Murphy AS705S User Manual

AUTOSTART 705 (AS705S series)

The Generator Controls Division of

R

PROGRAMMABLE GENERATOR CONTROLLER

The Autostart 705 provides the control features for the
automatic or manual starting, load transfer and shutdown of
a standby diesel generator or pump. The AS705 is a micro­processor based controller, giving full programmability of
timers, trip levels and control options, with front facia LEDs
for the indication of generator status and faults.

Key features

• Automatic or manual operation, selected by rotary switch

(key-switch available as an option).

• 17 LED status and fault indicators, including 5 LEDs

for custom programming and labelling

• RS232 communications link for engine monitoring,

control and Autostart programming from local PC

• Comprehensive fault protection and alarm system:–

low oil pressure, high engine temperature, overspeed,
underspeed, charge fail, emergency stop, start fail, high
and low battery voltage, 3 programmable fault inputs.

• 6 programmable outputs, allowing remote signalling

and control of over 30 different functions.

• Pin compatibility with Autostart 710 and Keystart 9700

ranges, allowing standardisation of panel wiring.

• 96 x 96mm DIN standard, front panel mounted case

Operation

Autostart’s operating mode is selected by use of its
3 position front facia switch:–

Off/reset. Disables the engine and resets a
latched fault condition.

Automatic start-up, load transfer and return to
standby in response to a mains fail or remote
start condition, with full fault protection.

Manual start and stop of the generator, either
immediately on selecting manual mode or by
use of remote push button switches.

Green and amber LEDs around the switch indicate the
selection of Auto and Manual modes. On keyswitch
versions, the key is common to all units and may be
removed in the Off and Auto positions only.

Control Outputs

The following are provided:-

• Single pole, switched +ve relay outputs for the control

of engine fuel and starter motor circuits.

• Switched +ve outputs for signalling auto and manual

modes, plus a –ve DC output for Off/reset.

• 6 function programmable outputs (see overleaf).

Fault Protection and Alarm System

In Auto or Manual modes, Autostart will shut down and latch
out the generator on detection of low oil pressure, high
engine temperature, overspeed, start fail or emergency
stop faults. The Autostart may also be set up to shut down
the generator on low generator frequency or speed.

3 additional inputs may be used with remote fault switches
(giving a ‘shutdown’ or ‘warning’ response), or as control
inputs with remote contacts or panel switches (see overleaf).

Non-latching, 'warning only' alarms are fitted for high and
low battery volts, charge fail and mag. pickup fail conditions.

Issue 6, revised 06/99

M011101

Catalogue section 75

(MS5258)

Product Specification

Power supply:

Operating voltage: steady state range
crank brown-out
Current consumption typically 150 mA

Inputs:

DC inputs (inputs 1 - 5, remote start)

positive input voltage range 80% to 100% of battery +ve
negative input voltage range –1V to +2V w.r.t. battery –ve

Generator AC input:-

operating voltage range 90 – 300 V AC rms
frequency measurement range 0 – 99 Hz.

Magnetic pickup:-

operating voltage range 7 – 80 V AC rms
frequency measurement range 0 to 10 kHz

Outputs: (all ratings for resistive load)

Start and fuel relays + ve DC (switched SPNO contact)
Programmable outputs 1 – 3 – ve DC (open collector transistor)
Programmable output 4 – ve DC (switched SPNO contact)
Programmable output 5

(default setting: Common Alarm)
Programmable output 6
(default setting: Gen. contactor)
Auto & Manual outputs + ve DC, 250mA max.
Off/reset output – ve DC, 250mA max.

Physical:

Overall dimensions (W x H x D) 96 x 96 x 162 mm
Panel cut-out size DIN standard 92 x 92 mm
Weight approx. 650 g
Operating ambient temperature –10 to +55 oC
Case sealing IP22

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.

5 – 40 V DC continuous

to 0V for <= 100 mSec

rated 16A max. @ 24V DC

rated 250mA max. @ 33 VDC

rated 5A max. @ 24V DC

+ ve DC (switched SPNO contact)

rated 5A max. @ 24V DC

volt free SPNO contacts

rated 5A max. @ 240V AC

Programmable functions

16

17

18

19

20

22

23

24

25

26

27

28

29

30

21 Index Pin

– ve DC supply

Charge fail input

+ ve DC power supply

+ ve DC (relays)/Emerg. stop

A800 enable (engine running)

Output 3: –ve, < 250mA

Output 5 (alarm): +ve, 5A max.

