Siemens D7-SYS - Page 473

Closed-loop thyristor current control
System- and communication configuring D7-SYS - SIMADYN D 5-33
Edition 06.2002
The inverter stability limit calculation is disabled with XF2=0.0.
If the function is required, the connections must be established to FB–
CPI.CLU and FB–PC6.AWS.
CAV. Significance Value\connection
AD
Hardware address
RRC
Rated DC current of the SITOR set [A]
Condition: RRC
≥ ARC, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 0.0)
ARC
Rated system/motor current [A]
Condition: RRC
≥ ARC ≠ 0, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 0.0)
NF
Normalization of the current actual value at YC
NF= 1 (YC = normalized value),
NF= ARC (YC = absolute value)
Condition: NF > 0, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 1.0)
XFO
Offset calibration of the V/f conversion frequency [kHz]
calibration: XF0 =
- YFO! Value measured at I=0 A!
Condition: -6 kHz
≤ XFO ≤ 6 kHz, otherwise, QSF\bit12=1
(max. 10% of the rated frequency)
(Initialization connection/
default: 0.0)
{
≥-6.0…+6.0≤}
XF2 Current-dependent inverter stability limit [1]
XF2 corresponds to the “inductive voltage drop” of the converter.
XF2=0 %
⇒ stability limit calculation disabled.
This intervention is not required for standard applications.
Condition: 0.0
≤ XF2 ≤ 0.2, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 0.0)
{
≥0.0…0.2≤}
IAV
Correction for the stability limit [1]
Line supply changes can be taken into account here. The
bandwidth always decreases with CAV.XF2
⇒ 0. Line supply
changes can be taken into account here.
Condition: 0.7
≤ IAV ≤ 1.3, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 1.0)
{
≥0.7…1.3≤}
AL1 Positive correction of the gain, current actual value sensing
Condition: -0.1
≤ AL1 ≤ 0.1, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 0.0)
AL2 Negative correction of the gain, current actual value sensing
Condition: -0.1
≤ AL2 ≤ 0.1, otherwise, QSF\bit 12 = 1
(Initialization connection/
default: 0.0)
CX1 Max. current for torque direction M1 (absolute value)
(observe the normalization!)
(Default: 0.1)
CX2
Max. current for torque direction M2 (absolute value)
(observe the normalization!)
(Default: 0.1)
IM1
Torque direction M1 operational ⇒ “+” = CX1 is used. SOL.Q01 → CAV.IM1
IM2
Torque direction M2 operational ⇒ “-“ = CX2 is used. SOL.Q02 → CAV.IM2
ACI
Handshake from the EMF block
EMF.ACO
→ CAV.ACI

YC
Current actual value (with sign)
CAV.YC
→ CPI.XC
→ SOL.XC
→ EMF.XC
(Default: 0.0)
Comment
I/O