Danfoss VLT HVAC FC 100, Руководство по обслуживанию, Страница: 33 / 220

Freeze output request
A freeze output command has been given, but the motor will remain stopped until a
Run permis-
sive
signal is received via a digital input.
Freeze Ref.
Freeze Ref. was chosen as a function for a digital input (parameter group 5-1*). The corresponding
terminal is controlled. The adjustable frequency drive saves the actual reference. Changing the
reference is now only possible via terminal functions Speed up and Slow.
Jog request
A JOG command has been given, but the motor will be stopped until a
Run permissive
signal is
received via a digital input.
Jogging
The motor is running with par. 3-19
Jog Speed [RPM]
.
1. Jog was selected as function for a digital input (parameter group 5-1*). The correspond-
ing terminal (e.g., Terminal 29) is active.
2. The Jog function is activated via the serial communication.
3. The Jog function was selected as a reaction for a monitoring function (e.g., No signal).
The monitoring function is active.
Kinetic backup
In par. 14-10
Line Failure
, a function was set as kinetic backup. The AC line voltage is below the
value set in par. 14-11 Line Voltage at Line Fault . The adjustable frequency drive is running the
motor momentarily with kinetic energy from the inertia of the load.
Motor check (FC 100/200 only)
In par. 1-80
Function at Stop
, the function Motor check was selected. A stop command (e.g. Stop
inverse) is active. To ensure that a motor is connected to the adjustable frequency drive, a per-
manent test current is applied to the motor.
Off1
PROFIDrive profile
was selected in par. 8-10
Control Word Profile
. The OFF 1 function is activated
via serial communication. The motor is stopped via the ramp.
Off2
PROFIDrive profile
was selected in par. 8-10
Control Word Profile
. The OFF 2 function is activated
via serial communication. The output of the adjustable frequency drive is disabled immediately
and the motor coasted.
Off3
PROFIDrive profile
was selected in par. 8-10
Control Word Profile
. The OFF 3 function is activated
via serial communication. The motor is stopped via the ramp.
Over Voltage Control (OVC)
Overvoltage Control is activated in par. 2-17 Over-voltage Control . The connected motor is sup-
plying the adjustable frequency drive with generative energy. The Overvoltage Control adjusts the
U/F ratio to run the motor in controlled mode and to prevent the adjustable frequency drive from
tripping.
PowerUnit Off
Only with adjustable frequency drives with installed option (ext. 24 V supply). The line power
supply to the adjustable frequency drive is cut off, but the control card is still supplied with 24 V.
Pre-magnetize
Pre-magnetization is selected in par. 1-80
Function at Stop
. A stop command (e.g. Stop inverse)
is activated. A suitable constant magnetizing current is applied to the motor.
2 Operator Interface and Adjustable Frequen-
cy Drive Control
High Power Service Manual for VLT
®
FC Series
Adjustable Frequency Drives
2-10
MG.90.L1.22 - VLT ® is a registered Danfoss trademark
2