Approvals; Definitions; Frequency Converter; Input - Danfoss VLT AutomationDrive FC 360 Programming Manual

Introduction

1.1.4 Approvals

Illustration 1.1 Approval

1.2 Definitions

1.2.1 Frequency Converter

Coast
The motor shaft is in free mode. No torque on motor.
I
VLT, MAX
Maximum output current.
I
VLT,N
Rated output current supplied by the frequency converter.
U
VLT,MAX
Maximum output voltage.

1.2.2 Input

Control commands
Start and stop the connected motor with LCP and digital
inputs.
Functions are divided into 2 groups.
Functions in group 1 have higher priority than functions in
group 2.
Group 1 Reset, Coasting stop, Reset and Coasting stop,
Quick-stop, DC braking, Stop and the [OFF] key.
Group 2 Start, Pulse start, Reversing, Start reversing, Jog
and Freeze output
Table 1.2 Function Groups

1.2.3 Motor

Motor running
Torque generated on output shaft and speed from zero
RPM to max. speed on motor.
f
JOG
Motor frequency when the jog function is activated (via
digital terminals).
f
M
Motor frequency.
f
MAX
Maximum motor frequency.
f
MIN
Minimum motor frequency.
f
M,N
Rated motor frequency (nameplate data).
MG06C402
Programming Guide
I
M
Motor current (actual).
I
M,N
Rated motor current (nameplate data).
n
M,N
Rated motor speed (nameplate data).
n
s
Synchronous motor speed
par . 1 − 23 × 60 s
2 ×
ns =
par . 1 − 39
n
slip
Motor slip.
P
M,N
Rated motor power (nameplate data in kW or hp).
T
M,N
Rated torque (motor).
U
M
Instantaneous motor voltage.
U
M,N
Rated motor voltage (nameplate data).
Break-away torque
Torque
Illustration 1.2 Break-away Torque
η
VLT
The efficiency of the frequency converter is defined as the
ratio between the power output and the power input.
Start-disable command
A stop command belonging to the group 1 control
commands. See Table 1.2 in chapter 1.2.2 Input for more
details.
Stop command
See chapter 1.2.2 Input for details.
Danfoss A/S © Rev. 2014-03-31 All rights reserved.
Pull-out
rpm
7
1 1