Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 344)

u Other Functionality
Each of the following functions must be enabled during start-up of the Drive:
Enable the drive to run
RUN ENABLE (Point 35) can be commanded to require the drive to have a physical input (DI-2) set before the drive can run.
This works in conjunction with CMD RUN.STOP (Point 24) or the CMD REV.STOP (Point 22). If RUN ENABLE (Point
35) is commanded ON then terminal for DI-2 does not need to be on and CMD RUN.STOP (Point 24) or CMD REV.STOP
(point 22) needs to be commanded ON for the drive to run. If, on the other hand, RUN ENABLE (Point 35) is commanded
OFF, then to run the drive the input terminal for DI-3 needs to be on and either CMD RUN.STOP (Point 24) or CMD REV.STOP
(Point 22), needs to be commanded ON.
Start and stop the drive
CMD RUN.STOP (Point 24) can be commanded to run the Bypass in the forward direction. STOP.RUN (Point 23) shows the
current status of the Bypass.
Change directions
CMD REV.STOP (Point 22) can be commanded to run the drive in the reverse direction (ignored in Bypass Mode). FWD.REV
(Point 21) shows the current direction of the drive rotation.
NOTICE: Improper drive direction may damage equipment if parameter b1-04, Reverse Enable, is improperly set (b1-04 = 0).
Digital Outputs
MULTI OUT 1 (Point 40), MULTI OUT 2 (Point 41), and MULTI OUT 3 (Point 42) are physical digital outputs on the Bypass
(DO-7 through DO-9). Their purpose depends on how the Bypass has been set-up. The Bypass can be programmed so that
these points can display various limits, warnings, and status conditions. Some examples include HOA state, Drive or Bypass
Mode, Fault Active, and Loss of Load detected.
Loop gain
PID P GAIN (Point 63) and PID I TIME (Point 64) are the gain and integral time parameters similar to the P and I gains in
the APOGEE Terminal Equipment Controllers. The P1000 Bypass PI loop is structured differently than the Siemens loop, so
there is not a one-to-one correspondence between the gains.
Reading and resetting faults
OK.FAULT (Point 93) shows the current status of the Bypass. FAULT CODE (Point 17) contains the code for the most current
fault. LST FLT CODE (Point 66) contains the code for the previous drive fault. See table below for descriptions of the fault
codes. The drive can be reset back to OK mode by commanding RESET FAULT (Point 94) to RESET.
F.3 Slope and Intercept Conversion
344 YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual