Hand start [53]
Auto start [54]
DigiPot Increase [55] All
DigiPot Decrease [56] All
DigiPot Clear [57] All
Counter A (up) [60] 29, 33
Counter A (down) [61] 29, 33
Reset Counter A [62] All
Counter B (up) [63] 29, 33
Counter B (down) [64] 29, 33
Reset Counter B [65] All
Sleep Mode [66]
Reset Maintenance Word [78]
Lead Pump Start [120]
Lead Pump Alternation [121]
Pump 1 Interlock [130]
Pump 2 Interlock [131]
Pump 3 Interlock [132]
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.
All digital inputs can be programmed to these functions:
[0] No operation No reaction to signals transmitted to terminal.
[1] Reset Resets frequency converter after a TRIP/ALARM. Not all alarms can be reset.
[2] Coast inverse Leaves motor in free mode. Logic ‘0’ => coasting stop.
(Default Digital input 27): Coasting stop, inverted input (NC).
[3] Coast and reset inverse Reset and coasting stop Inverted input (NC).
Leaves motor in free mode and resets the frequency converter. Logic ‘0’ => coasting stop and reset.
[5] DC-brake inverse 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.
[6] Stop inverse 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
Torque limit & stop
[27] and connect this digital
output to a digital input that is configured as coast.
[7] External Interlock 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.
[8] Start Select start for a start/stop command. Logic ‘1’ = start, logic ‘0’ = stop.
(Default Digital input 18)
[9] Latched start Motor starts, if a pulse is applied for min. 2 ms. Motor stops when Stop inverse is activated
[10] Reversing 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
par. 4-10
Motor Speed Direction
.
(Default Digital input 19).
[11] Start reversing Used for start/stop and for reversing on the same wire. Signals on start are not allowed at the same
time.
[14] Jog Used for activating jog speed. See par. 3-11.
(Default Digital input 29)
6 How to Programme the Low Harmonic Drive
VLT AQUA Low Harmonic Drive Operating In-
structions
100 MG.20.T1.02 - VLT
®
is a registered Danfoss trademark
6
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