Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
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D-89
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SEQUENCING LOGIC
SETUP::SEQ & REF::SEQUENCING LOGIC
This function block contains all the parameters relating to the sequencing (start and stop) of the Drive.
Before the Drive will respond to the RUN FORWARD, RUN REVERSE or JOG parameters (cause the Drive to run or jog),
the parameters DRIVE ENABLE, NOT FAST STOP and NOT COAST STOP need to be set to TRUE. In addition, the Drive
needs to be healthy (HEALTHY is TRUE). The Drive will only respond to RUN FORWARD, RUN REVERSE and JOG if the
Drive is in the Remote Sequencing mode.
If RUN FORWARD and RUN REVERSE are TRUE, both are ignored and the Drive will stop.
Parameter Descriptions
RUN REVERSE
PREF: 92.02
Default: FALSE
Range: FALSE / TRUE
Setting this parameter to TRUE causes the Drive to run in the reverse direction.
JOG
PREF: 92.04
Default: FALSE
Range: FALSE / TRUE
Setting this parameter TRUE causes the Drive to run at the speed set by JOG SETPOINT (refer to the REFERENCE JOG
function block). Once jogging, setting JOG to FALSE causes the Drive to ramp to zero.
NOT FAST STOP
PREF: 92.07
Default: TRUE
Range: FALSE / TRUE
Whilst running or jogging, setting this parameter to FALSE causes the Drive to ramp to zero. The rate is set by FAST STOP
RATE in the STOP function block. The action of setting NOT FAST STOP to TRUE is latched. The Drive cannot be restarted
until fast stop is completed.
NOT COAST STOP
PREF: 92.08
Default: TRUE
Range: FALSE / TRUE
Setting this parameter to FALSE disables the Drive operation and causes the motor to coast. The action of setting this
parameter to TRUE is latched. The Drive can not be restarted until the coast stop is completed.
A detailed description of the sequencer states, as indicated by the SEQUENCER STATE parameter, is described in Appendix
B.
