Danfoss VLT FC 102 Programming Manual page 150

Programming Guide | VLT® HVAC Drive FC 102
Table 22: Digital Inputs, Function Descriptions - 1
Option
[7] External interlock
[8] Start
[9] Latched start
[10] Reversing
[11] Start reversing
[14] Jog
[15] Preset reference on
[16] Preset ref bit 0
[17] Preset ref bit 1
[18] Preset ref bit 2
Table 23: Preset Reference Bit
Preset ref. bit
Preset ref. 0
Preset ref. 1
Preset ref. 2
Preset ref. 3
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(continued)
2
0
0
0
0
Functions
Same function as coasting inverse and stop inverse, but this op-
tion generates the alarm message External fault on the display
when the terminal programmed for coast inverse has signal 0.
The alarm message is also active via digital outputs and relay
outputs if programmed for external interlock. When the exter-
nal interlock is removed, the alarm can be reset using a digital in-
put or the [Reset] key. A delay can be programmed in parameter
22-00 External Interlock Delay. After applying a signal to the
input, the reaction described above is delayed with the time set
in parameter 22-00 External Interlock Delay.
(Default digital input 18): Select start for a start/stop command.
Logic 1 = start, logic 0 = stop.
If a pulse is applied for minimum 2 ms, the motor starts. The mo-
tor stops when stop inverse is activated, or a reset command (via
DI, bur, or LCP) is given.
(Default digital input 19): Change the direction of the 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 parameter 4-10 Motor Speed
Direction.
Used for start/stop and for reversing on the same wire. Signals on
start are not allowed at the same time.
(Default digital input 29): Activate jog speed. See parameter 3-11
Jog Speed [Hz].
Shift between external reference and preset reference. It is as-
sumed that [1] External/preset has been selected in parameter
3-04 Reference Function. Logic 0 = external reference active; logic
1 = 1 of the 8 preset references is active.
Preset reference bit 0, 1, and 2 enable a choice between 1 of the
8 preset references according to
Same as [16] Preset ref bit 0.
Same as [16] Preset ref bit 0.
1
0
0
1
1
Parameter Descriptions
Table 23.
0
0
1
0
1
AU430028034214en-001901 / 130R0310