The Eaton Logic Controller (ELC) is Eaton
Cutler-Hammer’s latest offering into the
PLC (Programmable Logic Controller)
market. Less than half the size of a typical brick PLC, the ELC is a
micro-PLC with features previously found only in larger, much more
expensive rack-mount PLCs:
Built-in digital and analog I/O for low-cost standalone control
Local I/O expandable to 256; I/O expansion modules connect easily
with no extra wiring
Removable terminal blocks for easy wiring
2 serial ports with Modbus RTU supported on both
Real-time clock/calendar
High-speed pulse inputs and outputs
Powerful instruction set:
--- Floating point math
--- Trig functions
--- Clock/calendar instructions
--- Modbus RTU/ASCII instructions
--- High-speed pulse capture/pulse output
--- Interrupts
--- Matrix operations
--- Retentive data storage
--- Stepper motor positioning control
--- PID functions with Autotune
--- Fuzzy temperature control
With the ELC, I/O can be local or highly distributed. All of the ELC
specialty and analog modules (analog I/O, thermocouple, RTD,
motion control) are capable of remote connection via a 2-wire RS485
interface using Modbus protocol. Additional remote I/O modules are
available (see link below.)
Choose from one of 5 different controller styles:
PB models: 14 local I/O expandable to 256,
3.8K program steps, 2 serial ports
PC models: 12 local I/O expandable to 256,
7.9K program steps, 2 serial ports, clock/calendar,
2 setpoint potentiometers
PH models: 12 local I/O expandable to 256,
7.9K program steps, 2 serial ports, clock/calendar, 2 setpoint potentiometers,
100 KHz high-speed counters and pulse outputs
PA models: 10 local I/O (including analog I/O)
expandable to 256, 7.9K program steps, 2 serial ports, clock/calendar,
2 configurable 7-segment displays
PV models: 28 local I/O expandable to 512,
16K program steps, 2 serial ports, clock/calendar, 2 setpoint potentiometers,
200 KHz high-speed counters and pulse outputs
The ELC-PH12 model PLC provides high-speed pulse outputs which can
be used to drive any of Omega's step & direction stepper drives. The ELCSoft
ladder logic software has built-in step motor functions which make programming
your motion control application easy. The STM23S-2AN
is an integrated stepper drive + stepper motor which accepts pulses from a PLC. Add the ELCSoft
programming software, ELC-CBPCELC1 programming cable, and OMPS150A24
power supply for a complete motion-control system that costs less than $1000.
