Danfoss VLT AQUA Operating Instructions Manual page 100

6 How to Programme the Low Harmonic Drive
Hand start
Auto start
DigiPot Increase
DigiPot Decrease
DigiPot Clear
Counter A (up)
Counter A (down)
Reset Counter A
Counter B (up)
Counter B (down)
Reset Counter B
Sleep Mode
Reset Maintenance Word
Lead Pump Start
Lead Pump Alternation
Pump 1 Interlock
Pump 2 Interlock
Pump 3 Interlock
All = Terminals 18, 19, 27, 29, 32, X30/2, X30/3, X30/4. X30/ are the terminals on MCB 101.
Functions dedicated to only one digital input are stated in the associated parameter.
6
All digital inputs can be programmed to these functions:
[0] No operation
[1] Reset
[2] Coast inverse
[3] Coast and reset inverse
[5] DC-brake inverse
[6] Stop inverse
[7] External Interlock
[8] Start
[9] Latched start
[10] Reversing
[11] Start reversing
[14] Jog
100
[53]
[54]
[55]
[56]
[57]
[60]
[61]
[62]
[63]
[64]
[65]
[66]
[78]
[120]
[121]
[130]
[131]
[132]
No reaction to signals transmitted to terminal.
Resets frequency converter after a TRIP/ALARM. Not all alarms can be reset.
Leaves motor in free mode. Logic '0' => coasting stop.
(Default Digital input 27): Coasting stop, inverted input (NC).
Reset and coasting stop Inverted input (NC).
Leaves motor in free mode and resets the frequency converter. Logic '0' => coasting stop and reset.
Inverted input for DC braking (NC).
Stops motor by energizing it with a DC current for a certain time period. See par. 2-01 to par. 2-03.
The function is only active when the value in par. 2-02 is different from 0. Logic '0' => DC braking.
Stop Inverted function. Generates a stop function when the selected terminal goes from logical level
'1' to '0'. The stop is performed according to the selected ramp time (par. 3-42 and par. 3-52.
NB!
When the frequency converter is at the torque limit and has received a stop
command, it may not stop by itself. To ensure that the frequency converter stops,
configure a digital output to
output to a digital input that is configured as coast.
Same function as Coasting stop, inverse, but External Interlock generates the alarm message 'ex-
ternal fault' on the display when the terminal which is programmed for Coast Inverse is logic '0'.
The alarm message will also be active via digital outputs and relay outputs, if programmed for
External Interlock. The alarm can be reset using a digital input or the [RESET] key if the cause for
the External Interlock has been removed. A delay can be programmed in par. 22-00, External In-
terlock Time. After applying a signal to the input, the reaction described above will be delayed with
the time set in par. 22-00.
Select start for a start/stop command. Logic '1' = start, logic '0' = stop.
(Default Digital input 18)
Motor starts, if a pulse is applied for min. 2 ms. Motor stops when Stop inverse is activated
Changes direction of motor shaft rotation. Select Logic '1' to reverse. The reversing signal only
changes the direction of rotation. It does not activate the start function. Select both directions in
Motor Speed Direction .
par. 4-10
(Default Digital input 19).
Used for start/stop and for reversing on the same wire. Signals on start are not allowed at the same
time.
Used for activating jog speed. See par. 3-11.
(Default Digital input 29)
®
MG.20.T1.02 - VLT is a registered Danfoss trademark
VLT AQUA Low Harmonic Drive Operating In-
All
All
All
29, 33
29, 33
All
29, 33
29, 33
All
Torque limit & stop [27] and connect this digital
structions