Danfoss VLT AutomationDrive FC 300 Design Manual page 164

9. RS-485 Installation and Set-up
Quick stop using the ramp time of par. 3-81
When bit 04 = "0", a quick stop occurs.
When bit 04 = "1", the frequency converter can start if the other start conditions are satisfied.
Bit 05, Hold frequency output/Use ramp
When bit 05 = "0", the current output frequency is being maintained even if the reference value
is modified.
When bit 05 = "1", the frequency converter can perform its regulating function again; operation
occurs according to the respective reference value.
Bit 06, Ramp stop/Start
Normal ramp stop using the ramp times of the actual ramp as selected. In addition, activation of
the output relay 01 or 04 if the output frequency is 0 Hz if Relay 123 has been selected in par.
5-40
start if the other start conditions are satisfied.
9
Bit 07, No function/Reset
Reset after switching off.
Acknowledges event in fault buffer.
When bit 07 = "0", no reset occurs.
When there is a slope change of bit 07 to "1", a reset occurs after switching off.
Bit 08, Jog 1 OFF/ON
Activation of the pre-programmed speed in par. 8-90
bit 04 = "0" and bit 00 - 03 = "1".
Bit 09, Jog 2 OFF/ON
Activation of the pre-programmed speed in par. 8-91
bit 04 = "0" and bit 00 - 03 = "1".
Bit 10, Data invalid/valid
Is used to tell the frequency converter whether the control word is to be used or ignored. Bit 10
= "0" causes the control word to be ignored, Bit 10 = "1" causes the control word to be used.
This function is relevant, because the control word is always contained in the telegram, regardless
of which type of telegram is used, i.e. it is possible to turn off the control word if you do not wish
to use it in connection with updating or reading parameters.
Bit 11, No function/Slow down
Is used to reduce the speed reference value by the amount given in par. 3-12
down
the reference value is reduced.
Bit 12, No function/Catch up
164
NB!
The selection in par. 8-51
corresponding function of the digital inputs.
Function relay
. Bit 06 = "0" leads to a stop. When bit 06 = "1", the frequency converter can
NB!
The selection in par. 8-53
responding function of the digital inputs.
value. When bit 11 = "0", no modification of the reference value occurs. When bit 11 = "1",
MG.33.B9.02 - VLT
Quick stop ramp time
.
Quick stop select
determines how bit 04 is linked with the
Start select
determines how bit 06 is linked with the cor-
Bus Jog 1 speed
Bus Jog 2 speed
® is a registered Danfoss trademark
FC 300 Design Guide
. JOG 1 is only possible if
. JOG 2 is only possible if
Catch up/slow