FW Murphy Selectronic S1501 series User manual

00-02-0271
2018-10-23
Section 50
SeriesS1501Selectronic®
Micro-Controller/Annunciator
ModelYear 2011 and Earlier
Installation and Operations Manual

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. The latest version of this manual can be found at www.fwmurphy.com.
Please read the following information before installing.
BEFORE BEGINNING INSTALLATION OF THIS FW MURPHY
PRODUCT:
Read and follow all installation instructions.
A visual inspection of this product before installation for any
damage during shipping is recommended.
Disconnect all electrical power to the machine.
Make sure the machine cannot operate during installation.
Follow all safety warnings of the machine manufacturer.
Please contact FW MURPHY immediately if you have any
questions.

Table of Contents
Product Description...................................................................................................................1
Installation...................................................................................................................................4
Mounting Dimensions...................................................................................................4
Typical Hazardous Areas Installation...........................................................................6
S1501 System - Typical Hook Up ................................................................................7
Power Supply –Typical Wiring Diagram....................................................................11
Operation...................................................................................................................................12
Operating the S1501 Interface...................................................................................12
Sequence of Operations - Engine Mode....................................................................13
Sequence of Operations –Motor Mode .....................................................................15
System Set Up Menus ...............................................................................................17
Editing System Set Up ...............................................................................................18
Troubleshooting.......................................................................................................................25
Specifications...........................................................................................................................27
Replacement Parts and Accessories....................................................................................28

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Product Description
The Series S1501 system is a microprocessor based alarm, shutdown, and control system
with tachometer/hourmeter function. It tells in alphanumeric characters which protective device
has signaled an alarm or caused equipment shutdown. Application programming is completed
at Murphy and can be changed in the field.
The system consists of:
S1501 Head
Power Supply - explosion proof
Terminal Block Assembly, rail mount type, accommodates 32 sensors (2 needed for 64
sensor models)
Flat Ribbon Cable - 36 inch (914 mm) to connect the terminal block to the head.
The S1501 is powered from 120 VAC or 12/24 VDC. It is approved for Class I, Div. 1, Groups
C & D areas.
S1501 Head
The Head is the brain of the micro-controller system. It contains a microcomputer, an
alphanumeric display and keypad for operator access to field adjustable functions, and 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 S1501 data
registers.
Alphanumeric Display
The S1501 Head displays each mode of operation. The display is a dot matrix alphanumeric
32-character display arranged in two lines (each with 16 characters). By observing the monitor,
the operator can determine the operating status of the control system.
Power Supply
An explosion-proof enclosure designed for Class I, Division 1, Groups C & D hazardous
locations contains the supply voltage conditioning circuits, head power supply, and the
intrinsically safe barriers for isolation between the power supply and the low energy head
circuits. The power supply accepts 120 VAC, 50-60 Hz and/or 12-24 VDC input power.
12-24 VDC power can be used as primary power or as a backup source of power when
120 VAC is used.

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Control Relays
The power supply has seven control relays to provide form “C” SPDT outputs for control
functions of either the engine or electric motor application.
Terminal Block Assembly
Each sensor input terminal block consists of a 64-position, 32 pair input rail-mount terminal
block for interface of panel or field-mounted end devices. For Class I Division 1 areas, end
devices must be non-energy storing devices, such as mechanical switches with dry contacts.
The terminal block is used for Normally Open sensors (one wire close to ground), and/or
Normally Closed sensors (two wires).
Ribbon Cable
A 36 in. (914 mm) flat ribbon cable is required for connection of the S1501 head and the
sensor input terminal block. The cable is supplied with two D-sub 37 PIN connectors at each
end of the cable.
Power and Control Cable
The S1501 is connected to the power supply via the Power and Control Cable
(15-conductor shielded cable, 72 in. [1.81 m] long). The cable is factory-sealed on the power
supply end, and has a 15-pin, D-sub connector on the S1501 Head end.
Sensor Inputs
User-selectable Sensor Input types (Shutdown or Alarm Only) are available for each sensor.
The sensor inputs are identified as follows:
Class A: Inputs are operative (armed) all the time.
Class B1: Inputs are enabled after the first preset Start-Run time period.
Class B2: Inputs are enabled after the second preset Start-Run time period.
Class C: Inputs are armed after the fault has been cleared for 2 seconds.
Class P: Armed after the Load Relay has exergized and the process time has expired.
Class ESD: Emergency Stop overrides the test lockout timer.
Permissive Function
This function was designed to monitor pre-lube pressure input. Terminal 32 of the sensor
terminal block is reserved for a permissive pre-lube input. The pressure signal can be obtained
from a pressure switch with normally open or normally closed contacts that indicates whether
or not sufficient oil pressure has been reached during pre-lubing. If permissive pressure has
not been reached, the system will not allow start-up. If the Permissive Function is not required,
install a wire jumper in Terminal 32 and set the Permissive Timer setting at zero.

