Vishay G4-DT, Техническое руководство, Страница: 41 / 174

G4 Multi Channel Force Instrument
4-1
4. Set-up
General
All operating functions in the G4 Instrument are controlled by parameters. The
parameter values are permanently stored in the instrument and will not be lost when
the unit is switched off. At delivery the parameters are factory-set to default values,
giving the instrument an initial standard function.
The actual setting of the parameter values can be read and edited during normal
measuring operation in sub menu ‘Parameter Set-up’.
Editing of parameter values can be performed using the color touch display and keys
on the front panel of the instrument. After editing hardware parameters the instrument
will be restarted.
In the instrument there are two levels of security locks provided to protect from
unauthorized access to instrument functions and editing of parameters and values. The
locks are opened by four-digit codes.
Warning: Changes done during editing of set-up parameters will affect the behaviour
of the instrument immediately. The user must take all necessary precautions to prevent
any undesired effects in the process monitored or controlled by the G4 instrument or a
connected control system.
It is strongly recommended to activate the set-up lock in the instrument to prevent any
unauthorized changes of set-up parameters.
It’s a good practice to make a backup of the set-up after changes have been done. See
chapter ‘8 Maintenance’ for more information on backup and restore.
The ‘Parameter Set-up’ menu contain the following sub menus:
General: This parameter group controls the general functionality of the instrument.
Such as display language, display mode, security, key functions and so on.
Hardware Configuration: Parameters used for configuring the instrument hardware.
Here parameters that are used for basic configuration, of the Function blocks, found.
Note that when the instrument is starting up it will check that the installed hardware is
compatible with the settings. If not an alarm will be issued.
Calibration: Parameters that affect the behavior of the eight possible Function Blocks
in the instrument. There are parameters for calibration type, calibration values, filter
settings etc. All Function Blocks are individually settable.
Communication: Sub menus are Serial Com, Ethernet and Fieldbus.
Serial Com sub menu content is parameters used to set-up COM1 (RS232) and COM2
(RS485) on the CPU module. Parameters are among others: com. port mode, baud
rate and data format. Ethernet sub menu content is parameters for Modbus TCP
configuration. Fieldbus sub menu content is configuration parameters related to
fieldbus communication such as address, baud rate and transmitted data setup.
Level Supervision: The instrument has 32 level supervisors that are configured from
this sub menu. Settings for each level are which Function Block that the individual level
is to monitor and which signal that shall be monitored from the selected Function Block.
Signals that can be monitored are Sum value, Difference value, Output 1 and so on.
The output function e.g. if the output shall be active above or below the set level is
configured here. There are parameters for hystereses setting and level switching
delays.
Inputs: The use of the instruments digital inputs is set in this menu. Note that the
inputs are numbered 11 to 68. Inputs 11 to 18 corresponds to inputs on slot 1 I/O