DEEP SEA ELECTRONICS PLC

704Auto Ma ins

F a i l u r e

The 704 is an Automatic Mains Failuremodule with generator monitoring,protection and start facilities. It utilisesadvanced surface mount constructiontechniques to provide a compact yethighly specified module.

Operation of the module is via threepushbuttons mounted on the front panelwith STOP, MANUAL and AUTOpositions. Selection of the ‘Auto’ mode isconfirmed by LED indicator, and monitorsthe incoming mains supply (3 phase orsingle phase). Should the incoming ACmains supply fall below a configurablepre-set limit (180V default), the generatorwill be started, and load transferred to thegen-set.

When the AC mains supply returns towithin limits, the module will wait for aconfigurable, pre-set stabilisation period,and then transfer load back to the mains.The engine will be instructed to stop aftera cool-down period.

The module’s microprocessor provides acomprehensive list of timers andfunctions, and access to the settings isvia a small Configuration Switch on therear of the module. Parameter settingscan be adjusted using the front panelpushbuttons once in Configuration Mode.

The module monitors the engine andprovides the following functions:

Ø Automatic Start with 3 start attemptsand Automatic Crank Disconnect -with adjustable Start and StopTimers and Fail to Start indication.

Ø Configurable Pre-heat and Energiseto Stop functions.

Ø Low Oil Pressure and High EngineTemperature Shutdown.

Ø Overspeed and Underspeed(frequency) protection.

Ø Charge Fail alarmØ Two fully configurable auxiliary

inputs.Ø Adjustable Warming and cooling

timersØ Adjustable Mains Fail voltage levelØ Change-over contactor control.

All alarms are indicated by high visibilityred LED’s.

Issues such as environmental complianceand EMC have been carefully engineeredinto the design. Advanced features suchas Protected Solid State Outputs meanthat there are no moving parts or contactsto burn out.

OPERATION

Stop mode - This is used to stop theengine when it is running and to cancel‘Auto’ mode. It is also used to reset anyShutdown alarm conditions.

Manual mode - This is used to manuallystart and run the engine. It can be stoppedby pressing the Stop button.

Auto mode - This selects the automaticmode of operation, in which the module willawait a mains failure. Once detected, themodule will initiate its pre-configured startsequence, observing the Start Delay Timerbefore starting the engine. When themains supply returns, the module willinitiate its pre-configured stoppingsequence.

FEATURES

Ø Micro-processor based designØ Automatic Engine Starting and

StoppingØ Automatic Shutdown on Fault

ConditionØ Configurable via front panelØ Simple pushbutton controlled

operationØ Configurable Digital InputsØ Configurable Solid State OutputsØ Configurable Timer SettingsØ Solid State Fuel and Crank OutputsØ External Remote Start InputØ LED Alarm indicationØ Start/Stop Delay TimerØ Warm-up/Cooling TimerØ Energise to Stop TimerØ Single/Three phase mains sensingØ Load contactor control Solid State

OutputsØ Pre-heat TimerØ Over Speed ShutdownØ Optional Underspeed ProtectionØ Low Oil Pressure ShutdownØ High Engine Temp ShutdownØ Optional Crank Disconnect from Oil

Pressure

DESCRIPT ION

SPECIF ICATION

DC Supply:8 to 35 V Continuous.Cranking Dropouts:Able to survive 0 V for 50 mS,providing supply was at least 10 Vbefore dropout and supply recoversto 5V. This is achieved without theneed for internal batteries.Max. Current:Operating 50mAStandby 10mAAlternator Input Range:75(ph-N) to 277(ph-N) 3 Phase4wire AC (+20%)Alternator Input Frequency:50 - 60 Hz at rated engine speed(Minimum: 75V AC Ph-N) (CrankDisconnect from 15V Ph-N @ 20Hz)Overspeed +14% (+24% overshoot)Underspeed –20%Start Output:1.2 Amp DC at supply voltage.Fuel Output:1.2 Amp DC at supply voltage.Auxiliary Outputs:1.2 Amp DC at supply voltage.Dimensions:125 X 165 X 28 mmCharge Fail:12V = 8V CF 24V = 16V CFOperating Temperature Range:-30 to + 700C

Ø Compliant with BS EN 60950Low Voltage Directive

Ø Compliant with BS EN 50081-2EMC Directive

Ø Compliant with BS EN 50082-2EMC Directive

Deep Sea Electronics plc reserve the right to changespecification without notice.

Issue 7VH 28/08/02

The 700 series modules have beendesigned for front panel mounting.The module is fitted into the cut-out,and screw holes are provided forsecure fixing.

CONFIGURATION

Configuration Mode is selected by operation of a small switch on the rear, left-hand edge of the PCB. This is partially hidden toprevent accidental operation. See figs 1 and 2

Fig. 2 Reverse of 704

Fig. 1

Normal

Configuration

Fig. 3 Dimensions (mm)

Once Configuration Mode is selected, the ‘Auto’ LED will commence rapid flashing. When inConfiguration Mode all normal operation is suspended.The ‘Stop’ pushbutton can be used to select the LED ‘code’ that corresponds to the requiredfunction. The 5 left hand LED’s will form the code.The ‘Manual’ pushbutton will allow the user to change the function parameters. The 3 right-handLED’s inform the user of the current setting for the chosen function.When the required parameters are displayed, pressing the ‘Auto’ button will save thenew setting. The process is repeated for each function change.When configuration is complete, the Configuration Mode Selector Switch should be returned to the‘Normal’ position. A key to configuration options is provided with the Installation Instructions supplied with module.

F 2A

SSOSSOSSOSSO

SSO = Solid state outputs

= External 'Automotive' or 'Plug-in' type relays

41 2 3 5 6 7

2021

Auxiliary Outputs

++

8 9 10 11 12

Auxiliary Alarm Inputs

+

Battery

F2A F

Crank

Fuel Startermotor

Chargealt

+ +

Fuel output Start output

N

L1

L2

L3Alternator Output

Load

Mechanical Interlock

N

L1

L2

L3Mains / Utility supply

14SSO

Close Gen output

+

G M

Electrical Interlock

13SSO

Close mains output

FUSES 2A

Oil

Pre

ssur

e

Eng

ine

tem

pera

ture

Rem

ote

Sta

rt

Normally closedNormally open

16 17 18 19

Close mains relayClose gen relay +

*NOTE

* Close mains relay must be normally closedto ensure fail safe operation

15

Typical Connections

Deep Sea E lec t ron i cs p l cHighfield House, Hunmanby Industrial Estate, North Yorkshire, YO14 0PH, EnglandTel: +44 (0) 1723 890099 Fax: +44 (0) 1723 893303 E-mail sales@deepseaplc.com