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Opto-Isolated Tach/Run Input
The S1501 features an opto-isolated tach/run input located within the explosion-proof power
supply. This special input is used for Run Input Sensing from a CD ignition, Magnetic Pickup,
Motor Auxiliary Signal, or AC or DC run signals meeting the opto-isolated Tach/Run input
specifications (refer to the Specifications section of this manual).
NOTE: For tachometer sensing a magnetic pickup is recommended.
Built-In Barrier (within the Power Supply)
The S1501 power supply circuit is isolated from the Head by the intrinsically safe barrier
located on the printed circuit board (power supply enclosure), between the power supply
output and the power and control cable terminal block.
A fuse barrier mounted inside the Power Supply isolates the power output to the Head. Zener
diode shunt barriers isolate the seven control outputs from the Head.
Hourmeter
A hourmeter feature is available for the S1501 to record the engine or motor elapsed running
time.

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Installation
WARNING: Perform the mounting operation with power source off.
The S1501 Head was designed to be mounted within a
weatherproof enclosure. It is intended for mounting in a flat panel.
First, cut a square mounting hole of 3-5/8 in. (92 mm) x 3-5/8 in. (92 mm).
Insert the Head from the front side of the panel and install the two mounting clamps, one on
each side of the case, (see mounting clamp detail).
Secure the unit to the panel by tightening the clamps with a blade type screwdriver.
Mounting Dimensions

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Typical Hazardous Areas Installation
WARNING: FOR HAZARDOUS APPLICATION REQUIREMENTS, THE
S1501 COMPLETE SYSTEM MUST BE INSTALLED IN ACCORDANCE
WITH THE NATIONAL ELECTRICAL CODE (NEC) CLASS I, DIVISION
1, GROUP D (ARTICLE 504) SPECIFICATIONS. SENSOR INPUT
WIRES MUST BE SEPARATED A MINIMUM OF 2 IN. (51 MM) FROM
OTHER WIRES. USE OF SENSOR INPUT WIRE TYPE CONDUIT IS
RECOMMENDED.

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S1501 System - Typical Hook Up
WARNING: PERFORM THE WIRING OPERATION WITH THE POWER
SOURCE “OFF” AND THE AREA MADE NON-HAZARDOUS. MAKE
SURE THE VOLTAGE AND CURRENT REQUIREMENTS ARE WITHIN
THE S1501 SYSTEM RATINGS. CONDUIT IS REQUIRED TO
PROTECT WIRES FROM DAMAGE. REFER TO THE SPECIFIC
SYSTEM APPLICATION WIRING DIAGRAM SUPPLIED WITH YOUR
UNIT.
Head Connections
a. Interconnect the S1501 head and the power supply with the power and control cable,
secure the connector in place by tightening the screws on each side of the connector.
b. Repeat step (a.) for the RS232/RS485 serial port (if applicable).
c. The sensor input connector(s) from the terminal block(s) plugs into the back of the
Head. Secure by tightening the screws on each side of the connector.

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Typical Power Supply Connections
WARNING: Do NOT route the power supply wiring and the sensor
input lead wiring in the same conduit.
a. Conduit installation:
1) Remove power before opening power supply cover.
2) Install one 1/2 in. NPT or two 3/4 in. NPT conduits, from customer end of the Power
Supply.
Note: Follow NEC guidelines for maximum number of wires in conduit.
3) Install an approved explosion-proof seal in the conduit within 18 in. (457 mm) of
Power Supply enclosure (seal unused conduit holes).
Important: Green screw above conduit hole (power supply) is to attach
equipment ground per NEC.
b. Customer Installed Field Wiring: Install wiring to power supply through conduit
installed in “step 2-a”.
1) Run wiring from the power source to the S1501 power supply.
2) Connect the 120 VAC to the two AC Power Input terminals. Connect equipment
ground to green screw (see schematic below).
3) Connect the 12 or 24 VDC Positive (+) lead to Power Input terminal 12-24 DC.
4) Connect 12 or 24 VDC “DC(–)” lead to the GND terminal. (See “Power Supply
Typical Wiring Diagram”.)

