Lenze 8400 motec - Manual (Page 476)

12 Function library
12.11 L_JogCtrlExtension_1
476 Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05
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Truth table for activating the pre-switch off
The inputs bInputSel1 and bInputSel2 serve to select the pre-switch off according to the following
truth table:
Truth table - switch-off positioning
If the pre-switch off is activated via the inputs bInputSel1 and bInputSel2, the following internal
logic applies to the inputs bStopX and bSlowDownX:
Afterwards, the output signals of the internal logic are linked to the input signals bRfgIn, bJog1In
and bJog2In as follows:
• bRfgOut = bRfgIn OR bRfgOut*
• bJogXOut = bJogXIn AND bJogXOut*
[12-15] Logic linkage of the output signals of the internal logic
To achieve the desired behaviour (starting at high speed, pre-switch off at low speed), both inputs
bJog1In and bJog2In must be set to TRUE.
Inputs Function Response in the setpoint generator
(FB L_NSet_1 )
bInputSel1 bInputSel2
FALSE FALSE Pre-switch off inactive No response
• The input signals bRfgIn, bJog1In
and bJog2In are passed through
1:1 to the upstream FB L_NSet_1 .
TRUE FALSE The bSlowDown1 and bStop1 inputs are
evaluated.
Pre-switch off can be activated
• See the following Truth table -
switch-off positioning .
FALSE TRUE The bSlowDown2 and bStop2 inputs are
evaluated.
TRUE TRUE The bSlowDown3 and bStop3 inputs are
evaluated.
FB L_JogCtrlExtension_1 Response in the setpoint generator
(FB L_NSet_1 )
Inputs Output signals (internal logic)
bStopX bSlowDownX bRfgOut* bJog1Out* bJog2Out2*
FALSE FALSE FALSE TRUE TRUE If both inputs are FALSE, the fixed
setpoint 3 is activated.
FALSE TRUE FALSE FALSE TRUE If the SlowDown function is
activated via the selected
bSlowDown input, fixed setpoint 2 is
activated.
TRUE FALSE/
TRUE
TRUE FALSE FALSE If the stop function is activated via
the selected bStop input, setpoint "0"
is activated.
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