Murphy Selectronic Micro-Controller 1500 Specifications

S15-95063B

®

FRANK W.

MFR.

DISCONTINUED

Effective 10-95

Catalog Section 50

(00-02-0119)

SELECTRONIC®Micro-Controller

Series 1500

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Alarm/Shutdown for 32 N.O. and/or N.C. Sensors

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Operating Sequence Selection

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Completely Field Adjustable

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Selectable Sensor Lockouts Class A, B, C or P

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Built-In Tachometer/Overspeed Function

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Clearly Visible Alphanumeric Display

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RS232 Communications Capability

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Two Start/Run Timers

®

Description

The Series 1500 is a microprocessor based alarm
and/or shutdown system. It tells in alphanumeric
characters which protective device has signaled an
alarm or caused equipment shutdown. Basic config­uration for each application is programmed at
Murphy and can be configured in the field.
Information is called up and adjustments are made
on a six-button keypad on the face of the unit.

The S1500 system consists of a monitor, a sensor
input terminal strip (rail mount type), a 36 inch
(914 mm) flat ribbon cable for connecting the ter­minal strip to the monitor, and a power supply
which includes the control Inputs/Outputs and
intrinsically safe barrier with cable assembly.

Four SPDT relays are available for alarm and/or
shutdown functions. A built-in RS232 communica­tion port allows interfacing with IBM
patible computer systems and micro-controllers.

The S1500 is powered from a 120 VAC or 12 or
24 VDC, Class I, Division 1 explosion-proof power
supply. The monitor is rated intrinsically safe.

®

PC and com-

Intrinsically Safe Barrier

Murphy’s LCDT-ISB intrinsically safe barrier for
hazardous applications, is designed for use with
two Normally Open sensors. This external barrier
accepts non-intrinsically safe, normally open inputs
and converts them to intrinsically safe outputs.

Applications

The Series 1500 can be configured to monitor
applications such as:■Generators

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Air compressors

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Gas compressors■Water treatment

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Fire pumps

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Sewage pumps

Features

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32 sensor inputs (N.O. and/or N.C.) for alarm
or shutdown.

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Six-button keypad for easy operation and
adjustments.

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RS232 output for interface with computers and
micro-controllers (modem required).

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Engine Automatic.

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Two Start-Run Timers.

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Four Control Relay Outputs.

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Pre/Postlube Time Delay.

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Typical standard program or customized*.

*

Murphy provides various standard preprogrammed
configurations. If a customer sensor input configura­tion is needed, Murphy will custom program your
unit at the time you order. Call Murphy for quote.

Warranty

A two-year limited warranty on materials and
workmanship is given with this Murphy product.
Details are available on request and are packed
with each unit.

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Elapsed Time Meter

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Process control

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Burner systems

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Natural gas refueling

NRTL/C

Approved for Class I,

Division 1 Groups C & D

How to Order

To order the Complete S1500 System: Monitor,
Terminal Block, Cable Assembly and Power
Supply), just specify the part number:

S1500

To order individual components and accessories
specify model number:

Specify: To Order:

S1500H
S1500TB32
S1500CA36
S1500PS
LCDT-ISB

Shipping Weights and Dimensions

Complete S1500 System: 28 lb. [12.7 kg.]; 20 x

S1500 H: 2 lb. (0.907 kg.); 6 x 6 x 6 in. (152 x

S1500 TB32: 2 lb. (0.907 kg.); 12 x 7 x 4 in.

S1500CA36: 2 lb. (0.907 kg.); 6 x 6 x 6 in.

S1500PS: 22 lb. (9.98 kg.); 17 x 10 x 9-

LCDT-ISB: 3 lb. (1.3 kg.); 9 x 10 x 6 in. (229 x

*

For Normally Closed sensor the use an intrinsically

safe (approved) barrier is required.

Monitor (Head) only
Terminal Block only
Cable Assembly only
Power Supply only
Intrinsically Safe Barrier
(for Normally Open Sensors*)

1

14 x 12-

152 x 152 mm).

