Murphy AS730 User Manual

AUTOSTART 730 (AS730 series)

The Generator Controls Division of

R

(MS5261)

gen. frequency measurement range

PROGRAMMABLE GENERATOR CONTROLLER

The Autostart 730 provides for the fully automatic or manual
control of a standby generator. The unit has similar control
and instrumentation features to the Autostart 710, but with
the addition of 3 phase generator voltage and current
measurement, display and fault tripping.

Key features

• Automatic, Manual and Program modes, selected by

front facia push button keys

• 32 character, back-lit liquid crystal display (LCD)

• Fully programmable generator control options, timers,

inputs, outputs and fault protections

• Monitoring, display and programmable fault trips for

generator speed/frequency, 3 phase voltage and 3
phase current with IDMT response.

• Comprehensive automatic fault protection system:–

up to 5 programmable fault inputs, overspeed, charge
fail, emergency stop, and high and low battery volts

• 6 programmable outputs, each with over 40 different

function (or ‘action’) types.

Operation

Control of the Autostart is via 4 front facia keys:­ON/MODE Turns on the Autostart and allows selection

of Auto or Manual modes.

PAGE Used to scroll through measured generator

parameters, such as 3 phase voltage
and current, engine oil pressure and
temperature, hours run and battery voltage.

SELECT Used in the programming of Autostart
OFF Turns the Autostart off, disabling the

generator and resetting any fault condition.

These keys are also labelled with
used in the programming of each Autostart (see overleaf).
Two front facia LEDs indicate the selected operating mode:
green for Auto, amber for Manual.

Control Outputs

Dedicated relay outputs are used for engine fuel and starter
motor control. The AS730 has 6 programmable outputs,
each of which may be set up for use as one of over 40
function types, e.g. preheat (4 types), engine running,
individual faults (e.g. overspeed, overcurrent, start fail,
oil pressure, etc.), energised to stop fuel, etc.

Fault Protection and Alarm System

The Autostart 730 has a comprehensive fault detection,
warning and automatic response system:-

• Dedicated inputs for low oil pressure and high engine
temperature sensors, either switch or analogue type.
The use of analogue sensors allows for pre-warning as
well as shutdown alarms, and real-time display of oil
pressure and engine temperature.

• Three programmable inputs for use with remote fault
switches. The inputs can be set to give a warning only,
generator load release or shutdown response.

• User set trip levels and response for generator speed/
frequency, 3 phase voltage and 3 phase current.

symbols,

Issue 4, revised 06/99

M011001

Catalogue section 75

Product Specification

Power supply:

Operating voltage: steady state range
crank brown-out
Current consumption typically 200 mA

Inputs:

DC inputs:-

positive input defined as: 80% to 100% of battery +ve
negative input defined as: –1V to +2V w.r.t. battery –ve

Input 1 (oil pressure) and
Input 2 (engine temperature)

Inputs 3 - 5 switch (open or closed),

Generator AC inputs:-

operating voltage range 90 – 300 V AC rms L–N
gen. frequency display accuracy <= 2% of full scale

gen. frequency display resolution 1 Hz.

Magnetic pickup:

operating voltage range 7 – 80 V AC rms
frequency measurement range 0 – 10 kHz.
generator RPM display accuracy <= 2% of full scale
generator RPM display resolution 10 RPM

AC current sensing inputs:

operating range designed for use with 5 Amp CT's

Outputs: (all ratings for resistive load)

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

(default setting: Common Alarm)
Programmable output 6
(default setting: Gen. Contactor)

Physical:

Overall dimensions (W x H x D) 144 x 96 x 162 mm
Panel cut-out size (W x H) DIN standard 140 x 92 mm
Weight approx. 720 g
Operating ambient temperature –10 to +55 oC

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 0 V for >=100mS

switch (open or closed) or analogue

(Murphy, Datcon, VDO 5 or 7 bar),

wired to –ve DC

wired to +ve or –ve DC

0 – 99 Hz.

