Dynisco ATC770, Installation And Operation Manual

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5. S
TART
-U
P
P
ROCEDURE
5.1 C
ONFIGURATION
The ATC770 is shipped with the hardware jumpers set for the following:
1. Main Input (Pressure) - Strain Gage
2. Main Output - Voltage
3. Secondary Output - Voltage
In addition, the DIP switches controlling the software security lock codes are in the “OFF” positions.
Please ensure that the correct jumper settings for the input(s) and output(s) used in your particular
application are selected. It is necessary only to select the category (e.g. Voltage or Current). The
specific range will be chosen in the software menu.
On special order the ATC770 can be powered from a 24 VAC or VDC supply (not to be confused
with the on-board 24 volt power supply used to power transmitters). If operating with a 24-volt
power supply, connect to terminals 53 and 54 as normal.
5.2 P
ARAMETERS
The ATC770 parameters are grouped in five sections guarded by three security levels. The more
common parameters are in the first groups, with the higher Group numbers for those parameters an
operator would not normally modify. Each group can be reset to its default value by two keystrokes.
This also resets the parameters of any lower numbered group to default. If GROUP 5 is set to default,
the entire instrument is reset to its default parameters. If a unit does not have a particular option, its
parameters will not appear. For example, an instrument that does not have RS-485 communications
will skip those parameters related to communications. Likewise, if a particular function is turned off,
its other parameters will not appear. For example, if Alarm 2 link
(A2.lNK) is turned to OFF in Group
3, the hysteresis, reset, filter, type, and threshold functions will not appear on screen. Nor will the
alarm appear on the bar graph display.
5.2.1 G
ETTING
R
EADY
Apply power to the cabinet and allow the system to stabilize for about 30 minutes. When the
instrument is turned on, it will go through a self-test during which the front panel will illuminate.
The instrument will then be in the normal display mode showing the value of the main input on the
upper display, usually near zero, and the Output % on the lower display, usually 0.0%. In the event
that no input device is connected, or if the transducer is amplified, the upper display will show
OPEn, and the bar graph display will be at 100% with the last segment flashing. Turn the power to
the instrument off and connect an input device to the appropriate terminals. Upon turning the
instrument back on, the displays should have a numeric value, close to zero pressure on the
pressure display. Depressing
FUNC
will go automatically into the GROUP 1 parameters.