Bit
Bit = 0
Bit =1
00
Preset ref. lsb
01
Preset ref. msb
02
DC braking
03
Coasting stop
04
Quick stop
05
Freeze outp. freq.
06
Ramp stop
Start
07
Reset
08
Jog
09
Ramp 1
Ramp 2
10
Data not valid
Data valid
11
No function
Relay 01 activated
12
No function
Digital output
Terminal 46
activated
13
Select Setup, lsb
14
Select Setup, msb
15
Reversing
Bit 00/01:
Bit 00/01 is used to select between the two pre-pro-
grammed references (parameters 215-218
Preset ref-
erence
) according to the following table:
Preset ref.
Parameter
Bit 01
Bit 00
1
215
0
0
2
216
0
1
3
217
1
0
4
218
1
1
NB!
In parameter 508
Selection of preset ref-
erence
a selection is made to define how
Bit 00/01 gates with the corresponding
function on the digital inputs.
Bit 02, DC brake:
Bit 02 = '0' causes DC braking and stop. Brake voltage
and duration are preset in parameters 132
DC brake
voltage
and parameter 126
DC braking time
. Note: In
parameter 504
DC brake
a selection is made to define
how Bit 02 gates with the corresponding function on a
digital input.
Bit 03, Coasting stop:
Bit 03 = '0' causes the frequency converter to imme-
diately "let go" of the motor (the output transistors are
"shut off"), so that it coasts to a standstill.
Bit 03 = '1' causes the frequency converter to be able
start the motor if the other starting conditions have
been fulfilled. Note: In parameter 502
Coasting stop
a
selection is made to define how Bit 03 gates with the
corresponding function on a digital input.
Bit 04, Quick stop:
Bit 04 = '0' causes a stop, in which the motor's speed
is ramped down to stop via parameter 212
Quick stop
ramp-down time
.
Bit 05, Freeze output frequency:
Bit 05 = '0' causes the present output frequency (in Hz)
to freeze. The frozen output frequency can now only
be changed by means of the digital inputs program-
med to
Speed up
and
Speed down
.
NB!
If
Freeze output
is active, the frequency
converter cannot be stopped via Bit 06
Start
or via a digital input. The frequency
converter can only be stopped by the fol-
lowing:
•
Bit 03 Coasting stop
•
Bit 02 DC braking
•
Digital input programmed to
DC
braking
,
Coasting stop
or
Reset
and coasting stop
.
Bit 06, Ramp stop/start:
Bit 06 = '0' causes a stop, in which the motor's speed
is ramped down to stop via the selected
ramp down
parameter.
Bit 06 = '1' causes the frequency converter to be able
to start the motor, if the other starting conditions have
been fulfilled. Note: In parameter 505
Start
a selection
is made to define how Bit 06 Ramp stop/start gates
with the corresponding function on a digital input.
Bit 07, Reset:
Bit 07 = '0' does not cause a reset.
Bit 07 = '1' causes the reset of a trip. Reset is activated
on the signal's leading edge, i.e. when changing from
logic '0' to logic '1'.
Bit 08, Jog:
Bit 08 = '1' causes the output frequency to be deter-
mined by parameter 213
Jog frequency
.
Bit 09, Selection of ramp 1/2:
Bit 09 = “0” means that ramp 1 is active (parameters
207/208). Bit 09 = “1” means that ramp 2 (parameters
209/210) is active.
Bit 10, Data not valid/Data valid:
Is used to tell the frequency converter whether the
control word is to be used or ignored. Bit 10 = '0' cau-
ses 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,
116
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