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Normally Open Sensor Input Wiring
Wire each normally open sensor on top of the factory-supplied jumper. Loosen the screw and
slide the wire lead into the terminal without removing the jumper (either side of jumper).
Normally Closed Sensor Input Wiring
Remove the factory-supplied jumper completely. Connect the two sides of the normally closed
sensor to the two terminals of the terminal block.
NOTE: Switches connected to the S1501 Sensor Input Terminal Block
must be dry contact mechanical switches.
Intrinsically Safe Barrier Wiring
Important (normally open sensor only): Secure area of hazardous
conditions before opening barrier cover or operating sensor contacts.
a. Run Sensor switches wiring through conduit and isolate from the S1501 terminal
block(s) with an explosion-proof barrier.
b. For wiring refer to the following typical wiring diagrams.

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Normally Open System Barrier
LCDT-ISB barrier (optional)
Normally Closed System Barrier
For normally closed non-intrinsically safe sensors, use an approved intrinsically safe barrier,
and wire according to manufacturer’s instructions.

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Power Supply –Typical Wiring Diagram
WARNING: Perform the wiring operation with the power source
“OFF” and the area made non-hazardous. Make sure the voltage
and current requirements are within the S1501 system ratings.
Conduit is required to protect wires from damage. Refer to the
specific system application wiring diagram supplied with your unit.
NOTE 1: K-1 thru K-7 are relay outputs form “C” dry contacts.
D1 thru D8 are LED indicators.
D1= POWER ON;
D2=K1; D3=K2; D4=K3; D5=K4; D6=K5; D7=K6; D8=K7.
NOTE 2: Opto-isolated tach/run input jumper is shipped in the IGN
position. IGN socket is used for negative or positive ground type CD
ignitions. MPU socket is used for magnetic pickup or motor starter
auxiliary contact not to exceed 120 Vrms.

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Operation
Operating the S1501 Interface
Use the six membrane keys to scroll throughout the menus and to make changes to the
System timers, Tachometer calibration, Overspeed, Underspeed, Run Hourmeter (ETM), and
Sensor Setup..
YES - key used for scrolling up (increment).
NO - key used for scrolling down (decrement).
RESET - key used to reset alarms or shutdowns.
MODE - key used for mode and test time modes.
START/STOP –key used for Local mode start and stop signals.
ENTER - key used for entering/confirming set points and exiting menus

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Sequence of Operations - Engine Mode
ENGINE APPLICATION
EVENT
DISPLAY
RELAY
K1
K2
K3
K4
K5
K6
K7
Lube
Crank
Ign.
Fuel
Load
Alar
m
SD
WAITING ON START
Unit monitors for a valid start signal. Shutdown and
Alarm relays are energized. * User can at this time,
press the Mode key to modify desired setup tables.
Class A inputs are scanned.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On
Start signal received. Unit advances to Prelube cycle.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
On
Off
On
On
If an RPM signal is seen before the Start signal is
pressed, a fault occurs.
Unexpected
Engine Start!
Off
Off
Off
On
Off
Off
Off
PRELUBE CYCLE
Prelube cycle begins. Permissive timer starts. Lube
relay energized.
LUBE CYCLE...
Permissive x:xx
On
Off
Off
Off
Off
On
On
Permissive time expires before Permissive signal* seen
closed. Fault occurs. Lube relay is de-energized.
Permissive
Failure
Off
Off
Off
Off
Off
Off
Off
Permissive signal closed. Prelube Cycle timer started.
LUBE CYCLE...
Prelube x:xx
On
Off
Off
Off
Off
On
On
Prelube Cycle timer times down to zero. Unit advances
to Crank cycle.
LUBE CYCLE...
Prelube :00
On
Off
Off
Off
Off
On
On
CRANK CYCLE
Crank Relay energizes. If the Run Delay Preset is > 0,
the controller will wait for a Crank RPM permissive to
proceed. If set to 0, this cycle is skipped
CRANK PERMISS...
Run Delay x:xx
On
On
Off
Off
Off
On
On
Run Delay time expires before RPM > 10 is seen. Fault
occurs.
Engine Failure To
Crank!
Off
Off
Off
Off
Off
Off
Off
RPM > 10 is seen, or Crank Permissive cycle skipped.
Cranking continues with purge timer started at preset
time.
CRANK CYCLE...
Purge :xx
On
On
Off
Off
Off
On
On
Purge delay expires. Ignition relay is energized. Fuel
On delay is started.
CRANK CYCLE...
Fuel Delay :xx
On
On
On
Off
Off
On
On
Fuel On delay expires. Fuel relay energized. Crank
timer started. The Controller will monitor for a Crank
Disconnect RPM to advance to the Run Cycle.
CRANK CYCLE...
Crank :xx
On
On
On
On
Off
On
On
Crank timer expires before disconnect speed is
reached. Unit goes into Rest cycle. Crank, Ignition, and
Fuel relays are de-energized. When the Rest expires,
the Crank Cycle will repeat.
CRANK CYCLE...
Rest :xx
On
Off
Off
Off
Off
On
On
All crank attempts exhausted. Crank timer expires.
Disconnect speed not reached. Overcrank condition
occurs. All relays de-energized.
Overcrank
Shutdown!
Off
Off
Off
Off
Off
Off
Off

