49
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 “List
of Warnings and Alarms” table in the back of this manual.
Coasting Stop, Inverse is used to release the motor immediately by
turning off the output transistors. The motor will coast freely to a stop.
Logic ‘0’ implements coasting to a stop.
Reset and Coasting Stop, Inverse is used for activating coasting
stop at the same time as reset. 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.
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.
WARNING
!
Do not choose
Safety Intelock for drives with
software version 1.03. See parameter 624 to
determine software version of drive.
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 directrion. 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.
WARNING
!
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 prameter 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.
