Lenze 8400 HighLine - Manual (Page 1402)

17 Function library
17.1 Function blocks
1402
Lenze · 8400 HighLine · Referenzhandbuch · DMS 10.0 EN · 06/2014 · TD05/TD14
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17.1.102.4 Parameterising the mains failure control
The parameters to be set before initial commissioning strongly depend on the used motor, the
moment of inertia of the drive and the drive configuration (single drive, drive system, master/slave
operation etc.) and must hence be adapted to the corresponding application case.
1. Measure the DC-bus voltage with an oscilloscope (channel 1).
Option 1: With a corresponding voltage divider at the terminals +UG, -UG.
Option 2: At the analog output terminals X3/O1U and X3/GA
• For this purpose, adapt the signal flow in order that the DC-bus voltage is provided via the
analog output 1: Go to the application level and connect the nDCVoltage_a signal of the
SB LS_MotorInterface to a free output of the application block (e.g. wFreeOut1). Then connect
this output in the IO level to the nOut1V_a input of the SB LS_AnalogOutput .
2. Measure the speed with an oscilloscope (channel 2) at the analog output terminals X3/O2U and
X3/GA.
• For this purpose, adapt the signal flow in order that the speed is provided via the analog
output 2: Go to the application level and connect the nMotorSpeedAct_a signal of the
SB LS_MotorInterface to a free output of the application block (e.g. wFreeOut2). Then connect
this output in the IO level to the nOut2V_a input of the SB LS_AnalogOutput .
3. Set the operating threshold for the mains failure control in C00476/1 .
• Scaling: 100 % ≡ 1000 V
• Recommended setting: approx. 50 V above the reset threshold for undervoltage in the DC
bus (LU
off
).
• The operating thresholds for undervoltage (LU) and overvoltage (OU) depend on the setting
in C00173 :
4. Set the voltage setpoint in C00476/2 the DC-bus voltage is to be controlled to.
• Scaling: 100 % ≡ 1000 V
• Recommended setting: approx. 700 V 
C00476/2 = 70 %

Note!
The following data refers to the chapter " Procedure of the mains failure control ". ( 1397)
Mains voltage Undervoltage (LU) Overvoltage (OU)
1-phase C00173 Operating threshold
LU
on
Reset threshold
LU
off
Operating threshold
OU
on
Reset threshold
OU
off
230V
AC
0, 1, 2, 3 180 V
DC
240 V
DC
400 V
DC
390 V
DC
Mains voltage Undervoltage (LU) Overvoltage (OU)
3-phase C00173 Operating threshold
LU
on
Reset threshold
LU
off
Operating threshold
OU
on
Reset threshold
OU
off
400V
AC
0 285 V
DC
430 V
DC
800 V
DC
790 V
DC
440V
AC
1 400 V
DC
430 V
DC
480V
AC
2 490 V
DC
535 V
DC
500V
AC
3 540 V
DC
585 V
DC