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K1
K2
K3
K4
K5
K6
K7
Lube
Crank
Ign.
Fuel
Load
ALM
SD
RUN CYCLE
Crank Disconnect RPM reached. Crank relay de-
energized. Class B1 Lockout, B2 Lockout and Load
timers started. Class C shutdowns are allowed to arm.
Speed: xxxxrpm
Class-B1 x:xx
Off
Off
On
On
Off
On
On
Class B1 and B2 Lockout timers expire. Elapsed time
displayed. Unit monitors for stop condition.
Speed: xxxxrpm
ETM: xxxxx.x hrs
Off
Off
On
On
Off
On
On
Load timer expires. Load relay energized. Process
Lockout timer starts. When this timer expires, Class P
shutdowns will be armed. User can press the Mode key
to initiate the Test timer and test sensor inputs.
Speed: xxxxrpm
Test Timer 5:00
Off
Off
On
On
On
On
On
IDLE CYCLE
Stop signal is seen. Load relay is de-energized. Class
P shutdowns are disarmed. Idle timer is started.
Speed: xxxxrpm
Idle x:xx
Off
Off
On
On
Off
On
On
ALARM FAULT
Alarm only input faulted. Alarm relay de-energized.
Fault alternately displayed with previous message
displaying the speed and run hours.
Low Coolant
Level
Off
Off
On
On
On
Off
On
S1501 Reset key pressed. Alarm relay is picked up.
Unit continues to scans for fault or stop condition.
Speed: xxxxrpm
ETM: xxxxx.x hrs
Off
Off
On
On
On
On
On
FAULT SHUTDOWN
Unit receives a fault at sensor #4 for instance. The Fuel
Valve, Alarm, and Shutdown relays are de-energized.
Speed: xxxxrpm
Ign. Gnd. :xx
Off
Off
On
Off
Off
Off
Off
Ignition ground delay expires. Ignition relay de-
energized. Postlube cycle begins. Lube relay
energized.
LUBE CYCLE...
Postlube x:xx
On
Off
Off
Off
Off
Off
Off
Postlube expires. Lube relay de-energized. Fault is
displayed.
Low Compressor
Oil Pressure
Off
Off
Off
Off
Off
Off
Off
S1501 Mode key pressed. Shutdown type displayed.
Sensor Input #04
Class B1,Shutdown
Off
Off
Off
Off
Off
Off
Off
S1501 Reset key pressed. Unit waiting on start input.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On
NORMAL STOP (AFTER IDLE CYCLE)
Stop signal received and idle timer expired. Ignition
ground delay begins. Fuel Valve relay de-energized.
Speed: xxxxrpm
Ign. Gnd. :xx
Off
Off
On
Off
Off
On
On
Ignition ground delay expires. Ignition relay de-
energized. Postlube cycle begins. Lube relay
energized.
LUBE CYCLE...
Postlube x:xx
On
Off
Off
Off
Off
On
On
Postlube cycle timer expires. The Lube relay is de-
energized. Unit returns to Waiting on Start.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On

