Definitions
VLT:
I
VLT,MAX
The maximum output current.
I
VLT,N
The rated output current supplied by the frequency
converter.
U
VLT MAX
The maximum output voltage.
Output:
l
M
The current transmitted to the motor.
U
M
The voltage transmitted to the motor.
f
M
The frequency transmitted to the motor.
f
JOG
The frequency transmitted to the motor when the jog
function is activated (via digital terminals or the key-
pad).
f
MIN
The minimum frequency transmitted to the motor.
f
MAX
The maximum frequency transmitted to the motor.
Break-away torque:
η
VLT
The efficiency of the frequency converter is defined as
the ratio between the power output and the power in-
put.
Input:
Control command:
By means of LCP and the digital inputs, it is possible
to start and stop the connected motor.
Functions are divided into two groups, with the follow-
ing priorities:
Group 1
Reset, Coasting stop, Reset and
Coasting stop, Quick-stop, DC
braking, Stop and the "Stop" key.
Group 2
Start, Pulse start, Reversing, Start
reversing, Jog and Freeze output
Group 1 functions are called Start-disable commands.
The difference between group 1 and group 2 is that in
group 1 all stop signals must be cancelled for the motor
to start. The motor can then be started by means of a
single start signal in group 2.
A stop command given as a group 1 command results
in the display indication STOP.
A missing stop command given as a group 2 command
results in the display indication STAND BY.
Start-disable command:
A stop command that belongs to group 1 of the control
commands - see this group.
Stop command:
See Control commands.
Motor:
I
M,N
The rated motor current (nameplate data).
f
M,N
The rated motor frequency (nameplate data).
U
M,N
The rated motor voltage (nameplate data).
P
M,N
The rated power delivered by the motor (nameplate
data).
n
M,N
The rated motor speed (nameplate data).
T
M,N
The rated torque (motor).
References:
preset ref.
A firmly defined reference which can be set from
-100% to +100% of the reference range. There are four
preset references, which can be selected via the digital
terminals.
analogue ref.
A signal transmitted to input 53, 54 or 60. Can be volt-
age or current.
VLT
®
5000 Design Guide
128
MG.52.B2.02 - VLT
®
is a registered Danfoss trademark
