53
Function:
In parameters 300 through 307,
Digital Inputs,
the functions of
terminals 16 through 33 are selected.
These options are shown in the table on the previous page.
Description of choice:
No Function
is selected if the drive is not to react to signals transmitted
to the terminal.
Reset
allows reset of the drive after a resettable fault. Not all faults can
be reset without removing and reapplying the input power. Faults that
require the removal of input power are called trip lock faults. See
Warnings and Alarms
.
Coasting Stop, Inverse
is used to release the motor immediately by
turning off the output transistors. The motor will coast freely to a stop.
Inverse indicates a closed terminal sends the stop signal. Logic 0
implements coasting to a stop.
Reset and Coasting Stop, Inverse
is used for activating coasting
stop at the same time as reset. Inverse indicates a closed terminal
sends the stop signal. Logic 0 implements coasting stop and reset.
DC Braking, Inverse
is used for stopping the motor by energizing it
with a DC voltage for a given time, as set by parameters 114 and 115.
Inverse indicates a closed terminal sends the braking signal. Logic 0
implements DC braking. See the DC braking parameters.
Safety Interlock
is the same as
Coasting Stop, Inverse
, except
Safety
Interlock
generates an alarm message on the display when terminal 27
is logic 0. The alarm message will also be active through digital outputs
42 and 45 and relay outputs 1 and 2, if programmed for
Safety
Interlock
.
Start
is selected for a remote Start/Stop command.
Logic 1 = Start.
Logic 0 = Stop.
Reversing
is used for changing the direction of rotation of the motor.
Logic 0 is for forward. Logic 1 is for reverse. The drive can be safely
reversed while it is driving the motor. The reversing signal only
changes the direction of rotation, it does not activate the start function. It
is not active in
Closed Loop
mode.
Reversing and Start
is used for Start/Stop and reversing using the
same signal. A start signal through terminal 18 starts the drive in the
forward direction. If both terminal 18 and a reversing and start terminal
are given a logic 1 at the same time, the drive will not start. It is not
active in
Closed Loop.
Freeze Reference
freezes the present reference. The frozen
reference can only be changed by means of
Speed Up
or
Speed
Down
. The frozen reference is saved after a stop command and when
power is removed.
Freeze Output
freezes the present output frequency. The frozen
output frequency can now only be changed by means of
Speed Up
or
Speed Down
.
NOTE
If
Freeze Output
is active, the drive cannot be
stopped via terminal 18.
To stop the drive when
Freeze Output
is active, one of the four
methods listed below must be used.
Turn off the
Freeze Output
function and perform a normal stop.
Press the keypad Off/Stop key.
Remove the control voltage to terminal 27.
If terminal 19 is programmed in parameter 303 for
DC Brake
Inverse
, remove the control voltage to it.
Selection of Setup, Lsb*
and
Selection of Setup, Msb**
enables
digital selection of the four possible setups. To enable this, parameter
002
Active Setup
must be set to
Multi Setup
.
Setup, Msb
Setup, Lsb
Setup 1
0
0
Setup 2
0
1
Setup 3
1
0
Setup 4
1
1
*Lsb - Least significant bit. **Msb - Most significant bit.
Preset Reference, on
is used for switching between remote controlled
reference and preset reference. This assumes that
Remote/preset
has
been selected in parameter 210,
Reference Type
. Logic 0 = remote
controlled references active; logic 1 = one of the four preset refer-
ences is active in accordance with the table below.
Preset Reference, Lsb
and
Preset reference, Msb
enables a
choice of one of the four preset references, in accordance with the table
below.
Preset ref. msb
Preset ref. lsb
Preset ref. 1
0
0
Preset ref. 2
0
1
Preset ref. 3
1
0
Preset ref. 4
1
1
Speed Up
and
Speed Down
are selected if digital control of the up/
down speed is desired. This function is only active if
Freeze Reference
or
Freeze Output
has been selected.
