Danfoss VLT AutomationDrive FC 301 Programming Manual page 163

Parameter Descriptions
5-78 Term 27/29 Encoder Sim
Option: Function:
29 Digital Output must be set to
[54] 24V Encoder Sim.
[1] Actual Position The encoder simulation is a mirror
*
of the actual position. The output is
scaled by parameter 5-75 Term 27/29
Pulses Per Revolution related to 1
motor revolution. One motor
revolution is represented by the
number of pulses set in
parameter 5-75 Term 27/29 Pulses Per
Revolution. This means that 1 motor
revolution is represented by the
number of pulses set in
parameter 5-75 Term 27/29 Pulses Per
Revolution.
[2] Commanded The encoder simulation is a mirror
Position of the commanded position
(position setpoint for the position PI
controller). The output is scaled by
parameter 5-75 Term 27/29 Pulses Per
Revolution related to 1 motor
revolution. This means that 1 motor
revolution is represented by the
number of pulses set in
parameter 5-75 Term 27/29 Pulses Per
Revolution.
[3] Vir. Master The encoder simulation is
Position generated by the virtual master
function. The output is scaled by
parameter 5-75 Term 27/29 Pulses Per
Revolution. Virtual master speed
reference can be set by fieldbus
REF 1 or the source selected in
parameter 3-16 Reference Resource 2
relative to parameter 3-27 Virtual
Master Max Ref. Example: With
parameter 3-27 Virtual Master Max
Ref = 50 Hz and a reference of 50%
the output corresponds to a master
speed of 50 Hz * 60/min *
50% =1500 RPM. The pulse
frequency will be
parameter 5-75 Term 27/29 Pulses Per
Revolution, for example, 1024 *
1500RPM / 60 = 25.6 kHz.
Speed of the individual followers is
determined by their scaling in
parameters parameter 3-22 Master
Scale Numerator,
parameter 3-23 Master Scale
Denominator,
parameter 17-72 Position Unit
Numerator, and
M0013101
Programming Guide
5-78 Term 27/29 Encoder Sim
Option:
[4]
3.6.8 5-8* I/O Options
5-80 AHF Cap Reconnect Delay
Range:
25 s
*
3.6.9 5-9* Bus-controlled
This parameter group selects digital and relay outputs via a
fieldbus setting.
5-90 Digital & Relay Bus Control
Range:
0
*
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Function:
parameter 17-73 Position Unit
Denominator
24V encoder The encoder simulation is a mirror
32/33 of the encoder signal on terminal
32/33. The drive can be used as
repeater.
Function:
[1 - 120 s] Guarantees a minimum off-time for
the capacitors. The timer starts
once the AHF capacitor disconnects
and has to expire before the output
is allowed to be on again. It only
turns on again if the frequency
converter power is 20–30%.
Function:
[0 - This parameter holds the state of
0xFFFFFFFF ] the digital outputs and relays that
is controlled by bus.
A logical 1 indicates that the
output is high or active.
A logical 0 indicates that the
output is low or inactive.
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