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Multistep Ref A3 Submenu
64
Multistep Ref A3 Submenu
Detailed descriptions (non DCP operation)
The multi-step speed reference function is one possible
way for the drive to accept speed command. To use this
function, the user can enter up to fifteen speed
commands (CMD1
– CMD15) and assign four logic
inputs as speed command selections.
Note: CMD0 is reserved for zero speed, therefore is not
accessible to the user for programming.
During operation, the user will encode a binary signal on
the four logic inputs that determines which speed
command the software should use. The user need not
use all four speed command selection bits; if no logic
input is specified for one of the selection bits, that bit is
always zero. For instance, if no logic input is specified
for the most significant bit (B3), that bit will be zero and
the user can select from CMD0 - CMD7.
IMPORTANT
Since these speed commands are selected with external
contacts, a new command selection must be present for
50ms before it is recognized.
logic input
multi-step
STEP REF
speed
B3
B2
B1
B0
command
0
0
0
0
CMD0
0
0
0
1
CMD1
0
0
1
0
CMD2
0
0
1
1
CMD3
0
1
0
0
CMD4
0
1
0
1
CMD5
0
1
1
0
CMD6
0
1
1
1
CMD7
1
0
0
0
CMD8
1
0
0
1
CMD9
1
0
1
0
CMD10
1
0
1
1
CMD11
1
1
0
0
CMD12
1
1
0
1
CMD13
1
1
1
0
CMD14
1
1
1
1
CMD15
Multi-step Selection
An example of the use of the multi-step command is as
follows:
All speed commands are positive.
CMD0 specifies zero speed.
CMD1 specifies leveling speed.
CMD2 specifies inspection speed.
CMD3 specifies an overspeed limit.
CMD4
– CMD15 specify different top speeds
depending on number of floors in the run.
For typical use, the user will have all speed commands
to be positive, in which case a logic input s (UP/DWN or
RUNUP & RUNDOWN) must also be specified to
determine up or down direction
.
It is possible for the user
to specify both positive and negative values for CMD1 -
CMD15, in which case logic input bit(s) are not needed.
Detailed descriptions (DCP operation)
If the drive is being controlled serially via DCP (serial
mode set to DCP3 or DCP4) then the user has the ability
to set 7 speed commands within this menu. Additionally
within this menu the user can also adjust some
additional DCP specific threshold settings which are
used to provide feedback to the control system serially.
During operation in DCP3 mode the control system will
select which speed command the drive should run at
serially, in which direction the elevator should travel and
will also will remove the applicable high speed command
(V1, V2, V3 & V4) when approaching floor level and
replace with a leveling speed command (V0). On nearing
arrival at floor level the control system will remove the
V0 speed command and the drive will slow the motor to
a stop, the brake will set and travel will complete.
During DCP4 operation the control system largely leaves
the drive to control the slow down and stopping
sequence by simply advising the drive the exact distance
from the desired floor at any given point in time, the drive
than calculates based on its S-Curves (A2) the point at
which it must slow to allow the elevator to stop directly at
the floor level without a leveling speed. When the
machine stops the brake sets and travel will complete.
Содержание HPV 900 Series 2
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Страница 227: ...205 Z Z MARKER LOST 150 Zero Speed Level parameter 47 Zero Speed logic output 105 Zero Speed Time parameter 47...
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