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ENERNET Corporation's General Purpose Control is a compact, multi-channel signal acquisition, processor and switch module housed in a molded plastic enclosure. Ideal in compressor control applications, it contains a Cypress Neuron making it LonWorks® capable; operating firmware evaluates a number of analog and status input signals and implements a series of Form A contact closures as outputs. The module has two isolated, line-voltage status inputs (ON/OFF) to detect switched sensors. Five other low voltage (0-5V) analog inputs can accept most process sensors; strain gauge, pressure, temperature, 4-20 mA current loop (et al.). Analog resolution is 10 bits or, optionally, 12 bits. Sensors can be powered with on-board 5 volt supply.
Two banks of solid state relays are capable of a combined load of 5
amperes maximum at 120 or 240 VAC. The bank feature permits simple
connection of safety (or other) switches in series with a controlled
load (e.g. temperature or pressure safety switch). Each relay has an
associated status lamp. The module is compatible with FT-10 LonWorks®
networks.
Features:
- UL: 984 Compressor Standard and 873 Electrical Component for HVACRRecognized
- 120 / 240 vac operation
- Optically isolated direct line voltage status interface
- Optically isolated line voltage control output
- Safety limit input sources power to outputs
- A safety failure forces outputs (except alarm) to fail-safe off condition
- Alarm output voltage independent of control output voltage source
- Custom Firmware
- FT10 topology
- +5 volt DC sensor excitation
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TECHNICAL SPECIFICATIONS
LON
GENERAL
Enclosure:
Housing: ABS plastic injection molded shell Size: 6.8" x 5.2" x 1.5"
Mounting:
Flange
ELECTRICAL
Operating Power:
Voltage: 115 / 230 VAC @ 60 Hz
Voltage Range: ±15% of nominal
Power: 2 Watts nominal, 4 Watts Max.
Input/Output:
Analog Inputs:
Channel Capacity: 6
Pressure Inputs: 3 (Single Ended Ground
Referenced)
Temperature Inputs: 2 (2 Wire Bridge)
Input Impedance: > 100K Ohms
Unused: 1
Accuracy
Temperature: ±0.25°F of Reading over 155 -
255 °F Range
Pressure: ± 0.4 PSI of Reading over 0 - 400 PSI
Range
Raw analog range: 0-5 volts DC, ratio metric
with onboard 5VDC supply
Control Outputs:
Number of Outputs: 7, optically isolated
Output Form: SPST (Form A) Solid State Relay
Operating Voltage: 115 / 230 VAC @ 60 Hz
The solid state relays used are suitable for the
following load applications:
Voltage
(VAC)
In Rush
(amps)
Holding amps
(per channel)
115 / 230 3.0 0.5
TOTAL PERMISSIBLE LOAD (ALL OUTPUT
CHANNELS @ 20 deg. C ambient)
3.37 Amps (in housing)
5.0 Amps (bare PC board)
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Example Instrumentation Input Devices:
- Discharge Pressure: T.I. P/N 2CP5-3 (Range - 6.7 - 420 PSIG)
- Oil Pressure: T.I. P/N 2CP5-3 (Range -6.7 - 420 PSIG)
- Suction Pressure: T.I. P/N 2CP5-4 (Range -14.7 - 145.2 PSIG)
- Motor Temperature: UUA35J1 5,000 Ohms @ 25 °C NTC
- Discharge Temperature:UUA35J1 5,000 Ohms @ 25 °C NTC
ESD Withstand Voltage for No Hard Failures:
2.0 kV
Standards:
FCC Part 15
LEDs:
- Number of Indicators: 10 (L.E.D.) Status Lamps (7): Green (output indicator)
- Alarm Lamp (1): Red (output indicator)
- Coded Lamp (1): Red (Local indicator)
- Service Pin lamp (1): Yellow (Local indicator)
ENVIRONMENTAL
Temperature Range:
- Operating: -40° to +85°C
- Storage: -40° to +85°C
Humidity Range:
10% to 95% RH, non-condensing at 70oC
COMMUNICATION
Network:
Protocol: LonWorks® (LonMark Compliant)
Medium: FT-10 Twisted Pair
Comm. Rate: 78 kilobits per second (kbps)
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