Manual

NORD USS and Modbus RTU Manual
34 Subject to technical amendments BU 0050 GB-3111
1.5.3.6 Second and third setpoint (SW2/3)
With the SK 500E, the assignment of setpoints 2 and 3 to the process data words PZD3 and PZD4 is carried
out in the opposite manner to the SK 300E/700E/750E series.
Second and third setpoint SK 300E/SK 700E/SK 750E(SW2/3)
If the PPO type 2 or 4 is used, in addition to setpoint 1, a 2nd setpoint can be transferred in word PZD4 and
a 3rd setpoint in PZD3.
PZD1
PZD2
PZD3
PZD4
STW
SW1
SW3
SW2
A third setpoint value can only be transferred if a 32 Bit setpoint value is not transferred in the first setpoint.
PZD1
PZD2
PZD3
PZD4
STW
SW1
SW2
The second and third setpoints are always 16 Bit. The function of the second and third setpoints can be set
in the inverter with parameter P547 „'Setpoint function 2‟ and P548 „'Setpoint function 3‟ respectively.
Both setpoints are transferred as whole numbers in the range (-32768 to 32767). The value 16384 (4000
HEX) corresponds to 100%. The value C000 HEX is equal to –100%, so that setpoints in the range
–200% to +200% can be transferred. A setpoint of 100% corresponds to the respective nominal value:
Setting
100% is equal to
Off
Setpoint frequency, actual frequency PID, actual
frequency PID limited, actual frequency PID monitored,
frequency addition, frequency subtraction, maximum
frequency
Maximum frequency (P105)
Torque current limit
Torque current limit (P112)
Current limit
Inverter rated current
Servo mode torque
Nominal torque (P112)
Lead torque
Lead torque (P214)
In addition, POSICON control bits can be transferred here (see setpoint 1)