NORD Drivesystems BU0070 User Manual
Page 26
NORDAC InterBus Operating Manual
26
Subject to technical alterations
BU 0070 GB
6.1.4 Second and third setpoint (SW2/3)
If the PPO type 2 or 4 is used, in addition to setpoint 1, a 2
nd
setpoint can be transferred in word PZD4 and a 3
rd
setpoint in PZD3.
PZD1 PZD2 PZD3 PZD3
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 PZD3
STW
SW1
SW2
The second and third setpoints are always 16 Bits. The function of the second and third setpoints can be set in the
inverter with parameter P547 ‘Setpoint 2 function’ and P548 ‘Setpoint 3 function’ respectively.
Both setpoints are transferred as whole numbers in the range -32768 to 32767. The value 16384 (4000 HEX) is
equal to 100%. The value C000 HEX is equal to –100%, so setpoints in the range –200% to +200% can be
transferred. A setpoint of 100% corresponds to the respective nominal size:
Setting
100% equals
Off
Setpoint frequency, actual frequency PID, actual
frequency PID limited, actual frequency PID
monitored, frequency addition, frequency
subtraction, maximum frequency
Maximum frequency
Torque current limit
Torque current limit (P112)
Current limit
Inverter nominal current
Servo mode torque
Nominal torque
Torque precontrol
Torque precontrol (P214)
In addition, PosiCon control bits can be transferred here (see setpoint 1)
6.1.5 The actual value 1 (IW1)
The actual frequency , i.e. the actual output frequency of the inverter, is transferred as a 16 Bit value as standard.
The actual value 1 is transferred to the master in the inverter response telegram as the second word in the process
data area.
PZD1 PZD2 PZD3 PZD3
ZSW
IW1
IW3
IW2
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
The actual value 1 is transferred as a whole number in the range -32768 to 32767. In addition to the actual
frequency, other actual inverter values can be transferred. The setting is made in P543 'Actual value 1 function'.
The settings ‘Actual frequency’, ‘Actual speed’, ‘Current’ and ‘Torque current’ are transferred as percentages of the
respective nominal sizes. The value 16384 (4000 HEX) is equal to 100%. The value C000 HEX is equal to -100%.
Actual values in the range –200% to +200% can be transferred.