The EDC220 and EDC580 electronics from DOLI are powerful and cost effective systems especially designed for data acquisition and closed loop control of testing instruments. The EDC220/580 systems technically succeed the well established EDC Family, starting with EDC5, EDC25 and EDC100 up to EDC60 and EDC120.

EDC220

The EDC220 is designed for static testing instruments. All measuring channels for a basic testing instrument, as well as an output channel to control an actuator, are on board. The EDC220 is extendable by two options for e.g. extensometer. The on-board load channel of the EDC220 has a resolution of ±180,000 steps.

The EDC220 fits for:

• screw driven instruments. The EDC220 has a load channel with a resolution of ±180,000 steps and an incremental position channel with a controlled ±10 Volt output for power amplifiers.

• hydraulic instruments with a valve driven with ±10 Volt. The EDC220 has a load channel with a resolution of ±180,000 steps and an incremental and SSI position channel with controlled ±10V output for valves.

• further load cells, LVDTs, strain gauges, extensometers, 2 channel incremental extensometers, serial controlled extensometers, safety screens, further I/Os, synchronising several EDCs in a multi channel application. For these applications further options are needed!

EDC222

Basically, the EDC222 corresponds with the EDC220 in technical therms. However, it has a desk top case as the EDC580 and therefore, is available with display and keyboard and with the same drive variations as the EDC580.

EDC580

The EDC580 is designed for static and dynamic testing instruments. Eight general purpose I4-option slots are on board.

The EDC580 fits for:

• screw driven instruments with a specially adapted DOLI power amplifier for DC-servo motors. For servo motors with 160 or 320 Watt, integrated as well as external amplifiers will be used. For servo motors with 1000 or 2500 Watt, external amplifiers will be used.

• screw driven instruments with any power amplifier. They are driven by a ±10 Volt or digital command output. All necessary control signals to drive an external power amplifier are provided.

• hydraulic instruments, which are driven by a ±10 Volt powered valve.

• hydraulic instruments, which are driven by a servo-valve.

• dynamic instruments, which are driven either hydraulically / pneumatically by a servo-valve or by a linear motor.

• further load cells, LVDTs, strain gauges, extensometers, 2 channel incremental extensometers, serial controlled extensometers, safety screens, further I/Os, synchronising several EDCs in a multi channel application. For these applications further options are needed!