Mentor ll User Guide 41
Issue Number: 12 www.controltechniques.com
8.6 Advanced Parameter Descriptions
Menu 1: Speed Reference
There are four speed references, 01.17, 01.18, 01.19 and 01.20.Eachof
the four can be given any single value in the range 1000 forward to 1000
in reverse (the value 1000 representing full speed), and can be rewritten
through the keypad, the programmable inputs or the serial link
(interface) at any time. The default destination for external speed
reference (terminal TB1-3) is reference 1 (01.17), meaning that the
external reference is present in reference 1 unless a different selection is
made, from the other three references. The availability of four selectable
speed reference parameters gives great flexibility in the use of
references from other equipment. Such additional external references
would be handled by general purpose analog inputs, Menu 07, or digital
logic inputs, Menu 08.
Two selectors, 01.14 and 01.15, control the application of the four
internal references as the source speed reference.
Modifying factors applied to the source speed reference are, in
sequence, an added offset, selection of bipolar or unipolar input,
inversion of polarity (reverse), and the maximum and minimum values of
forward and reverse speed, Menu 02.
Control selectors -
01.11 Reference ON (if 01.11 = 0 then pre-ramp reference = 0),
01.12 Reverse (by reference inversion)
01.13 Inch speed reference (01.05).
The speed reference at source, 01.01 is the input to the zero reference
interlock 01.16, which (when selected, 01.16 =1)preventstheDrive
starting until the speed reference is close to zero.
Monitors the value of the speed reference continuously. Parameter
01.01 is also used to initiate the zero speed reference interlock, 01.16.
Monitors the value of the speed reference after the offset, 01.04,has
been added.
The final speed reference before any ramp rates are applied (refer to
Menu 02).
The analog reference offset (range -1000 to +1000) is a programmable
speed demand term added to the speed reference value 01.01.Itisa
practical speed trim input, as for example from a dancer arm in tension
control, or can be used to set a creep or minimum speed.
Becomes the source of speed reference when selected by 01.13
(controlled in default by terminals TB3-22 and TB3-23). It provides the
convenient facility to set a speed demand different from (and usually
less than) the ordinary speed reference. Must be less than the maximum
speed set by 01.06 and 01.09.
Sets the upper limit of speed in the forward direction of rotation.
Sets the lower limit of speed in the forward direction of rotation. The
speed minimum value is disabled if bipolar selector 01.10 =1 to prevent
oscillation between the forward and reverse minimum speeds when the
input speed reference is zero.
Sets the lower limit of speed in the reverse direction of rotation. The
speed minimum value is disabled if bipolar selector 01.10 =1 to prevent
oscillation between the forward and reverse minimum speeds when the
input speed reference is zero.
4 Quadrant
1 Quadrant
Sets the upper limit of speed in the reverse direction of rotation.
01.01 Pre-offset speed reference
RO Bi
ô
±1000
ð
01.02 Post-offset speed reference
RO Bi
ô
±1000
ð
01.03 Pre-ramp reference
RW Bi
ô
±1000
ð
01.04 Offset
RW Bi
ô
±1000
ð
+000
01.05 Inch reference
RW Bi
ô
±1000
ð
+050
01.06 Max. speed forward
RW Uni
ô
0to+1000
ð
+1000
01.07 Min. speed forward
RW Uni
ô
0to+1000
ð
+1000
01.08 Min. speed reverse
RW Uni
ô
-1000to0
ð
-1000
01.09 Max. speed reverse
RW Uni
ô
-1000to0
ð
-1000
RW Uni
ô
0
ð
000
To Next Page
Loading...
Need help?
General
