Electronic Monitoring Systems
Revised
Catalog Section 40
C | R | R |
Approved for Cl. I, Div. 2, Grps. C & D areas on EMS447 (all transistor out- puts) and EMS448 (board only).
Patent
Pending
EMS447
EMS447 / EMS448 Controllers
■Full Equipment Protection(1)■Field Adjustable Parameters(1)
■■Shutdown History File(1)
■Service Reminders(1)■Back Lit LCD or VFD Alphanumeric Display
■1/4 DIN or NEMA 4X Enclosed ModelsDescription
The EMS447 and EMS448 Electronic Monitoring Systems/Controllers are
Basic programs provide
Operating data is displayed on a 32 character back lit alphanumeric liquid crystal display.
The EMS operating parameters are configured through a simple
A
Basic Program Features
An
Ramp Oil Pressure monitoring protects equip- ment 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.
Basic Models
EMS448 has an extruded aluminum enclosure suitable for panel mounting. Wiring is via optional wiring harness. Relay boards are available for additional relay contact capabil- ity. Refer to “Accessories” on the back page.
EMS448 has a NEMA 4X type enclosure. Wiring is connected directly to the relay board terminal block located within the enclosure. Relay board for additional relay contact capability is avail- able. See “Optional Accessories” on reverse side.
Applications
● Industrial Engines | ● Compressors |
● Generators | ● Trucks |
● Construction Equipment | ● Pumps |
Specifications
Input Voltage: 10 to 28 VDC.Operating Temperature:
Storage Temperature:
Display: Alphanumeric:
Relative Humidity: 95%RH @ 140°F (60°C).
Communications: RS485 port, standard.
Sensor Inputs:•Digital:
•Analog: Up to 8
•Frequency: 1
•3-Transistor digital: 125 mA sinking.(4)
•
2-Transistor digital: 125 mA sinking.
2 DPDT, 2A @ 220 VDC, 250 VAC. (5)
EMS448 Outputs:•
•
2 DPDT, 2A @ 220 VDC, 250 VAC.(5)
Shipping Weights and DimensionsEMS447:
EMS448:
(1)Program specific.
(2)One additional input can be ordered and traded for one transistor output.
(3)Isolates the internal circuitry of the Murphy EMS from the sensor input circuitry to help avoid electrical noise and damage.
(4)One additional output can be ordered and traded for one digital input.
(5)One DPDT pole has common connected to battery+. N.O. available fused and unfused.
*Not Class I, Division 2 approved.