Danfoss VLT 5000 Series Operating Instructions

VLT
®
5000 Series
Programming
VLT 5122-5552, 380-500 V and VLT 5042-5602,
525-690 V work with a reduced DC current rated
as 80% of I
VLT,N
at 110% overload.
125 DC braking current
(DC BRAKE CURRENT)
Value:
✭ 50 %
Function:
This parameter is used for setting the DC brake
current that is activated upon a stop when the DC
brake frequency set in parameter 127 has been
reached, or if the DC brake inverse is active via digital
terminal 27 or via a serial communication port. The
DC braking current will be active for the duration of
the DC braking time set in parameter 126.
NB!:
The maximum value depends on the rated
motor current. If the DC braking current
is active, the frequency converter has a
switching frequency of 4.5 kHz.
Description of choice:
To be set as a percentage value of the rated motor
current I
M,N
set in parameter 105.
100% DC braking current corresponds to I
M,N
.
Warning: 100 % supply for too long
may damage the motor.
VLT 5122-5552, 380-500 V and VLT 5042-5602,
525-690 V work with a reduced DC current rated
as 80% of I
VLT,N
at 110% overload.
126 DC braking time
(DC BRAKING TIME)
Value:
0.0 (OFF) - 60.0 sec.
✭ 10.0 sec.
Function:
This parameter is for setting the DC braking time
for which the DC braking current (parameter
125) is to be active.
Description of choice:
Set the desired time.
127 DC brake cut-in frequency
(DC BRAKE CUT-IN)
Value:
0.0 - parameter 202
✭ 0.0 Hz (OFF)
Function:
This parameter is for setting the DC brake cut-in
frequency at which the DC braking current (parameter
125) is to be active, in connection with a stop command.
Description of choice:
Set the desired frequency.
128 Motor thermal protection
(MOT.THERM PROTEC)
Value:
✭No protection (NO PROTECTION)
[0]
Thermistor warning (THERMISTOR WARN)
[1]
Thermistor trip (THERMISTOR TRIP)
[2]
ETR Warning 1 (ETR WARNING1)
[3]
ETR Trip 1 (ETR TRIP1)
[4]
ETR Warning 2 (ETR WARNING2)
[5]
ETR Trip 2 (ETR TRIP2)
[6]
ETR Warning 3 (ETR WARNING3)
[7]
ETR Trip 3 (ETR TRIP3)
[8]
ETR Warning 4 (ETR WARNING 4)
[9]
ETR Trip 4 (ETR TRIP4)
[10]
Function:
The frequency converter is able to monitor the motor
temperature in two different ways:
- Via a thermistor sensor connected to one
of the analogue inputs, terminals 53 and 54
(parameters 308 and 311).
- Calculation of the thermal load, based on the
current load and the time. This is compared with
the rated motor current I
M,N
andtheratedmotor
frequency f
M,N
. The calculations made take into
account the need for a lower load at lower speeds
because of less cooling from the fan.
ETR functions 1-4 do not start calculating the load
until there is a switch-over to the Setup in which
they were selected. This enables the use of the
ETR function, even where two or several motors
alternate. For the North American market: The ETR
functions provide class 10 or 20 motor overload
protection in accordance with NEC.
Description of choice:
Select No protection if no warning or tripping is
required when the motor is overloaded.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A9.02 - VLT is a registered Danfoss trademark
111

Danfoss VLT 5000 Series Specifications

General

Brand	Danfoss
Model	VLT 5000 Series
Category	DC Drives
Language	English