158
CMC TECHNICAL REFERENCE MANUAL
1X36003 Version 2.52
1996-1999 Ingersoll-Rand Company
Date of Issue: 18-Oct-1999
OPTIONS
Analog Inputs (Monitor, Alarm and Trip)
Any Temperature
Any Pressure
Any Vibration
Any 4-20 mA signal
Digital (Discrete) Inputs (Monitor and Alarm or Trip)
Low water flow
Dirty inlet filter (switch supplied loose)
Dirty oil filter
Low oil level
High condensate level (common for all traps)
High motor temperature
Any Discrete Input
Panel Enclosures
Cooing Fan with Filter
110/115 VAC, 50/60 Hz, 0.24 Amps, 20 Watts
Air flow with filter 36 CFM (61 M3/Hr)
NEMA 4 Enclosure
Space Heater, Vortex Tube Cooler
NEMA 4X Enclosure
Space Heater, Vortex Tube Cooler
Stainless steel or epoxy coated carbon steel
Space Heater
120 VAC, 120 Watts, finned strip heater
Bimetallic baseboard type thermostat set at 45 degF (7 degC)
Vortex Tube Cooler
25 SCFM (42 NM3/Hr) at 100 PSIG (7 BarG) of compressed air
1500 BTU/Hr (378 kCal/Hr), Thermostat set at 90 degF (32 degC)
Solenoid operated valve, Air Filter
Type Z Purge
Select-able quick and normal flow rates with meters
Differential pressure switch set at 0.2 inches (5 mm) of water
Loss of purge indication, Relief valve, Warning label
Fused Control Power Disconnect
Rotary handle through door, 30 amp fuse
Ground Fault Protector for UL Panels
120 Vac circuits protected against ground fault currents.
Control Electrical Package (Standard on CV)
Prelube Pump Motor Starter
Two horsepower and less
Available voltages 380, 460, 575 VAC
Maximum voltage rating 600 VAC, 10 Amp rating, 120 VAC coils
IEC Style
Heater Contactor
IEC Style, Adjustable ambient compensated overloads
Available voltages 380, 460, 575 VAC
Maximum voltage rating 600 VAC, 10 Amp rating, 120 VAC coils
Control Power Transformer
Machine tool type, 230, 460, 575 VAC to 120/95 VAC
500 VA or optional 1000 and 1500 VA, 50 or 60 Hz
Transient Voltage Surge Suppressor
UL 1449 Listed
Tested to ANSI / IEEE C62.41 category A and B environments.
Stage Data Package (Standard on CV)
Interstage Air Pressure and Temperature each stage
Alarm Horn
80-95 dBA, 2900 Hz
Running Unloaded Shutdown Timer
Timing range and mode select-able through CMC
Water Solenoid Post Run Timer
Timing range and mode select-able through CMC
Inlet Valve Tight Closure
Keeps inlet valve closed until motor reaches full speed
0-30 second timer range settable by IR Service Tech
Diesel Engine Driven Compressor Control
Steam and Gas Turbine Driven Compressor Control
Main Motor Starter (Wye-Delta)
NEMA Size 5 or 6
Open transition type, Ambient compensated overloads
Available voltages 380, 460, 575 VAC, 120 VAC coils
Power Regulating Transformer
120 VAC, 60 Hz, 250 VA
-65% Input Channel line variation, Output C5-10% NEMA
Specification
±
15% Input Channel line variation, Output Channel
±
3%
Automatic Starting
Automatic Hot Start
REMOTE FUNCTIONS DISABLED/ENABLED Selector Switch
Solenoid Valves for Intercoolers
CMC settable start up pressure setpoint
Post Run Water Flow Timer
Automatic Cold Start
CONTROL POWER LOCAL/OFF/ COLD Selector Switch
Strobe Light
Solenoid Valves for Intercoolers and Instrument Air Line
CMC settable start up pressure setpoint
Post Run Water Flow Timer
Start Timer
Lube Oil Alarm Bypass Timer
COMMUNICATIONS OPTIONS
Communications Card(s)
Up to three cards per module RS-422/485
Local/Network Selector Switch
Direct CMC Communication with RS422/RS-485
Requires programming application by customer
Utilizes standard MODBUS protocol or Allen-Bradley DF1 protocol for
PLC2, PLC5 and SLC500 devices
Hard Wired Communication
REMOTE FUNCTIONS DISABLED/ENABLED Selector Switch
Contacts for Remote Start/Stop, Load/Unload, Acknowledge/Reset
Trouble Indication Contacts (Alarm and Trip, Alarm Only or Trip Only)
Remote 4-20 for Pressure Setpoint
Running Unloaded Contact
Centac Energy Master (CEM)
Features
Sequencing, load sharing and data logging for eight (8) compressors
A CMC Communication Adapter mounted in each CMC panel
Max distance from last compressor to CMC Communication Adapter is
4000 feet (1218 meters)
RS-232 to RS-422 Converter
CEM Personal Computer
Intel Pentium processor, 32 MBytes RAM, CD ROM Drive, 3.5 inch
diskette drive, Program size approximately 30 MByte; however, hard disk
should be sized for data logging (recommend 100 MBytes), Windows 95
or NT (NT Preferred), Color monitor, Printer (Optional)
CUSTOMER RESPONSIBILITIES
Three phase power
Clean, dry control air 80-150 PSIG (5.62-10.55 kg/cm2)
Control air tubing from control air header, 1/4 in (0.635 cm) FNPT
connection
Mount and wire external switches and field wired devices
Tuning control parameters for system
Current transformer – instrument grade
0-5 amp
Better than 1% accuracy
CONTROLLER OPERATING ENVIRONMENT
Electrical Operation
115 VAC
±
5%
24 VDC Instruments except three wire RTDs
32 VA of AC power requirement
50/60 Hz AC supply frequency
Temperatures
Operating temperature 32 to 140 degF (0 to 60 degC)
Storage temperature -4 to 158 degF (-20 to 70 degC)
Relative Humidity
95% (maximum) non-condensing
DOCUMENTATION
Instruction book
Electrical schematic
Panel Outline drawing (Optional)
