Danfoss VLT 5000 Series, Instruction Manual

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pulse ref.
A signal transmitted to the digital inputs (terminal 17 or
29).
binary ref.
A signal transmitted to the serial communication port.
Ref
MIN
The smallest value which the reference signal may
have. Set in parameter 204.
Ref
MAX
The maximum value which the reference signal may
have. Set in parameter 205.
Miscellaneous:
GLCB:
Ground Leakage Circuit Breaker.
lsb:
Least significant bit.
Used in serial communication.
msb
Most significant bit.
Used in serial communication.
PID:
The PID regulator maintains the desired speed (pres-
sure, temperature, etc.) by adjusting the output fre-
quency to match the varying load.
Trip:
A state which occurs in different situations, e.g., if the
adjustable frequency drive is subjected to an overtem-
perature. A trip can be cancelled by pressing reset or,
in some cases, automatically.
Trip-locked:
A state which occurs in different situations, e.g., if the
adjustable frequency drive is subject to an overtem-
perature. A locked trip can be cancelled by cutting off
line power and restarting the adjustable frequency
drive.
Initializing:
If initializing is carried out, the adjustable frequency
drive returns to the factory setting.
Set-up:
There are four set-ups, in which it is possible to save
parameter settings. It is possible to change between
the four parameter set-ups and to edit one set-up,
while another set-up is active.
LCP:
The control panel, which makes up a complete inter-
face for control and programming of VLT 5000 Series.
The control panel is detachable and may, as an alter-
native, be installed up to 9.8 ft (3 meters) away from
the adjustable frequency drive, i.e., in a front panel, by
means of the installation kit option.
VVC
plus
If compared with standard voltage/frequency ratio con-
trol, VVC
plus
improves the dynamics and the stability,
both when the speed reference is changed and in re-
lation to the load torque.
Slip compensation:
Normally, the motor speed will be affected by the load,
but this load dependence is unwanted. The adjustable
frequency drive compensates for the slip by giving the
frequency a supplement that follows the measured ef-
fective current.
Thermistor:
A temperature-dependent resistor placed where the
temperature is to be monitored (adjustable frequency
drive or motor).
Analog inputs:
The analog inputs can be used for controlling various
functions of the adjustable frequency drive.
There are two types of analog inputs:
Current input, 0-20 mA
Voltage input, 0-10 V DC.
Analog outputs:
There are two analog outputs, which are able to supply
a signal of 0-20 mA, 4-20 mA or a digital signal.
Digital inputs:
The digital inputs can be used for controlling various
functions of the adjustable frequency drive.
Digital outputs:
There are four digital outputs, two of which activate a
relay switch. The outputs are able to supply a 24 V DC
(max. 40 mA) signal.
Brake resistor:
The brake resistor is a module capable of absorbing
the braking energy that is generated in regenerative
braking. This regenerative braking energy increases
the intermediate circuit voltage, while a brake chopper
ensures that the energy is transmitted to the brake re-
sistor.
VLT
®
5000 Series
230 MG.51.C5.22 - VLT
p
is a registered Danfoss trademark.