(305 x 178 x 102 mm).

( 152 x 152 x 152 mm).

(431 x 254 x 248 mm).

254 x 152 mm).

/2 in. [508 x 356 x 318 mm]).

3

/4 in.

6 in.

(152 mm)

10-1/2 in.
(267 mm)

8-3/4 in.

(222 mm)

15 in.
(381 mm)
clearance
for conduit

4-1/2 in.

(114 mm)

3 in.

(76 mm)

TOP VIEW

SIDE VIEW

9 in.

(229 mm)

3/4 NPT

conduit fittings

(2) places

1/2 NPT conduit fitting

3-1/2 in.
(89 mm)

3-3/4 in.
(95 mm)

3-1/2 in.
(89 mm)

4-3/8 in.

(111 mm)

4-5/8 in.

(117 mm)

3-3/4 in.

(95 mm)

BACK VIEW

SIDE VIEW

3-9/16 in.

(90 mm)

3-9/16 in.

(90 mm)

MOUNTING HOLE

6-3/4 in.

(171 mm)

clearance for plug

Mounting

Clamp

7 in.

(178 mm)

3-1/32 in.

(77 mm)

FRONT VIEW

Specifications

DISCONTINUED

Series 1500 System

Power Consumption: 120 VAC (8 watts), 12 or 24 VDC (2.5 or 7.2 watts).

®

Sensor Inputs: 32 N.O. and/or N.C., such as Murphy SWICHGAGE

instru­ments. Inputs are factory-programmed as a Class A, B, C or P for shutdown,
alarm, or control function (specify).

Opto-Isolated Input: 12-120 VDC or 24-120 VAC, the opto-isolated input is

typically used as a run input, magnetic pickup and ignition.

Outputs: 4-SPDT relays, 4 A, 1/20 HP, 125/250 VAC/3A, 30 VDC.

NOTE: An approved isolation barrier must be used between the sensor
switch and input terminals if the sensor output comes from any energy stor­ing device such as a relay or transistor. (See LCDT-ISB

Barrier, at right).

Tachometer Sensing: From either CD Ignition or Magnetic Pickup.
Operating Temperatures: 32 to 122°F (0 to 50°C).
Storage Temperatures: -4 to 158°F (-20 to 70°C).
Case: ABS plastic, 1/4 DIN (90 x 90 mm).
Interface Output: RS232 communication port.
Alphanumeric Display: 2 lines, each line with 16 characters (32 total).
Laboratory Approvals: CSA and NRTL/C for Cl. I, Div. 1, Grps. C & D.
Power Supply Enclosure: Explosion-proof, Class I, Division 1. Intrinsically

safe barrier built into power supply, 120 VAC and 12 or 24 VDC power
supply barrier with dry contact relay functions such as:

Timers: 12 adjustable timers for:

•

Two Start-up lockouts•Test

•

Postlube

•

Crank

•

Process delay

•

Load delay

•

Rest

•

Ignition ground

Time Delay: Delay before ignition ground or electric motor stop, for

up to 59 seconds.

Terminal Block: Rail mount DIN type; 32 positions (screw type).
Backup Battery: Rechargeable during normal operation.

Provides up to 5 hours backup time.

Dimensions

•

Prelube

•

Idle

•

Run delay

LCDT-ISB Intrisically Safe Barrier

External barrier explosion-proof design for hazardous locations, according
to NEC requirements for Class 1, Division 1 Group D areas. The LCDT-ISB
accepts Normally Open sensor inputs (2 inputs per barrier). For Normally

Closed sensors, an intrinsically safe (approved) barrier is required.

Module, Terminal Block, Power Supply

•

Fuel valve

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Shutdown

•

Control (Pre/Postlube)

•

Engine Cranking

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Alarm

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Ignition

•

Compressor Loading

:

Terminal Block

Module (Head)

Power Supply