Danfoss FC 300 Programming Manual page 7

FC 300 Programming Guide
Digital Inputs
The digital inputs can be used for controlling various functions of the frequency converter.
Digital Outputs
The drive features two Solid State outputs that can supply a 24 V DC (max. 40 mA) signal.
DSP
Digital Signal Processor.
ETR
Electronic Thermal Relay is a thermal load calculation based on present load and time. Its purpose
is to estimate the motor temperature.
Hiperface
Hiperface
Initialising
If initialising is carried out (par. 14-22), the frequency converter returns to the default setting.
Intermittent Duty C ycle
An intermittent duty rating refers to a sequence of duty cycles. Each cycle consists of an on-load
and an off-load period. The operation can be either periodic duty or non-periodic duty.
LCP
The Local Control Panel (LCP) makes up a complete interface for control and programming of the
FC 300 Series. The control panel is detachable and can be installed up to 3 metres from the
frequency converter, i.e. in a front panel by means of the installation kit option.
lsb
Least significant bit.
msb
Most significant bit.
MCM
Short for Mille Circular Mil, an American measuring unit for cable cross-section. 1 MCM = 0.5067
2
mm .
On-line/Off-line Parameters
Changes to on-line parameters are activated immediately after the data value is changed. Changes
to off-line parameters are not activated until you enter [OK] on the LCP.
Process PID
The PID regulator maintains the desired speed, pressure, temperature, etc. by adjusting the out-
put frequency to match the varying load.
Pulse Input/Incremental Encoder
An external, digital pulse transmitter used for feeding back information on motor speed. The en-
coder is used in applications where great accuracy in speed control is required.
RCD
Residual Current Device.
®
® is a registered trademark by Stegmann.
®
MG.33.M2.02 - VLT is a registered Danfoss trademark
1. Introduction
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