Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
6. Available Reference Values
KSW-30
Switching of preset reference
values and ramp blocks
An enable function can be used to catch undesired states when the preset values and
the preset reference values and ramp profiles are switched. The enable is edge or level-
controlled.
When an edge-controlled enable is selected, a signal source (e.g., BE2) is selected in
D128. The enable takes effect when this source supplies a positive edge. A binary input
or a parameter for fieldbus mode can be selected in D128 (fieldbus mode D212, bit14).
When a level-controlled enable is selected the switchover is accepted when the signal
selected in D129 is high. The same signal sources can be selected in D129 as in D128.
D212 bit 15 is used as the signal source for fieldbus mode.
The enables are OR-linked (i.e., either the level-controlled or edge-controlled enable
must be activated before a switchover is accepted). They enable the switched preset
values, preset reference values, and ramp profiles simultaneously.
Details on the decelerating ramps
To prevent preset reference values with high speeds from being decelerated with too
short ramps during switchover procedures, activation of the decelerating ramps is
dependent on D13
• D13 = 0:preset value and D13 = 1:ramp profile
The decelerating ramp of the new preset reference value becomes active when the
new preset reference value is reached.
Example: The motor revolves at the current preset reference value of 3000 rpm and
the decelerating ramp of 100 rpm/s. A switchover is made to the preset reference
value of 75 rpm with the decelerating ramp of 750 rpm/s.
After the enable of the switchover is given the drive decelerates with 100 rpm/s to 75
rpm. When the drive reaches this speed, the decelerating ramp of 750 rpm/s becomes
active.
• D13 = 2:binary signals
The decelerating ramp becomes active immediately after a switch since the user can
switch between decelerating and accelerating ramps with this setting.
Binary input signals
Signal Function Selector
Fieldbus
Image
Display
Parameter
Time ON Time OFF
Preset reference value
select 0
D124.0 D212 Bit0 - -
Preset reference value
select 1
D124.1 D212 Bit1 - -
Preset reference value
select 2
D124.2 D212 Bit2 - -
Preset reference value
select 3
Binary-coded switching between the
preset reference values is performed
with the signals preset reference
value select 0 to 3.
D124.3
D212
Bit3
1
D324
- -
Preset reference value
accelerating ramp select 0
D126.0 D212 Bit6 - -
Preset reference value
accelerating ramp select 1
D126.1 D212 Bit7 - -
Preset reference value
accelerating ramp select 2
D126.2 D212 Bit8 - -
Preset reference value
accelerating ramp select 3
When D13 is set to 2:binary signals,
the signals accelerating ramp select 0
to 3 are used to select the
accelerating ramp.
D126.3 D212 Bit9
D326
- -
Preset reference value
decelerating ramp select 0
D127.0
D212
Bit10
- -
Preset reference value
decelerating ramp select 1
D127.1
D212
Bit11
- -
Preset reference value
decelerating ramp select 2
D127.2
D212
Bit12
- -
Preset reference value
decelerating ramp select 3
When the parameter D13 is set to
2:binary signals, the signals
decelerating ramp select 0 to 3 are
used to select the decelerating ramp.
D127.3
D212
Bit13
D327
- -