Murphy 1501 User Manual

■

Alarm/Shutdown for 32 or 64 N.O. or N.C. Sensors

■

Operating Sequence Selection

■

Field Adjustable Sensor Nomenclature

■

Selectable Sensor Lockouts Class A, B, C or P

■

Built-In Tachometer/Overspeed Function

■

RS232 or RS485 Modbus RTU Communications

■

Two Start/Run Timers and Elapsed Time Meter

■

CSA Certified or NRTL Approved for Use in
Class I, Div. 1 Grps. C & D Hazardous Locations

Description

The Series 1501 instrument is a microprocessor­based alarm, shutdown and control system with
tachometer/hourmeter function. It annunciates
in alphanumeric characters the protective device
that has signaled an alarm or caused equipment
shutdown. Information is called up and adjust­ments are made on a six-button keypad on the
face of the unit. Configurations such as: Alarm
or Shutdown Nomenclature, Preset Timers, and
Tachometer Calibration can be made in the
field.

Murphy’s Series 1501 system has seven SPDT
relays. On the standard model, the relays are
assigned to the following functions: Lube,
Crank, Ignition/Motor, Fuel Valve, Load,
Alarm, Shutdown.

The complete Series 1501 system consists of a
head (monitor), sensor input terminal strip (two
needed for 64 sensor models), 36 inch (914
mm) flat ribbon cable(s) for connecting the ter­minal block to the head/monitor, and a Class I,
Div. 1, explosion-proof power supply.

The Series 1501 system is powered from 120
VAC or
12 or 24 VDC. The head/monitor is rated intrin­sically safe and includes a communication port:
RS232 or RS485 (Modbus RTU slave). This
port allows for remote control functions such as
Start/Stop, Load/Unload, etc., and for access to
Series 1501 registers.

Applications

The Series 1501 system can be configured to mon­itor applications such as: Air and Gas
Compressors, Natural Gas Refueling, and other
Industrial Operations. For a list of applications and
our cataloged programs contact a Murphy sales
representative. Custom programming available at
additional charge.

Features

■

32 or 64 sensor inputs (N.O. or N.C.) for
alarm or shutdown.

■

Easy operation/adjustments Six-button keypad.

■

RS232 or RS485 Modbus RTU communica­tions.

■

Automatic Engine Control.

■

Two Start-Run Timers.

■

Seven Control Relay Outputs.

■

Pre/Postlube Time Delay.

■

Automatic Compressor Loading.

Specifications

Power Consumption: 120 VAC (7.5 VA);

12 VDC (3.5 watts); 24 VDC (3.5 watts).

Sensor Inputs: 32 to 64 N.O. and/or N.C. inputs

such as Murphy Swichgage

®

instruments.
Field selectable as a Class A, B1, B2 , C , P or
ESD for shutdown, alarm, or control function.

Outputs: 7-SPDT relay outputs, 5 A, 1/16 HP,

125/250 VAC/ 1 A, 30 VDC.

NOTE: For hazardous areas an approved isola­tion barrier must be used between sensor switch
and input terminals if the sensor output comes
from any energy storing device such as a relay or
transistor.

Adjustable Time Delays:

(standard Series 1501)

•

Prelube

•

Rest

•

Process Delay•Permissive

•

Run Delay•Idle/Cooldown

•

Purge

•

Postlube

•

Fuel Delay•Crank

•

Load Delay•Test

•

Class B1 Sensor Lockout

•

Class B2 Sensor Lockout

•

Before Ignition Ground or Electric Motor
Stop (for up to 59 seconds)

Sensor Inputs Terminal Block: Rail mount

DIN type; 32 terminals, screw type.

Opto-Isolated Tach/Run Input: Magnetic

pickup, 4.5 to 120 Vrms, 0-10 kHz. CD igni­tion, positive or negative ground, 100 to 300
VDC, 3-666 Hz. 12 to 125 VDC or 120 Vrms,
50/60 Hz may be used for run signals.

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: Factory configured for

RS232; field-selectable for RS485 (specify
for factory configured RS485).

Alphanumeric Display: 2 lines, each line with

16 characters (32 characters total).

