EMS-94072N page 1 of 8
Description
NOTE: The following applies to all EMS447 and EMS448 models.
However, program changes to the micro-processor chip may affect
operating procedures. See Section “2” of these Instructions for details on
your specific program or the sequence of operations provided with custom
programmed units.
The EMS447 and EMS448 Electronic Monitoring Systems/Controllers are
micro-processor based for monitoring and control of equipment functions.
The basic EMS system is programmed for a typical industrial engine power
unit. Custom programming is available to adapt the EMS to a wide variety of
engine and equipment requirements.
Basic programs provide auto-start/manual start and first-out shutdown for
engine functions such as pressure, temperature, level and overspeed.
Necessary time delays for start up lockout are included. Operating data is
displayed on a 32 character back lit alphanumeric liquid crystal display.
The EMS operating parameters are configured through a simple three-button
interface. Access to the system memory is controlled by entry codes.
A password-protected program uses built-in memory to display the
alarm/shutdown history, including a display of the last ten shutdowns, when
and why they occurred and displays all of the engine operating conditions at
time of last shutdown.
Program #01 Features
An on-board hourmeter keeps a log of equipment running hours and alerts you
when to change oil, filters and perform other routine service.
Ramp Oil Pressure monitoring protects equipment at both high rated speed and
low idle speed. For instance, based on engine manufacturer’s requirement,
shutdown could occur at 30 lb. (207 kPa) pressure at 1800 RPM or at 5 lb. (34
kPa) at 600 RPM or any shutdown point in between.
Sensor Inputs
(See page 2 for details)
Electric Gage Senders:
Accepts Murphy or equivalent resistance type senders.
NOTE:
Configurations available for 4-20 mA or 0-5 VDC inputs.
Digital Inputs:
Accepts three opto-isolated bi-polar inputs (positive or negative),
typically wired to external shutdown switches. One additional input can be ordered
and traded for one transistor output.
Frequency Input:
This optically isolated speed sensing input senses a speed signal
from a magnetic pickup.
Communications
Both models, EMS447 and EMS448, include an RS485 serial port. By using the RS485
port and the necessary software you can monitor the status of your equipment from a
remote location. A communications software package and a RS485 to RS232 converter
are needed to interface with a PC (IBM
®
compatible computer). Set your
communications package to 9600 baud, N-8-1. Terminal emulation mode must be ANSI,
and there must be a line in the CONFIG. SYS FILE to define system device as ANSI.
S449 Relay Output Boards
These relay output boards are used for additional relay contact capability. They
require a ribbon cable with solder type, D-subminiature connectors such as our
optional EMS25CAR2 assembly, (see Basic Models and listings, below).
Basic Models
EMS447
:
Comes in an extruded aluminum enclosure suitable for panel
mounting. Wiring is via optional wiring harness. Relay boards are available for
additional relay contact capability, see listings below:
EMS25TB:
Plug-in terminal block assembly.
EMS25RM:
Rail mount DIN type terminal block.
EMS25CAR2:
Ribbon cable with 2 male D-sub connectors.
EMS25TBCAR2:
Ribbon cable with 1 male and 1 female D-sub connector.
EMS25CAS:
Male connector and color coded cable 9 ft. (2.74 m) std. length.
EMS25MS:
Solder type male connector (D-Subminiature).
S449-2:
Dry Relay board for EMS447 models.
S449-4:
Transistor Digital and Dry Relay board for EMS447 models.
EMS448:
Comes in a NEMA 4X type enclosure. Wiring is connected directly to
the S449-3 relay board terminal block located within the enclosure. Relay board for
additional relay contact capability is available.
S449-1:
Dry Relay board for EMS448 models only.
GENERAL INFORMATION
Please read the following instructions before installing
.
A visual inspection of this product for damage is recommended before installing.
It is your responsibility to have a qualified technician install the unit and make sure installation conforms with local codes.
EMS-94072N
Revised 10-04
Section 40
(00-02-0200)
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
✔
Disconnect all electrical power to the machine.
✔
Make sure the machine cannot operate during installation.
✔
Follow all safety warnings of the machine manufacturer.
✔
Read and follow all installation instructions.
EMS447 and EMS448 Monitoring Systems
Installation and Operation Instructions
Generic for All Versions. S449 Board Included
CAUTION:
Certain danger to human and to equipment
such as applied in a mobile or marine application may occur
if some equipment is stopped without pre-warning. It is
therefore, recommended that monitored functions be limited
to alarm only or to alarm before shutdown in such applications.
R
R
C
EMS447
Listed for Cl. I, Div. 2, Grps. A, B, C & D hazardous areas on
EMS447 (all transistor outputs) and EMS448 (board only).
EMS448