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Sequence of Operations –Motor Mode
ELECTRIC MOTOR APPLICATION
EVENT
DISPLAY
RELAY
K1
K2
K3
K4
K5
K6
K7
Lube
Not
Used
Motor
Cooler
Load
Alarm
SD
WAITING ON START
Unit monitors for a valid start signal. Shutdown and
Alarm relays are energized. * User can at this time,
press the Mode key to modify desired setup tables.
Class A inputs are scanned.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On
Start signal received. Unit advances to Prelube cycle.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
On
Off
On
On
PRELUBE CYCLE
Prelube cycle begins. Permissive timer starts. Lube
relay energized.
LUBE CYCLE...
Permissive x:xx
On
Off
Off
Off
Off
On
On
Permissive time expires before Permissive signal* seen
closed. Fault occurs. Lube relay is de-energized.
Permissive
Failure
Off
Off
Off
Off
Off
Off
Off
Permissive signal closed. Prelube Cycle timer started.
LUBE CYCLE...
Prelube x:xx
On
Off
Off
Off
Off
On
On
Prelube Cycle timer times down to zero. Unit advances
to Wait On Run cycle.
LUBE CYCLE...
Prelube :00
On
Off
Off
Off
Off
On
On
WAIT ON RUN CYCLE
Motor Relay energizes. Run delay and Cooler On
Delays begin timing. The controller monitors for an
electric motor auxiliary contact run confirmation.
Waiting On Run
Run Delay x:xx
On
Off
On
Off
Off
On
On
Run Signal not received before the delay expires, Fault
occurs. All relays de-energize.
Motor Starter
Failure!
Off
Off
Off
Off
Off
Off
Off
S1501 Reset key pressed. Unit waiting on start input.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On
RUN CYCLE
Motor auxiliary contact seen closed. Lube relay de-
energizes. Class B1 Lockout, B2 Lockout and Load
timers started. Class C shutdowns are allowed to arm.
Motor Running...
Class-B1 x:xx
Off
Off
On
On
Off
On
On
Cooler On delay expires. The Cooler relay energizes.
Motor Running...
Class-B1 x:xx
Off
Off
On
On
Off
On
On
Class B1 and B2 Lockout timers expire. Elapsed time
displayed. Unit monitors for stop condition.
Motor Running...
ETM: xxxxx.x hrs
Off
Off
On
On
Off
On
On
Load timer expires. Load relay energized. Process
Lockout timer starts. When this timer expires, Class P
shutdowns will be armed. User can press the Mode key
to initiate the Test timer and test sensor inputs.
Motor Running...
Test Timer 5:00
Off
Off
On
On
On
On
On
IDLE CYCLE (COOLDOWN)
Stop signal is seen. Load relay is de-energized. Class
P shutdowns are disarmed. Idle timer is started.
Motor Running...
Idle x:xx
Off
Off
On
On
Off
On
On
ALARM FAULT
Alarm only input faulted. Alarm relay de-energized.
Fault alternately displayed with previous message
displaying the speed and run hours.
Low Coolant
Level
Off
Off
On
On
On
Off
On
S1501 Reset key pressed. Alarm relay is picked up.
Unit continues to scans for fault or stop condition.
Motor Running...
ETM: xxxxx.x hrs
Off
Off
On
On
On
On
On

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K1
K2
K3
K4
K5
K6
K7
Lube
Not
Used
Motor
Cooler
Load
Alarm
SD
FAULT SHUTDOWN
Unit receives a fault at sensor #4 for instance. Motor,
Cooler, Load, Alarm and Shutdown relays are de-
energized. Postlube cycle begins. Lube Relay
energized.
LUBE CYCLE...
Postlube x:xx
On
Off
Off
Off
Off
Off
Off
Postlube expires. Lube relay de-energized. Fault is
displayed.
Low Compressor
Oil Pressure
Off
Off
Off
Off
Off
Off
Off
S1501 Mode key pressed. Shutdown type displayed.
Sensor Input #04
Class B1,Shutdown
Off
Off
Off
Off
Off
Off
Off
S1501 Reset key pressed. Unit waiting on start input.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On
NORMAL STOP (AFTER IDLE-COOLDOWN CYCLE)
Stop signal received and idle timer expired. Motor, and
Cooler relays de-energized. Postlube cycle begins.
Lube relay energized
LUBE CYCLE...
Postlube x:xx
On
Off
Off
Off
Off
On
On
Postlube cycle timer expires. The Lube relay is de-
energized. Unit returns to Waiting on Start.
Waiting On Start
ETM: xxxxx.x hrs
Off
Off
Off
Off
Off
On
On