250mA max.

MODEX

Frank W. Murphy Manufacturer
Frank W. Murphy Southern Division

Frank W. Murphy Ltd.

Macquarrie Corporation

email: [e-mail]

Murphy Switch of California

Murphy de Mexico S.A. de C.V.

Frank W. Murphy Pte, Ltd.
Frank W. Murphy Ltd. en France

The Autostart 705 has over 40 programmable functions:-

Timers:-

Start delay; preheat, crank and crank cool (dwell) times;
fault override time; warm-up delay, mains restore delay;
engine cool (run on, off load) time, speed signal delay.

Inputs:-

Inputs 1 and 2 are dedicated for use with low oil pressure
and high engine temperature switch sensors. Inputs 3, 4
and 5 may be programmed for a range of uses, including
shutdown or warning faults, lamp test, manual restore (of
mains), test off load, alarm mute, etc. The inputs may be
set up to work with remote contacts which either open or
close when active, with wiring to either +ve or –ve DC.

Outputs:-

6 programmable outputs, each of which may be set to
give one of over 30 signalling or control ‘actions’,
including: Preheat (4 types), Energised to Stop Fuel,
Louvre Control, Generator Available, Common Alarm,
Alarm (muteable), Shutdown Fault, Warning Fault,
Overspeed, Start Fail, individual input faults (1 - 5), etc.

LED indicators:-

5 programmable LED indicators, each of which may be
set to display extra status information (e.g. ‘generator on
load’, ‘fuel on’) or specific faults which are not indicated by
the dedicated LEDs (e.g. low/high/faulty battery voltage,
low generator volts, magnetic pickup failure, etc.).

Next to the 5 LEDs is a windowed 'pocket' in the front
label, into which a custom message label may be inserted.
A sheet of typical fault and status messages
is supplied with each unit.

Other System parameters:-

Crank release (by engine RPM, generator Hz. or charge
alternator WL voltage), underspeed and overspeed trip
levels (Hz. or RPM); maximum number of start attempts;
high and low battery voltage warning levels; enable or
disable loading of generator in manual mode.

Each Autostart is programmed by use of Murphy-Modex
communication software running on an IBM compatible PC
or lap-top. The computer is connected to the Autostart
through a small interface unit and serial lead. Autostart
program ‘profiles’ may be created, edited or saved on the
computer’s hard disk, up-loaded from or down-loaded to
any number of Autostarts, quickly and error-free.

The software also has a real-time monitoring feature,
allowing the PC to display data such as operating mode,
engine running status, speed/ frequency, hours run, fault
conditions, battery voltage, input/output status, etc.

Front Facia

10 pre-set status
and fault LEDs

5 programmable
status LEDs
(2 amber, 3 red)

3 position operating
mode switch:-

Off/reset
Auto
Manual

START DEMAND
ENGINE RUNNING
START FAIL
LOW OIL PRESSURE
HIGH ENGINE TEMP
OVERSPEED
UNDERSPEED
CHARGE FAIL
PLANT FAIL
EMERGENCY STOP

Rear Facia & Electrical Connection

1

5 – 40 VDC

2
3
4

Magnetic pickup input

5

Output 1

6

Output 2

7

– ve DC

8

Input 1: low oil pressure
Input 2: high engine temp.
Input 3: programmable
Input 4: programmable
Input 5: programmable

Fuel output
Starter output

+ ve DC
16A max.

9

Output 4: –ve DC, 5A max.

10
11

Remote start/mains fail input

12

-

No connection -

13

Off output: – ve DC, < 250mA

14

Manual output

15

Auto output

+ ve DC
250mA max.

NO

Output 6 (gen. contactor)

CO

Live
Neutral

volt free, 5A max.

Man. Start

Man. Stop

Generator AC
300 VAC max.

– ve

For a typical connection circuit, please see Autostart 710
data sheet (the Autostart 705 and 710 are pin compatible).

When ordering, please specify:-

Switch option:-

K = keyswitch
R = rotary (knob) switch

Generator AC voltage:-

Accessories:-

AS7CA 9 way (interface) to 9 way (PC) comms lead
AS7CB 9 way (interface) to 25 way (PC) comms lead
AS7CC interface for local RS232 communications
AS7CK AS7xx communication and programming software

D = 230 VAC
C = 110 VAC

AS705S

Incorporating Modex Automation

Church Road, Laverstock, Salisbury U.K.

Since 1939

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