primary ratings 10 to 5000 Amps

rated 16 A max. @ 24 V DC

250 mA max. @ 33 V DC

5 A max. @ 24 V DC

+ ve DC (switched relay)

5 A max. @ 24 V DC

volt free SPNO relay

5 A max. @ 240 V AC

• Additional fault alarms:-

+ ve DC power supply

+ ve DC (relays)/Emerg. stop

Communications Port

–ve DC

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

Warnings: low and high battery voltage, charge fail

and magnetic pickup fault

Shutdowns: emergency stop, start fail and system fail.

Programmable functions

The AS730 has all the programmable functions found on the
Autostart 710 – timers, alarm configurations, trip levels and
programmable inputs/outputs – plus the following:-

• Generator under voltage trip, under voltage reset,

over voltage trip levels.

• Generator full load current, IDMT response constant

and instant trip level.

The Autostart may be programmed by use of the front facia
keys: to prevent end-user tampering, entry to program mode
is restricted by use of a code number.

The addition of a small RS232 interface allows the AS730 to
be connected to a remote (IBM compatible) computer, either
directly or over a modem link; Murphy Modex communication
software allows a PC operator to program, monitor and
control the Autostart from a remote location.

When ordering, please specify:-

a) Unit type (Autostart 730S)

Accessories:-

AS7CA 9 way (interface) to 9 way (PC) comms lead
AS7CB 9 way (interface) to 25 way (PC) comms lead
AS7CC Local communications interface
AS7CD Modem communications interface
AS7CK AS7xx communication and programming software

Rear Facia & Electrical Connection

Generator

L1

70

L2
L3

0 - 300 VAC

N

Line - Neutral
L1
L1 return
L2
L2 return
L3
L3 return

voltage

Generator

current

0 - 5 Amp

CT's

5 – 40 VDC

– ve DC
< 250 mA

70
71
72
73
74
75
76
77
78
79

16

Input 1: low oil pressure

17

Input 2: high engine temp.

18

Input 3: programmable

19

Input 4: programmable

20

Input 5: programmable

Index Pin21

22

Fuel output

23

Starter output

24

Output 5 (alarm): + ve, < 5A

25

NO

26

CO

27

Man. Start

28
29

Live

30

Neutral

71
72
73
74
75
76
77
78
79

1

–ve DC supply

2

Charge fail input
3
4
5

Magnetic pickup input
6

Output 1
7

Output 2
8

A800 enable output
9

Output 3: – ve, < 250mA

10

Output 4: – ve DC, < 5 A

11

Remote start/mains fail input

12

- No connection -

13

- No connection -

14

- No connection -

15

- No connection -

10
11
12
13
14
15

1
2
3
4
5
6
7
8
9

16
17
18
19
20

21

22
23
24
25
26
27
28
29
30

+ ve DC
< 16 A

Output 6 (gen. contctr)
volt free, < 5 A

Man. Stop

– ve

Generator AC
300 VAC max.

Typical Connection

M

L1

A

L2

I

L3

N

N

S

L1

UVR500

1 2 3 4 5 6

+ve DC

fuse

+

WL

A

–

magnetic

pickup

Autostart

5A

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15

L1

LOAD

L2

730

generator

L3

N

contactor

70
71
72
73
74
75
76
77
78
79

16
17
18
19
20

21

22
23
24
25
26
27
28
29
30

GCR1

1A

1A

MCCB

GCR

1A

HET

inputs

RFL

start

manual

stop

manual

RST

RAL

fuel

starter

alarm

IP3

IP4

IP5

LOP

G

L1

E

L2

N

L3

E

N

R
A
T
O
R

mains

contactor

L2

L3

N

MCR

RPO1

RPO2

RPO3

RPO4

MCR1

Emergency

Stop

Incorporating Modex Automation

Church Road, Laverstock, Salisbury U.K.

Since 1939

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