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.
Murphys 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.
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.
- 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.