Murphy CNG-92200H - Manual (Page 4)

LEVEL II is a mid-range system
designed for the larger stations
with more shutdown inputs
being monitored than the LEVEL I
control system. The LEVEL II
system performs all the functions
of the LEVEL I, plus is available
for both single or dual electric
motor or engine drive
applications. A SELECTRONIC
®
Micro-Controller™ monitors
control functions and displays
status and faults in a two line
alphanumeric LCD display. By
selecting the appropriate Murphy
SELECTRONIC
® Micro-Controller™
for the specified hazardous area
classification (Div. 1 or Div. 2),
non-explosion-proof end devices
can be used. The LEVEL II
controller is housed in a NEMA 3
weatherproof enclosure.
Features:
Automatic start/stop control
for electric motor or engine
driver(s)
Available for NEC Class I,
Division 1 or Division 2,
Group D
Reliable microprocessor-based
control circuitry
Operates load/unload devices
SWICHGAGE
® instruments
included in control panel
Includes hourmeter
Accepts discrete analog inputs
Tachometer on
engine drive units
Operating parameters
field adjustable without
reprogramming
Expandable to interface with
multiple compressors or
multiple station controls
RS485 communications port
Wide variety of optional
features
Extremely user friendly
12, 24 VDC or 120 VAC power
required
Compatible with stand alone
priority/sequential controls
(see page 5)
NEMA 3 enclosure
LEVEL II
3
Suitable for larger stations with
simplex or duplex compressor(s).
LEVEL II Div. 2 Control System