TB Wood's WFC1000 Series, Installation, Operation And Maintenance Instructions

Page: 46 / 82

WFC HT Operation Under Program Sequencer Control
The WFC HT can be operated under control of
the Program Sequencer from either the key-
pad or from the terminal strip. See
Parameter 21-MODE (Section 4.2 and
Table 4.4).
When operating from the keypad, pressing
the FWD key will command the drive to
cycle through the programmed steps of the
Program Sequencer one time only. Pressing
the SHIFT and FWD keys simultaneously
will cause the programmed sequence to
repeat until the stop key is pressed.
When operating from the terminal strip using
remote operators, the same possibilities
exist. If operating under three wire control,
with the R/J terminal active, momentarily
activating the FWD terminal will force the
programmed sequence to be executed
once. If the FWD terminal is activated
continuously, the programmed sequence will be repeated. When a stop command is issued to the drive, it
will reset the Program Sequencer to the beginning and await the next start command. If the CTS terminal is
activated, the Program Sequencer pauses at the Current Step.
The Program Sequencer cannot be run under SIO control. The individual program parameters may
be downloaded to the control via SIO communication.
The program sequence can be single-stepped through by repeatedly pressing the LOCal/REMote key. If, for
example, long time delays were programmed at several steps of the Program Sequencer, it would be
possible to disregard these long-time intervals to verify program functions.
Other Software Features
During program sequence operation the first four (4) characters of the keypad display will show the
sequence step being executed (SEQ1, SEQ2 … SEQ9). See Section 3.6 description of displays.
Parameter A8-OPTA8 is available for viewing during the execution of the programmed sequence steps. This
parameter allows the viewing of elapsed time during the sequence, if using the time base option. If using the
event count option, this will be a real time events counter. Parameter A8 can allow the user to monitor where
the drive is operating relative to the entire sequence and when you can expect the next step to begin.
Parameter A9-OPTA9 can be
used in conjunction with A8 since
it displays the actual step
number of the sequence (0-9).
Parameter B7-NENC is used as
a prescaler for the Event Count
parameter when operating in the
Pulse Count mode (using the
WPC04 Encoder Interface
Board). For example, if B7 is set
to 10, the inverter will receive 10
pulses before considering one
(1) event complete. This is useful
when very high pulse counts are
needed. The maximum fre-
quency of the input pulses is
60 Hz.
Event Sequencer Worksheet
Refer to the previous discussion
and fill in the appropriate codes
for Cx-CNTLx and Ex-ECNTx in
Table 4.5. To skip all remaining
events, ensure that the respec-
tive Cx and Ex values are set to
zero.
38
Event # Param/Bit #
C1-CNTL1
E1-ECNT1
C2-CNTL2
E2-ECNT2
C3-CNTL3
E3-ECNT3
C4-CNTL4
E4-ECNT4
C5-CNTL5
E5-ECNT5
C6-CNTL6
E6-ECNT6
C7-CNTL7
E7-ECNT7
C8-CNTL8
E8-ECNT8
C9-CNTL9
E9-ECNT9
7 6 5 4 3 2 1 0
1
2
3
4
5
6
7
8
9
Note 1: Terminal PS3 is not available under these selections of
21-MODE for digital comparison.
TABLE 4.4
TABLE 4.5
21-MODE
Setting
LOCal REMote
Transfer
by
0/10 Sequencer operation N/A N/A
from keypad
1/11 Normal keypad Sequencer operation LOC/REM
operation from keypad key
2/12 Normal keypad Sequencer operation LOC/REM
3/13 operation from terminal strip key
4/14 N/A Sequencer operation N/A
24/34 from terminal strip
21/31 Normal keypad Sequencer operation PS3
operation from keypad (Note 1)
22/32 Normal keypad Sequencer operation PS3
23/33 operation from terminal strip
(Note 1)
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