Low Voltage Lu - Lenze 9300 System Manual

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Configuration
7.6.3.6

Low voltage LU

Purpose
DC bus monitoring, controller protection.
Fig. 7-239

Low voltage LU

Signal
Name Type
A -VOLTAGE -
G
MONIT-LU d
Mains voltage range
< 400 V
400 V
400 ... 460 V
480 V without brake chopper
Operation with brake chopper (up to
480 V)
Function
The monitoring indicates a message if the DC bus voltage (terminals +U
threshold (switch-off threshold LU) set under code C0173.
The message is reset if the switch-off threshold LU is exceeded again .
The switch-off threshold LU determines the voltage level of the DC bus voltage, where the pulse
inhibit is activated.
The selection number is also effective for the overvoltage monitoring (OU).
Adapt the setting of the codes to the available mains voltage (also for operation via +U
terminals). When the controller is operated in a network of drives, all controllers must have the same
setting.
If the LU message is applied for more than 3 seconds or if the mains is connected, this is entered into
the history buffer. This can be the case if the control module is supplied externally by terminals X5/39
and X5/59 and the mains is switched off.
If the signal is reset (mains is reconnected) this is not entered in the history buffer, but only deleted
(this is not a fault, but a controller state).
If the low voltage messages appear only for less than 3 seconds this is interpreted as an interference
(e.g. mains fault) and entered into the history buffer. In this case, the history buffer is continued.
Features:
•
LECOM no.: 1030
•
Reaction: MESSAGE (cannot be modified)
7-300
a -VOLTAGE
G
DIS DIS format CFG
C0053 dec -
- - -
Selection number Switch-off threshold LU
(C0173)
0 285 V
1 285 V
2 328 V
3 342 V
4 342 V
EDSVS9332P-D21 EN 3.0
C0173 MONIT
MONIT-LU
C0053
Source
List Lenze
- - cannot be reassigned
- - -
Note
Switch-on threshold LU
430 V
430 V
473 V
487 V
487 V
and -U ) falls below the
G G
G
L
/-U
G