Lenze EDB9300UES - Manual (Page 118)

Operation and Software
BA8230 113
4.4.4 Parameters for analog I/O Main demand 27/28
The type and characteristics of the controlling analog demand source connected as
the main demand to terminals :27/:28 are set with this parameter.
Select list: - 0 ... +10 V / 0 ... 20 mA
- -10 V ... +10 V
- 4 mA ... 20 mA
- 20 mA ... 4 mA
As supplied: 0 ...+10 V / 0 ... 20 mA
If this demand source is to take effect as a speed control variable, the signal source
selected through terminal :6 (“AUTO demand” or “MANUAL demand”) must be set to
“Analog terminal :27/:28”.
The drive direction is determined and enabled by the demand presets “LEFT (...)” and
“RIGHT (...)”. These must therefore be configured accordingly (see “AUTO control” or
“MANUAL control”).
If the bipolar demand source (-10 V ... +10 V) is selected, a positive demand in
conjunction with the direction enable “RIGHT” results in a clockwise rotation field and
a negative demand produces an anti-clockwise rotation field. The “LEFT” direction
enable inverts the assignment described.
When using current demands the burden resistor is to be connected on printed circuit
board A10 through a jumper X25, see section 2.7.2.1.
If 4 mA ... 20 mA or 20 mA ... 4 mA is selected, the wire break monitor (line current) is
active (see parameter "4-20 mA monitor”).
Max. main demand
This parameter belongs to a characteristic formation device on the main demand
channel. It represents the upper limit of the range to which the analog demand read in
from terminal :27/:28 is standardised and limited.
Adjustment range: "Min. main demand" ... 400 %
As supplied: 100 %
Min. main demand
This parameter forms part of a characteristics formation device on the main demand
channel. It represents the lower limit of the range to which the analog demand read in
from terminal :27/:28 is standardised and limited.
With bipolar demands (-10 V ... +10 V) the parameter set has no effect (minimum = 0,
see also parameter “Zero zone main demand").
If a value greater than “Max. main demand” is set, it is limited to the value of “Min.
main demand”.
Adjustment range: 0 % ... 400 %
As supplied: 0 %
Zero zone main demand
This parameter forms part of a characteristics formation device on the main demand
channel.
With unipolar demands it determines the range in which the analog demand read in
from terminal :27/:28 is limited to “Min. main demand”.
With bipolar demands (-10 V ... +10 V) it defines the zero zone.
Adjustment range: 0 % ... 20 %
As supplied: 0,5 %
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