<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w
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To use two different braking algorithms (short 1 second and long 5 seconds), connect a wire from terminal N-13 in the above diagram (any point after the last interlock switch) to the next unused VFD terminal input (assume this is 4). You could also add a toggle switch in that input wire line, so for something like threading, you hit the toggle to the open position to get 1 second braking.
[FONT=&]In the diagram above, this would be Input 4 (BR). Reprogram input 4 per page 4-22 of the manual, "Two Stage Acceleration and Deceleration" so set with option code "09". Set A093 to 4 seconds and set A094=0. Set first step of the deceleration F003 to 1 second (set F002 acceleration to 5 seconds, second acceleration time to A092 = 1 second). So whenever the relay is latched, and there is power to N-13, this signals the VFD to use 2-stage braking of 1+4 seconds. Anytime power from P24 is interrupted (or the signal to input 4 "BR" is broken), the machine would revert to 1 second braking (single stage). You could also still use the mechanical brake if you wanted to, you would just need the switch in the schematic that signals the motor to free run (no braking B091 setting 01 programmed to a separate input terminal), and this should engage when you press on the brake.[/FONT]<!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPriority="99" LatentStyleCount="267"> <w:LsdException Locked="false" Priority="0" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Normal"/> <w:LsdException Locked="false" Priority="9" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="heading 1"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 2"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 3"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 4"/> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 5"/> 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Let me know if this is clear, and if you want it added to wiring diagram/list of suggested VFD parameter changes.