Siemens SINAMICS G130 - Page 391

Functions, monitoring, and protective functions
9.2 Drive functions
Inverter chassis units
Operating Instructions, 07/2016, A5E00331449A
391
The switch-on level of the Vdc_max control (r1242 or r1282) is calculated as follows:
● when the automatic switch-on level sensing is disabled (p1254 (p1294) = 0)
– ACAC device: r1242 (r1282) = 1.15 x √2 x p0210 (device supply voltage)
– DCAC device: r1242 (r1282) = 1.15 x p0210 (device supply voltage)
● when the automatic switch-on level sensing is enabled (p1254 (p1294) = 1)
r1242 (r1282) = Vdc_max - 50 V (Vdc_max: overvoltage threshold of the converter)
Function diagram
FP 6220 (FP 6320)
Vdc_max controller and Vdc_min controller
Parameter
•
p1240 (p1280)
Vdc controller or Vdc monitoring configuration
•
r1242 (r1282)
Vdc_min controller switch
-in level
•
p1243 (p1283)
Vdc_max controller dynamic factor
•
p1245 (p1285)
Vdc_min controller switch
-on level (kinetic buffering)
•
r1246 (r1286)
Vdc_min controller switch
-on level (kinetic buffering)
•
p1247 (p1287)
Vdc_min controller dynamic factor (kinetic buffering)
•
(p1288)
Vdc_max controller ramp
-function generator feedback factor (V/f)
•
p1249 (p1289)
Vdc_max controller speed threshold
•
p1250 (p1290)
Vdc controller proportional gain
•
p1251 (p1291)
Vdc controller integral action time
•
p1252 (p1292)
Vdc controller derivative
-action time
•
(p1293)
Vdc_min controller outp
ut limit (V/f)
•
p1254 (p1294)
Vdc_max controller automatic ON level detection
•
p1255 (p1295)
Vdc_min controller time threshold
•
p1256 (p1296)
Vdc_min controller response (kinetic buffering)
•
p1257 (p1297)
Vdc_min controller speed threshold
•
r1258 (r1298)
V
dc controller output