XP[N] - Extra Parameters
Purpose:
Includes system parameters, not commonly changed by the user, which enable the drive
to be adapted to special situations.
Index Value Range Meaning
0 Reserved.
1 [BV/16 … BV] XP[1] defines over/under voltage threshold.
Over voltage is activated at XP[1] volts.
Under voltage is activated at XP[1]/8 volts.
2 [0…4] PWM Fast Medium Slow mode.
0 – Medium switching frequency, PWM switch once per
sampling time (TS)
1 – Slow switching frequency, PWM switches every two
sampling time.
2..4- Fast switching frequency, PWM switches XP[2] times
per sampling time
3 Reserved
4 [10…32,760] Filter constant of bus voltage measurements.
5 [0…12,000] Limiter for input filter of current loop.
6 [0…2,147,483,647] Low-pass constant for input filter of current loop.
7 [0…8000] Maximum counter value for Hall/encoder mismatch. If
value is 0, no Hall/encoder mismatch check occurs.
8, 9 Reserved.
Table 3-55: XP[N] Entries and Values
Notes:
Changing XP[1] or XP[2] requires a retuning of the current controller parameters.
For the Cello and Trumpet under-voltage is activated at 0.18*BV
When XP[2] is higher than 1, excessive PWM switching frequency occurs. In this
case the drive’s maximum allowed current saturation (PL[1]) is reduced. The
amount of reduction depend upon the XP[2] value, the maximum bus voltage
threshold setting (XP[1]), the type of drive, and the maximum allowed current
(MC). To find out the actual maximum stall current threshold, use WS[34]. Use
WS[33] to find out the actual peak current saturation.
Attributes: Type: Parameter, Integer
Source: Program, RS-232, CANopen
Restrictions: MO=0
Default values: XP[1]=BV, XP[2]=0, XP[4]=30720, XP[5]=1000
XP[6]=12000, XP[7]=0
Range: Previous table
Unit modes: All
Activation: Immediate
SimplIQ Command Reference Manual Alphabetical Listing
MAN-SIMCR (Ver. 4.5)
3-163
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