Yaskawa P7B Drive Bypass - Manual (Page 68)

Digital Operator 3 - 4
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Drive Mode Indicators
The definition of the Drive mode indicators are shown in Table 3.2.
" Drive AUTO Sequence (SEQ) and AUTO Reference (REF) indicators
The Bypass operates differently than a stand alone Drive with regard to these two indicators. The Bypass control logic interfaces
with the Drive via terminals that would be used, in a Drive only installation, for the AUTO Sequence (Run Command), and
AUTO Reference (Speed Command).
Since these terminals are active and the appropriate parameters configured for the Bypass unit operation (see Tables 5.1 and
5.2), the AUTO Sequence and AUTO Reference LED’s will be lit even when the H/O/A is in HAND position (local control),
providing both the run and speed command from the local control panel. The control signals are “Local” to the Drive and
Bypass unit, but “Remote” (AUTO) from the Drive itself.
Table 3.2 Drive Mode Indicators
Indicator Definition
FWD Lit when a forward run command is input. Also lit when the Drive is in “Hand” Mode.
REV Lit when a reverse run command is input.
AUTO SEQ Lit when set up for remote run command, see Table 3.3.
AUTO REF Lit when set up for remote speed command, see Table 3.3.
ALARM Lit when a fault has occurred and flashing when an alarm has occurred.
Table 3.3 AUTO Sequence (SEQ) and Reference (REF) Indicator
Hand Mode Auto Mode
On On