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EPC 2000
Multiplex Parallel Rack Control
CONTROL SYSTEM
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Setpoints and system
configuration stored within
serial EEPROM
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Logged Data stored within
Battery Backed Memory chip,
minimum of 10 years storage
life
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Clock is Y2K compliant, leap
year compatible until year
2100 and is battery backed
for a minimum of 5 years
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Menu driven controls with all
operating sequences and control
algorithms included.
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The control has non-volatile
program memory and a battery
backed clock in the event of a power outage.
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All programmable options are
installed via a Yes/No or
Installed/Not-installed question.
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Keypad
-- Front Panel accessible with 15
tactile key switches.
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Key Assignments
--Up, Down, Enter, Pass code/+-,
Specific Functions.
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Display
-- 16x2 character LCD with
backlight. Backlight will shut
off after 30 minutes. It will
turn on when any key is pressed.
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Power
--120/208/240 VAC, 50/60hz 40VA
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Housing --
Metal Cabinet, NEMA 1
INPUTS
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Suction Pressure --
Up to 2 Suction Groups
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Discharge, or Head,
Pressure
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Receiver Tank Level
Sensor
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Suction Pressure
Reset Case Temperature Sensor --
1 per suction group
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Satellite Case
Temperature Sensor --1
per Satellite Compressor
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Liquid Line Drop Leg
Temperature Sensor
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Ambient Temperature
Sensor
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Heat Reclaim Relay
Status
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Gas Defrost Status
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Auxiliary Alarm
Inputs
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Defrost Termination
-- 1 per defrost
circuit \par \tab \par
Pressure Transducers -- 3-wire,
V+ Signal Ground, analog 1 to 6 VDC
signal Ranges--0 to 100 PSI, 0 to 200
PSI, 0 to 500 PSI
Temperature Sensors -- 2-wire,
Microprocessor based, -40 to 158 °F
Digital Inputs -- All
Digital Inputs are low voltage, 5VDC open
or close signal inputs. All digital
signal sources are non-polarity specific.
Receiver Tank Level --3-wire,
V+ Signal Ground, analog signal.
Indicates 0 to 100%. Allowable input
signals--1 to 2VDC, 0 to 5VDC, 1 to 6VDC
OUTPUTS--Control
Relays
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All Relay Outputs are 1 Form C
SPDT rated for 250VAC and 3Amp
per circuit.
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Each relay circuit is fused with
a 3Amp Slowblow fuse on the
common leg.
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All relay action is indicated by
an LED on the PC board next to
the relay.
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All wiring terminals are
un-pluggable Molex terminals.
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