Murphy EMS PRO User Manual

Section 40 00-02-0716
2013-06-03 - 13 -
• Transducer: Starting and stopping is controlled by S Number set points. System pressure,
level, and temperature are available in the “transducer type” S Number.
NOTE: SCADA START. If the engine is not already running, an auto start can be
accomplished through the Modbus start/stop register. This feature does not
function if the engine is already running from one of the above conditions. If the
engine is running, and the actual start condition is not present, an auto stop will
occur if the start/stop register is “toggled” to “1” then back to “0”.
Start Sequence
• When the AUTO - OFF- MAN key switch is in the “AUTO" position (with no failures present), the
SELECTOR text line displays “AUTO” and the text line STATE displays “PANEL READY”.
NOTE: When the key is turned to the AUTO position, and ECU is selected for
engine type, the ECU enable output will turn ON for a period of 30 minutes prior
to the engine starting. After this 30 minute period of inactivity, the output will
become inactive. This delay will not prevent an auto start sequence from
occurring. The following shutdown/alarm circuits are armed:
1. LOW FUEL ALARM Self-clearing alarm if set point is above 0%.
• When a start condition occurs, the controller initiates an auto start sequence. The SELECTOR: text
line will display start type while the STATE: text line will display “START DELAY”:
 The start condition must remain active throughout the start delay, or the delay will reset to
zero.
• When the “START DELAY” expires, the following will occur:
 The STATE: text line will display “PRESTART DELAY”.
 The “prestart delay” begins timing.
 The prestart output turns ON.
• When the “PRESTART DELAY” expires, the following will occur:
 The following shutdown circuits are armed:
- LOW COOLANT LEVEL.
- HIGH / LOW OIL LEVEL.
- HIGH DISCHARGE PRESSURE.
- OVERSPEED.
- OVERCRANK.
- PUMP LOW OIL LEVEL.
- PUMP HIGH OIL TEMPERATURE.
- PUMP HIGH HOUSING TEMPERATURE. (N.C. opens for fault)
- XDUCER OOR (OUT OF RANGE) HIGH (Only if float backup not selected)
- XDUCER OOR (OUT OF RANGE) LOW (Only if float backup not selected)
- HIGH SYSTEM LEVEL (Self-clearing alarm or shutdown)
- LO SYSTEM LEVEL (Self-clearing alarm or shutdown)
- Auxiliary 1 (configurable)
- Auxiliary 2 (configurable)
- Auxiliary 3 (configurable)
 The ECU output is turned on.

Murphy EMS PRO Specifications

General

Brand	Murphy
Model	EMS PRO
Category	Controller
Language	English