24 Mentor ll User Guide
www.controltechniques.com Issue Number: 12
8 Parameter Set
Index to sections
The available range and units for the values of real parameters is
given in the index, Section 6.3, and with the descriptions, Section
6.4. Those parameters for which no range is shown are bit-
parameters. Comment or explanation of parameters is given in the
descriptions where necessary.
8.1 Adjustment of Parameters
8.1.1 The Parameter Set
Parameters are of two principal kinds numerical-value (real) parameters
such as speed and acceleration, and digital or bit parameters. The
numerical values are comparable to the adjustable potentiometers used
in purely analog Drives. They are much more precise, and not subject to
drift from the set value. Bit values are comparable to links (jumpers) or
switches, having an either-or function.
All parameters, of either kind, are either Read Only (RO) or Read-Write
(RW).
The parameter set with which Mentor II Drives are equipped is divided
into two further groups for operational convenience.
Those which are ordinarily needed for setting the Drive up at the
installation and start-up stage can be called up whenever the Drive is
powered on, and are called the visible parameters.
The second group contains the invisible parameters, so called because
at Level 1 security they do not appear in the Index display, even if called
up. These are the parameters required for fine-tuning a Drive to operate,
for example, in a process system, usually in conjunction with one or
more other Drives of the same or different type.
8.1.2 Visible and Invisible Parameters
Visible parameters, both RO and RW, are always available to read when
the Drive is powered on. Visible RW parameters are normally protected
by one or more levels of security and cannot be changed until the correct
codes have been entered. This is Level 1 security, unless and until a
higher level code is set.
Invisible parameters always require Level 2 security code, and will
require Level 3 (if set).With the correct code(s), invisible RO parameters
are accessible to read, and invisible RW parameters are accessible to
write.
Visible and invisible parameters are distinguished in the text and in the
control logic diagrams for Menus 1 to 9 and 12. Visible parameter
numbers are in plain typeface, e.g. 01.01, and invisible parameters in
italics, e.g. 01.01.
8.1.3 Organization
Parameters are organized into functionally-related sets - menus - so that
access to any individual parameter is logical and quick. The menus are
listed at the beginning of Section 8.2.
8.1.4 Adjustment
Any menu, and any visible parameter can be selected and will display its
value to read without need for a Security Code. The procedure is the
same if a parameter value is to be changed, except that entering a
Security Code will normally have to be the first action.
Any menu, and any invisible parameter can be selected and its value
displayed to read and to write when the correct security code has been
entered.
Whenever the user returns to a menu (between power-on and power-off)
the software immediately goes to the last parameter to have been
selected in that menu. This is convenient when making a series of
adjustments to a particular group of parameters.
8.1.5 Access to Parameters
Initially, when the Drive is first powered on, and if Level 3 security is not
set, access to write is immediately available to a small group of the
visible parameters - refer to section 8.2 Security ,andtheOverview
Control Logic Diagram A.
If Level 3 security is set, all parameters are protected at all times.
8.1 Adjustment of Parameters
8.2 Security
8.3 Index of Parameters
8.4 Descriptions of Parameters
Menu 01 Speed Reference
Menu 02 Ramps
Menu 03 Feedback Selection & Speed Loop
Menu 04 Current Selection & Limits
Menu 05 Current Loop
Menu 06 Field Control
Menu 07 Analogue I/O
Menu 08 Digital Inputs
Menu 09 Status Outputs
Menu 10 Status Logic & Diagnostic Information
Menu 11 Miscellaneous
Menu 12 Programmable Thresholds
Menu 13 Digital Lock
8.5 Menu Logic Diagrams
NOTE
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