVE GASES DURING NORMAL OPERATION AND CHARGING.

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 or high power 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 or chemicals contact skin or clothing, wash immediately with soap and water. If acid or chemicals enter the 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 severe burns.

(viii) Use the charger only for charging battery types as stated on the charger. Do not use the charger for charging drycell batteries that are commonly used with home appliances. These batteries may burst and cause injury to persons and damage to property.

(ix) NEVER CHARGE A FROZEN BATTERY

PRIOR TO INSTALLATION /COMMISSIONING

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

For lead acid batteries, add distilled water in each cell until the battery acid reaches a level specified by the 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 battery voltage by referring to the engine manual and ensure this matches the charger’s output voltage.

CHARGER LOCATION AND CONNECTION

Never place the charger directly above the battery being charged: battery gases will corrode and damage the charger.

When reading specific gravity or filling batteries, never allow battery acid or chemicals to drip on to the charger.

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 supply and ground connections, use 1mm²/17 AWG or larger wire conductors rated to 90°C/194°F. For DC (charger to battery) leads, use 4mm²/11 AWG or larger wire.

For safe and correct use of the charger, follow steps below. 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 ventilation and 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, number of cells 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.

Sentinel 300P installation, operation & maintenance

ci0039 p2/12 issue 9 2015-09-04

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.

WARNING

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

Sentinel 300P battery chargers provide new levels of DC power control, monitoring and protection for standby battery and engine starting 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 charge levels, or manually by remote switch, AutoBoost temporarily increases the charge voltage before returning to float mode. AutoBoost equalises battery cell charge, maximising battery capacity and life, without overcharge and gassing.

Specifications

Power supply

Operating voltage: 95 – 250 V AC

Operating frequency: 47 – 63 Hz.

DC Charge Output

Nominal voltage: programmable 12 or 24 V DC

Float/boost voltage: programmable, see ‘DC output calibration’ table

Maximum current limit: 10 A Voltage ripple: <1%

Line regulation: <2% Load regulation: <2%

Outputs x3 (optional x4 on non-CAN models):

All models:

1 x SPDT (RL1), 1 x SPNC (RL2), 1 x SPNO (RL3), dry/volt-free contacts (common feed for RL1, RL2 & RL3)

Standard models (non-CAN configurations):

1 x SPNC (RL4), dry/volt-free contacts

standard model output functions are compliant with NFPA 110 Rating (all relays): 1A max @ 30 VDC (resistive load), UL class 2

Inputs x2

Closed to negative DC to activate

Physical

Operating temperature: –40 to +60°C / –40 to +140°F

Display viewability (LCD models only): 0 to 50°C / 32 to 122°F Humidity: 20% to 90% RH

Dimensions: see Dimensions and Assembly section Weights: see Dimensions and Assembly section

Electrical safety: 2006/95/EC

Electromagnetic compatibility:

2004/108/EC, EN 55022 class B (EN 61000-6-1, EN 61000-6-3)

UL approvals

All (E)SNTL300P models:

BBGQ: UL1236, CSA 22.2 no. 107.2 BBHH: UL1236 SE

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.

In addition, the Sentinel 300P also provides:

Flexible configuration: microprocessor programmability for automatic or manual configuration of output voltages (12 or 24V nominal), cell types/numbers and charging applications – all in one standard model. Programming is by circuit board links and/or PC software configuration and monitoring tool.

Inputs & outputs: for remote charger control, and signalling of charge fail, high/low battery volts and mains fail faults. Standard model outputs comply with the NFPA 110 standard. Non-standard input/output functions available to special order.

Display, instrumentation and communication: options are available for LCD readout, analogue amp/volt metering and CAN SAE J1939 communication. All models include RS485 communication for configuration and control.

The Sentinel 300P is available either as an open-frame (UL-recognized) module for mounting in existing control panels, or as a wall-mounted (UL-listed) stainless steel enclosure with LCD and analogue metering options.

Electrical connection is by circuit board mounted screw terminal blocks. On enclosed models, wiring harness access is by knock-out cable gland holes in the case side.

DC output calibration

		float volts	boost volts
Battery type:		(V DC)	(V DC)
12V	Wet (vented) lead acid, 6 cells	13.5	14.1
	Calcium-Calcium, 6 cells	13.8	15.6
	Lead acid hybrid Sb-Ca, 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
24V	Wet (vented) Lead acid, 12 cells	27.0	28.2
	Calcium-Calcium, 12 cells	27.6	31.2
	Lead acid hybrid Sb-Ca, 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

Note: Calibration figures at 20 deg C. Output voltage will vary if temperature compensation is enabled – see Electrical Connection & Configuration section.

Sentinel 300P installation, operation & maintenance

ci0039 p3/12 issue 9 2015-09-04

Dimensions and Assembly

CAUTION: Sentinel 300P chargers should be handled by the circuit board cover (SNTL models) or steel enclosure (ESNTL models). Care should be taken not to handle static sensitive components through exposed circuit boards and terminals.

SNTL300P models

Overall:
W		158 mm / 6.22 in.
H		208 mm / 8.19 in.
D		84 mm / 3.31 in.
Fixing holes:
X		150 mm / 5.91 in.
Y		150 mm / 5.91 in.
Weight:
		1.1 kg / 2.5 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 lowermost.

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 slots (Ø 6mm/0.24in.) or 4 corner slots (Ø 6mm/0.24in.). 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.

Optional clip for DIN rail mounting (2 required for each charger), part number 045-0001.

ESNTL300P models

Overall:

W		165mm / 6.50 in.
H1		300 mm / 11.81 in.
H2		80 mm / 3.15 in.
D1		125 mm / 4.92 in.
D2		130 mm / 5.12 in.
Fixing holes:
X		63.5 mm / 2.50 in.
Y		285.5 mm / 11.25 in.

Weight:

2.0– 2.1 kg / 4.4 – 4.6 lb

These chargers are designed for wall or frame mounting in the orientation shown above, with enclosure air vents uppermost. For safe heat dissipation, allow 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.

Mounting is via the enclosure back-plate, using 4 holes/slots (Ø 6mm/0.24in.) on the upper and lower edges. Ensure that the

mounting studs/bolts/nuts/ screws adequately support the charger weight, and are tightened sufficiently to not to become loose during normal use, e.g. due to engine/equipment vibration.

Access to the electrical connection terminals is via a hinged lower front plate. Remove the 2 x securing screws (marked S above), and then rotate the hinged section through 90 degrees.

Electrical cable harness entry is via knock-out ports on either side of the enclosure, which must be carefully removed from the enclosure sides. A suitable cable-gland (20mm/0.8in. diam.) must be used to prevent damage to cables and stop unwanted entry into the inner part of charger. Wiring for DC charge output (connector CN1),

DC control (CN2) and AC supply input (CN3) must be physically separate, e.g. using separate wire harnesses and case access ports: see page 5 section Wire Harness Separation.

Connect the charger wiring as detailed in the following Electrical Connection section. When wiring is complete, and before using the charger, re-secure the hinged front section using the 2 fixing screws.

Sentinel 300P installation, operation & maintenance

ci0039 p4/12 issue 9 2015-09-04