NORD Drivesystems BU0020 - Manual (Page 77)

7 Data transmission
BU 0020 GB-2612 77
7.3.5 Setpoint 1 (SW1)
The function of the 1st setpoint is set in parameter P546. The following options are available:
Setpoint frequency (16 bit)
The setpoint frequency in setpoint 1 is transferred as a 16 Bit value as standard. Setpoint 1 is
transferred to the inverter as the second word in the process data area of the order telegram.
PZD1 PZD2 PZD3 PZD4
STW SW1 SW2/3 SW2/3
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
The setpoint is transferred as a whole number with a value range of -32768 to 32767 (8000 hex to
7FFF hex). The value 16384 (4000 hex) is equal to 100%. The value C000 HEX corresponds to -
100%. A setpoint of 100% corresponds to the parameter maximum frequency (parameter P105) set
in the same parameter set.
Setpoint position (16 or 32 Bit)
Using the posicon special extension POSICON (SK XU1-POS) of the SK 700E , the absolute setpoint
position can be transferred in setpoint 1. It can be transferred as a 16 or 32 Bit value with a resolution
of 1=0.001 revolutions. In addition, the control terminals (POSICON control bits setting) can be
transferred in binary.
The SK 53xE / SK54xE version of the SK 500E series is also able to transfer positions, however
here, the 32 Bit position is divided into two 16 Bit components (Low word and High word). The
assignment of the two 16 Bit components is then carried out via appropriate parameterisation on 2
arbitrary setpoints (e.g.: SW1 and SW2).
16-Bit setpoint position setting:
As a 16 Bit value, a range of +32767 (= 32,767 revolutions) to -32768 (= -32,768 revolutions) is
possible. The 16 Bit setpoint position is transferred as the second word in the process data area (as
with the setpoint, see above)
32-Bit setpoint position setting:
As a 32 Bit value, the full position range of +/- 50000,000 revolutions is available. With the SK
700E/750E, the 32 Bit setpoint position is transferred in the area of the process data as the second
and third word. With the SK 500E in any two of the three words PZD2, PZD3, PZD4.
PZD1 PZD2 PZD3 PZD4
STW SW1, 32 Bit SW2
SK 700E/750E
POSICON
P546=3, 32bit setpoint position
SW1, 16 Bit SW2, 16 Bit SW3
SK 53xE
P546=21 (23)
Low word
P547=22 (24)
High word
P546[-01]=21
(23)
Low word
P546[-02]=22
(24)
High word
SK 54xE