Lenze EDB9300UES - Manual (Page 120)

Operation and Software
BA8230 115
Additional demand 29/30
This parameter sets the type and characteristic of the analog demand source to be
controlled which is connected as an additional demand to terminals :29/:30.
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 act as speed control value, the signal source selected
through terminal 6 ("AUTO demand” or “MANUAL demand”) is to be set to "Analog
terminal :29/:30".
It is also possible to define the demand from terminal 29/30 as an additional (speed)
demand which is added to the selected main demand. For this, the parameter “Main +
additional demand” is to be set to “:27/:28 + :29/:30".
The drive direction is determined or enabled by the enable signals “LEFT (...)”,
“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 a counterclockwise field. The direction enable “LEFT”
inverts the assignment described.
When using current demands the burden resistor is to be connected on printed circuit
board A10 through jumper X26, see section 2.7.2.1.
When 4 mA ... 20 mA or 20 mA ... 4 mA is selected, the speed monitor (line current) is
active (see parameter "4-20 mA monitor").
Max. additional demand
This parameter forms part of a characteristics formation device on the additional
demand channel. It represents the upper limit of the range to which the analog
demand read in from terminal :29/:30 is standardised and limited.
Adjustment range: "Min. additional demand" ... 400 %
As supplied: 100 %
Min. additional demand
This parameter forms part of a characteristics formation device on the additional
demand channel. It represents the lower limit of the range to which the analog
demand read in from terminal :29/:30 is standardised and limited.
With bipolar demands (-10 V ... +10 V) the parameter set is not effective
(minimum = 0, see also parameter “Zero zone additional demand”).
If a value greater than that of “Max. additional demand” is set, this is reset to the value
of “Min. additional demand”.
Adjustment range: 0 % ... 400 %
As supplied: 0 %
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