Lenze 8400 User Manual

Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 1412
17 Function library
17.1 Function blocks | L_MFail_1
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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).
• Signal for the message: nDCVoltage_a of the SB LS_MotorInterface
.
2. Measure the speed with an oscilloscope (channel 2).
• Signal for the message: nMotorSpeedAct_a of the SB LS_MotorInterface
.
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
).
• From version V17.00.00: For a mains voltage of 500 V you can raise the operating threshold
OU
on
and the reset threshold OU
off
by 10 V via bit 14 in C02864/1.
• 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 %
17.1.102.5 Commissioning the mains failure control
Commissioning should be executed with motors without load.
 Note!
The following data refers to the chapter "Procedure of the mains failure control". ( 1407)
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
0285V
DC
430 V
DC
800 V
DC
790 V
DC
440V
AC
1400V
DC
430 V
DC
480V
AC
2490V
DC
535 V
DC
500V
AC
3540V
DC
585 V
DC
 Stop!
The voltage setpoint must be below the operating threshold of a braking unit if
connected. If a connected braking unit responds, the drive with max. possible torque
(I
max
) will be braked. The desired operational performance gets lost.

Lenze 8400 Specifications

General

Category	DC Drives
Series	8400
Protection class	IP20
Control Type	Vector control
Communication	CANopen, PROFIBUS, Ethernet
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Input Voltage	AC 230/400/480 V