Lenze Drive PLC Developer Studio 9300 Servo PLC (V8.x) - Manual (Page 83)

9300 Servo PLC
System blocks
2.12 MCTRL_MotorControl (node number 131)
2−69
L
9300 Servo PLC EN 5.0
2.12.17.5 OU − overvoltage monitoring
This function monitors the DC bus and protects the controller.
Error Monitoring function System variable Possible responses
No. Display TRIP Message Warning FAIL−QSP Off
x020 OU Overvoltage MCTRL_bOvervoltage_b ·
· Lenze setting
ü Setting possible
Monitoring is actuated if the DC bus voltage at the terminals +U
G
and −U
G
exceeds a switch−off
threshold dependent on C0173, and it remains active until the value falls below the respective
switch−on threshold again.
·
The DC−bus voltage is set under C0173:
Code LCD Possible settings IMPORTANT
Lenze Selection
[C0173] UG limit 1 Adaptation of DC−bus voltage
thresholds
·
Check during commissioning and
adapt if necessary
·
All drive components in
interconnected drives must have
the same thresholds
0 Mains < 400 V; with or without brake unit
1 Mains = 400 V; with or without brake unit
2 Mains = 460 V; with or without brake unit
3 Mains = 480 V; without brake unit
4 Mains = 480 V; with brake unit
·
The switch−off and switch−on thresholds dependent on C0173 can be gathered from the
following table:
Setting of C0173 Switch−off threshold Switch−on threshold
0 Mains < 400 V; with or without brake unit 770 V 755 V
1 Mains = 400 V; with or without brake unit 770 V 755 V
2 Mains = 460 V; with or without brake unit 770 V 755 V
3 Mains = 480 V; without brake unit 770 V 755 V
4 Mains = 480 V; with brake unit 800 V 785 V
·
The switch−off threshold defines the voltage level of the DC−bus voltage, at which the pulse
inhibit is activated.