Lenze EDS4900U-REG - Manual (Page 166)

Configuration
7-75
48XX/49XXSHB0399
Initialisation
When switching off the mains, the output value of the motor potentiometer is
stored in the EEPROM. Select under code C265 whether the motor potentiometer
accepts the stored value or the lower limit value when starting after mains
connection.
The EEPROM is designed for a minimum of 40.000 mains connection cycles.
7.5.3.2 Memory function of the motor potentiometer (S&H)
Purpose
The memory function of the motor potentiometer (sample and hold, S&H) can be
reassigned to a freely assignable analog input (FAI). It is thus possible to store a
signal stored under C145 when switching the mains.
Note:
Note!
For this function, the deactivation and the initialisation function of the motor
potentiometer is used, i.e. the motor potentiometer can no longer be used when
switching to a FAI signal.
4900Str059
C 2 6 5 C 2 6 4
S & H
C 1 4 6 / C 1 4 7
C 2 6 5 C 2 6 4
C 1 4 5 / C 1 4 6
C 2 6 1
C 2 6 0 C 2 6 6
1
0
C 2 6 7
M o t o r p o t e n t i o m e t e r
o u t p u t
F D I
T i r
C 2 6 2
T i f
C 2 6 3
F D I
I n p u t
FIG 7-32 Motor potentiometer with S&H function
With the function ”Deactivate motor potentiometer” via FDI (C113) the hold
function is activated. A change of the input value does not influence the output any
longer. When switching the mains, the value stored last is transferred to the
EEPROM and is available when switching on the mains again.
The initialisation function is however dependent on the codes C264 and C265.
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