Power Supply Enclosure: Explosion-proof,

Class I, Division 1. Intrinsically safe barrier
built into the power supply, 120 VAC with 7
form “C” relay outputs for the following
functions (with standard S1501):

•

Lube•Load •Crank•Alarm

•

Ignition/Motor•Shutdown •Fuel Valve

NRTL/C

S15-96122B

Revised 07-06

Catalog Section 50

Series 1501 Selectronic

®

Micro-Controller/Annunciator

S15-96122B page 1 of 2

S15-96122B page 2 of 2

Terminal Block

Power Supply

Module Side View

Back View

DimensionsHow to Order

To order the Series 1501 system specify the model number for each
individual component and accessory:

Specify: To Order:

S1501H-32-2

Head with RS232 port for 32 sensors.

S1501H-64-2

Head with RS232 port for 64 sensors.

S1501H-32-4

Head with RS485 port for 32 sensors.

S1501H-64-4

Head with RS485 port for 64 sensors.

S1501CH-32-2

Head w/custom* program, RS232 port, 32 sensors.

S1501CH-64-2

Head w/custom* program, RS232 port, 64 sensors.

S1501CH-32-4

Head w/custom* program, RS485 port, 32 sensors.

S1501CH-64-4

Head w/custom* program, RS485 port, 64 sensors.

S1501CC48

Communications Cable Assembly, 48 in. (1.2 m) long.

S1500TB32

Terminal Block only**

S1500CA36

Ribbon Cable Assembly**

S1501PS-120

120 VAC, 12 or 24 VDC Power Supply.

Accessories:

S1501PCA72

Power and Control Cable Assembly, 72 in. (1.8 m) long.

S1501PS-120-E

Power Supply with 90° Conduit Elbow fitting.

S1501PS-120-LC

Power Supply Less Case.

* Specify program number or contact Murphy for available programs listings.

** Two required for 64 sensor models.

Approximate Shipping Weights

Complete Series 1501 System: 28 lb. (12.7 kg).
S1501H-32-2; S1501H-64-2; S1501H-32-4; S1501H-64-4; S1501CH-32-2;

S1501CH-64-2; S1501CH-32-4; S1501CH-64-4: 2 lb. (0.907 kg).
S1500TB32: 2 lb. (0.907 kg).
S1500CA36; S1501CC48; S1501PCA72: 2 lb. (0.907 kg).

S1501PS-120-LC: 3 lb. (1.36 kg).
S1501PS-120 and S1501PS-120-E: 22 lb. (9.98 kg).

Approximate Shipping Dimensions

Complete Series 1501 System: 20 x 14 x 12-1/2 in. (508 x 356 x 318 mm).
S1501H-32-2; S1501H-64-2; S1501H-32-4; S1501H-64-4; S1501CH-32-2;

S1501CH-64-2; S1501CH-32-4; S1501CH-64-4: 6 x 6 x 6 in. (152 x 152 x 152 mm).
S1500TB32: 12 x 7 x 4 in. (305 x 178 x 102 mm).
S1500CA36; S1501CC48; S1501PCA72: 6 x 6 x 6 in. (152 x 152 x 152 mm).
S1501PS-120-LC: 12 x 7 x 4 in. (305 x 178 x 102 mm).

S1501PS-120 and S1501PS-120-E: 17 x 10 x 9-3/4 in. (431 x 254 x 248 mm).

Warranty

A limited warranty on materials and workmanship is given with this FW Murphy
product. A copy of the warranty may be viewed or printed by going to
www.fwmurphy.com/support/warranty.htm

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. MURPHY, the Murphy logo, and Selectronic®are registered and/or com­mon law trademarks of Murphy Industries, Inc. This document, including textual matter and illustrations, is copy­right protected by Murphy Industries, Inc., with all rights reserved. (c) 2006 Murphy Industries, Inc.

www.fwmurphy.com

918.317.4100 Email: [e-mail]

3-3/4 in.
(95 mm)

3-1/16 in.

(78 mm)

4-1/2 in.

(114 mm)

4-5/8 in.

(117 mm)

Mounting

Clamp

4-3/8 in.

(111 mm)

6-3/4 in. (171 mm)

(178 mm)

9 in.

(229 mm)

(219 mm)

3-1/2 in.
(89 mm)

clearance for plug

7 in.

8-5/8 in.

64-sensor

models only

3-1/2 in.
(89 mm)

3-1/32 in.

(77 mm)

15 in.
(381 mm)
clearance
for conduit

10-5/8 in.
(270 mm)

(2) places

3/4 NPT

conduit

fittings

1/2 NPT conduit fitting

5-15/16 in.
(151 mm)