The internal set point value from the reference frequency channel and the line set
point value can be guided to the ramp individually or an added variable. The setting is
done via the data set change-over capable parameter
434 Ramp set point
1 -
2 -
3 -
The reference value can be controlled on the frequency inverter via the KP500 control
unit or the VPlus program.
Note:
Internal
reference frequency
Reference
bus frequency
Reference
ramp frequency
10.2.6
In the objects PPO1 and PPO3, only the PZD2 is available for reporting of actual val-
ues. There, the actual value (actual frequency) is displayed as a standard feature. In
order to be able to display further actual values via the PZD2, the actual value is con-
trolled via the bits 12 ... 14 = IW1 ... IW3 in the control word (PZD1). This is done
regardless of the kind of controls.
28
28
Parameter
Nr.
Description
Operation mode
Internal set point
Line set point
Internal + line set
point
Ramp set point
If
value is limited to fmin. Please remember that the sign in front of fmin at
reference value = 0 is derived from the sign in front of the last line set
point value ≠ 0.
After Power on, the reference line value is limited to +fmin !
Ramp set point
For
results from the sum of internal + line set point value.
Parameter
228
282
283
Variable actual value reporting via PZD2 in PPO1 /
PPO3
Control word / State word
IW3
IW2
Bit 14
Bit 13
Bit 12
0
0
0
0
0
1
1
0
1
1
Reference value from the source percent or frequency ref-
erence value channel
Reference value from the communication interface
Reference sum of internal set point and line set point
434 = 2 (only line set point value), this reference line
434 = 3 the sign in front of the overall reference value
Actual values
Content
internal set point value from reference fre-
quency channel
line set point value from Profibus
sum of internal set point value +
line set point value
Actual value message
IW1
Content PZD2 actual value
0
Actual frequency (stator or sensor frequency)
1
Abs. current (r.m.s current)
0
Active current or torque-forming current
1
Warning (bit-coded, see Annex)
0
Fault (see Annex)
Ramp set point
434.
Setting
Min.
Max.
1
3
Function
xxx.xx Hz
xxx.xx Hz
xxx.xx Hz
Fact. sett.
3
Format
06/05
06/05
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