1.2.4 References
Analog reference
A signal transmitted to the analog inputs 53 or 54, can be
voltage or current.
Binary reference
A signal transmitted to the serial communication port.
Preset reference
A defined preset reference to be set from -100% to +100%
of the reference range. Selection of 8 preset references via
the digital terminals.
Pulse reference
A pulse frequency signal transmitted to the digital inputs
(terminal 29 or 33).
Ref
MAX
Determines the relationship between the reference input at
100% full scale value (typically 10 V, 20 mA) and the
resulting reference. The maximum reference value is set in
parameter 3-03 Maximum Reference
.
Ref
MIN
Determines the relationship between the reference input at
0% value (typically 0 V, 0 mA, 4 mA) and the resulting
reference. The minimum reference value is set in
parameter 3-02 Minimum Reference
.
1.2.5 Miscellaneous
Analog inputs
The analog inputs are used for controlling various
functions of the frequency converter.
There are 2 types of analog inputs:
•
Current input, 0–20 mA and 4–20 mA.
•
Voltage input, 0 to +10 V DC.
Analog outputs
The analog outputs can supply a signal of 0–20 mA, or 4–
20 mA.
Automatic motor adaptation, AMA
The AMA algorithm determines the electrical parameters
for the connected motor at standstill.
Brake resistor
The brake resistor is a module capable of absorbing the
brake power generated in regenerative braking. This
regenerative brake power increases the intermediate circuit
voltage and a brake chopper ensures that the power is
transmitted to the brake resistor.
CT characteristics
Constant torque characteristics used for all applications
such as conveyor belts, displacement pumps, and cranes.
Digital inputs
The digital inputs can be used for controlling various
functions of the frequency converter.
Digital outputs
The frequency converter features 2 solid-state outputs that
can supply a 24 V DC (maximum 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.
FC standard bus
Includes RS485 bus with FC protocol or MC protocol. See
.
Initialising
If initialising is carried out (
), the frequency converter returns to the default
setting.
Intermittent duty cycle
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 makes up a complete interface for
control and programming of the frequency converter. The
control panel is detachable and can be installed up to 3 m
from the frequency converter, that is, in a front panel with
the installation kit option.
NLCP
The numerical local control panel interface for control and
programming of the frequency converter. The display is
numerical and the panel is used to show process values.
The NLCP has storing and copy functions.
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 mm
2
.
On-line/off-line parameters
Changes to on-line parameters are activated immediately
after the data value is changed. Press [OK] to activate
changes to off-line parameters.
Process PID
The PID control maintains speed, pressure, and
temperature by adjusting the output frequency to match
the varying load.
PCD
Process control data.
Power cycle
Switch off the mains until the display (LCP) is dark, then
turn power on again.
Introduction
Programming Guide
MG06C602
Danfoss A/S © 7/2015 All rights reserved.
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