Lenze EVS9332xS - Manual (Page 170)

Function library
Function blocks
3.2.40 Mains failure control (MFAIL)
3−118
l
EDSVS9332S−EXT EN 2.0
Commissioning
The commissioning should be carried out with motors without load.
1. The drive can be started with a LOW−HIGH edge at X5/E5.
2. Set the acceleration time Tir:
– Set speed setpoint to 100%, operate controller with maximum speed.
– Inhibit controller via terminal X5/28 (you can also use any other controller inhibit source,
CINH) and measure deceleration time until standstill.
– Set approx. 1/10 of the deceleration time in C0982.
3. Setting the retrigger time
l In case of mains failure detection by detecting the DC bus voltage level:
– Set measured deceleration time from item 2. under C0983.
l In case of mains failure detection via an external system (e.g. supply module 934X):
– Under C0983, set the time in which the drive is to be continued to be braked in a controlled
way for short−term mains recovery.
4. Switch off supply voltage (mains or DC bus).
The oscilloscope should display the following characteristic:
t
UG
t1 t2
Abschaltschwelle LU
Abschaltschwelle OU
Einschaltschwelle Bremseinheit
t
n
0
0
Ansprechschwelle
CMP2-OUT
MFAIL-DC-SET
Fig. 3−103 Schematic representation with activated mains failure control (ideal characteristic)
t1 Mains failure
t2 Zero speed reached