8-17
Operating the Drive
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
Three Wire Logic Starting
Re-configure the DSE 890 default configuration(s) by connecting SETUP::SEQ & REF::SEQUENCING
LOGIC
::
REMOTE REV OUT to SETUP::SEQ & REF::REFERENCE::REMOTE REVERSE.
RUN
Digital Input 2
STOP
Digital Input 3
REVERSE
Digital Input 4
Sequencing Logic
RUN FORWARD
NOT STOP
24V
RUN REVERSE
Figure 8.13
Wiring for Three Wire Logic Starting (Re-configured Default Configurations)
•
Fit normally-open push button switches to RUN FORWARD and RUN REVERSE.
•
Fit a normally-closed push button switch to NOT STOP, thus NOT STOP is held TRUE (24V). When
TRUE, the action of NOT STOP is to latch the RUN FORWARD and RUN REVERSE signals. When
FALSE, these signals are not latched.
For example, operating the RUN FORWARD switch starts the drive running forward. Operating the RUN
REVERSE switch causes the drive to run in reverse. Operating the NOT STOP switch (making “NOT
STOP” FALSE) at any time causes the drive to stop running.
Note
The JOG parameter is never latched in this way. The drive only jogs while the JOG parameter is TRUE.
Starting Several Drives Simultaneously
IMPORTANT
We do not recommend that the DRIVE ENABLE signal is used to start a drive in “normal” use.
Use the DRIVE ENABLE parameter to control the output power stack. When this parameter is FALSE, the
power stack is disabled regardless of the state of any other parameters. In conjunction with the HEALTH
output parameter, DRIVE ENABLE can synchronise several drives on power-up.