Schneider Electric 17S Series User Manual

12

The acronyms and abbreviations used in this manual are identified and defined in 
the table below.

Continued on next page

CE

European Community (EC)

CLK

Clock signal

COM

Serial communication interface for a PC-AT

cUL

Underwriters Laboratory (Canada)

DIN

German Institute for Norming

Disk

Magnetic storage (diskette, hard disk)

EEPROM

Electrically erasable programmable read only memory

EMC

Electromagnetic compatibility

EMI

Electromagnetic Interference

EN

European norm

ESD

Electrostatic discharge

IEC

International Electrotechnical Commission

IGBT

Insulated Gate Bipolar Transistor

ISO

International Standardization Organization

LED

Light Emitting Diode

MB

Megabyte

MS-DOS

Microsoft Disk Operating System for PC-AT

PC-AT

Personal computer in AT configuration

PELV

Protected extra low voltage

PWM

Pulse-width modulation

RAM

Random Access Memory (volatile)

Regen

Regen resistor

RBext

External Regen resistor

RBint

Internal Regen resistor

RFI

Radio Frequency Interference