Welcome to GTV! Today I will be showing you how to program Carlo Gavazzi's UDM 35 and
40 Series Universal Digital Panel Meter using the keypad. The programming of configuration
parameters and the display may be controlled by means of the 4 function keys on the right
side of the panel meter. To access the programming menu, press and hold the enter key for 2 seconds.
The display will indicate pass for password then four zeroes will display. This prompts
the user to enter the password. Each individual digit is selected from left to right by pushing
the escape key. Changing the value of each digit is accomplished using these arrow keys
here. When completed, press enter to confirm this step. I will use the factory default
password of "0000". Once in programming mode, the unit will revert to run mode if no entry
is made for approximately 20 seconds. Movement to a specific parameter heading is accomplished
using the up and down arrow keys. I will push the arrow key up to find the input selection
heading marked by INP. I will push enter here to access the inputs. I can use the arrow
keys to select Range r1, r2, r3, r4, r5, and r6. These values are defined on the instruction
sheet that came with your device. Once the range is selected push enter. LSX and HSX
input modules offer True RMS marked by TRNS or DC measurement marked by DC. Once the type
is selected push enter. I can now change the input signal integration time value or INTT.
I can use the arrow keys to adjust this value or choose auto when selecting all zeroes and
the value will be calculated from 100 to 999.9 milliseconds. Press enter to confirm and then
up to move to the next program sequence. For the UDM40 this area of the selection would
be the display color or COLR. The base unit offers three display colors; red, orange or
green. If using the UDM 35, instead of COLR it should read DISP for display. The display
can be configured as 3 ½ digit marked by 1999, or 3 digit + dummy zero, marked by 9990.
Once selected I can push enter and up to go to the next program sequence, which is SCAL
or scaling. This allows access for configuring the electrical input range, the decimal point
position and display span. Changing the electrical input range allows me to define an electrical
input range different from the standard range setup in the input programming. I will push
enter to change the electrical input range. LOE should appear. Using the escape key, I
can select the digit to change and then adjust with the arrow keys. I will keep this at 0
and press enter. Now HIE should appear. I will set this to my desired range and press
enter. The next parameter is DP or decimal point. I can push the arrow keys to place
the decimal to my desired location and then press enter. The next parameter here is the
display span, this allows me to define the display span in engineering units corresponding
to the previously defined electrical input range. The LOD value represents the minimum
displayed value and HID represents the maximum displayed value. When LOD appears, I can press
the escape key to the proper digit. The arrow keys select the desired value. I will repeat
procedure until all digits have been set, and press enter to confirm and advance to
the next step, HID. I can adjust this value the same way as before and then press enter
to confirm. I can now press up to advance to the next program step sequence. For the
UDM 40 models there is an option to enable linearization. The next program should read
LIN or linearization. Press the enter key followed by the arrow keys to choose to ignore
or enable linearization, and then press enter again. Since I chose YES, I am prompted to
enter the number of Linearization Points, with a numerical value from 1 to 16 and then
press enter. Next, the correlation between the inputs and outputs must be defined in
the program. LN.01 will be displayed. Press the escape key to toggle through the positions,
and use the arrow keys to select the value. Press enter to confirm and advance. OU.01
will display next. I can select the desired value and press enter to confirm. Repeat this
procedure for each set of Inputs and Outputs, up through a maximum of 16. Press the enter
key to confirm and the up arrow to the next program sequence. For this setting I will
adjust the Alarm set points. There are up to 4 alarm set points that can be configured.
The first programming sequence is SP1. Press enter to see the first parameter, Minimum
Set-point Limit. LOS will be displayed. To skip this step and advance to the next parameter,
press the enter key. Otherwise, press the escape key to select the proper numerical
position to enter a value. Press the up/down arrow keys to select the numerical value for
each position. When completed, press enter to confirm and advance to the next programming
sequence. The next parameter is the maximum set point limit or HIS. Press the escape key
to toggle to the appropriate position. Then use the up and down arrows to select the appropriate
value for each position. Press enter to confirm and advance to the next programming step.
This should be the Set-Point, the actual value that must be reached to trigger an output.
It is listed as SET. When displayed, press the escape key to toggle to the desired numerical
position. Use the arrow keys to select the appropriate value for each position. Press
enter to confirm and advance to the next parameter in the program sequence. Next is HYS for hysteresis;
this is the point at which an active alarm output must revert to for the alarm output
to turn off. If an "up" alarm set point is 10.5, and I want to have the alarm reset at
10.3, then the Hysteresis value to set in the program must be .2, and not 10.3. I will
not need to be concerned about whether the value is positive or negative since this is
configured when I select the Down Alarm or Up Alarm. I will now press enter to advance
to the next step. Next is the off delay, labeled as OFFD. When Off Delay is displayed I can
opt to choose a value of 0 to 255 seconds. I will use the escape key to toggle to the
desired position and select the correct value with the arrow keys. Press enter to confirm
and advance to the next step. When OND or on delay is displayed, I can choose a value
between 0 and 255 seconds by following the same steps when adjusting off delay. The next
parameter is relay configuration, or RLY. The set point alarm can be configured using
the arrow keys to be normally energized, NE or normally de-energized, ND. I will advance
to the next step to configure the alarm type, ALR, which allow for the selection of off,
down alarm, up alarm, down alarm with disable at power on, up with alarm latch, or down
with alarm latch. Then I will push enter to confirm. On the UDM 40, the option for configuring
the display color for alarm event is available. The choices are red, orange, green, or none.
If none is selected the color will remain the basic color during an alarm event. I will
push enter to finish up with the set points and move up to digital filtering or FILT.
The digital panel meters are extremely fast to follow the trend of input signals and to
display the relevant values. Unlike in analog panel meters, which tend to filter the input
and present a more stable indication, the fluctuations in digital panel meters can be
quite fast and prevent the user from clearly reading the displayed value. Fluctuations
can also be introduced when the resolution of the displayed value is higher than the
input resolution. The use of a digital filter results in higher stability of the displayed
value. There are two types of filter parameters. The first is FIL.S, it defines the operating
range of the filter. Fil.S represents the resolution wanted to assign to the display.
The manufacturer suggests setting this parameter to evaluate the amplitude of the fluctuation
on the display. If a display value fluctuates between 2.5 and 3.4, it means that the fluctuation
is 9 digits and the Fil.S is set as "9". The second filter parameter is FIL.C. It represents
the filtering coefficient. The higher the value of Fil.C is, the smoother the curve
of the displayed value. There is no theoretical rule to define this parameter, but the manufacturer
suggests starting with the same value of the Fil.S coefficient and then increase it until
the desired stability is reached. The digital filter affects the values retransmitted via
both serial communications and analog output. Many times the displayed value must be retransmitted
as an analog output. The low analog output and high analog output are directly related
to the parameters low display value and high display value set earlier. The analog output
can be addressed at AOUT. Before accessing this menu it is important to remember that
to assure proper coordination and retransmission, the parameters are programmed as a percentage
of the analog output full scale value according to the type selection. I will hit enter to
push enter and then up to find the next programming section of SOUT. This is the serial port output.
I can choose to configure a serial port address by pushing enter and ADD will appear. I can
use the escape key to toggle between the digits and select the proper value of an instrument's
address from 1 to 247. I will push enter to confirm and BDR will be displayed on the panel
meter. This is the selection baud rate. I can use the arrow keys to select the desired
baud rate in kilobits per second. I will push enter to confirm and up to the last program
sequence. This program sequence is CND, the external command from the input module, terminals
6 and 7. I will push enter and I can choose C1 for the hold function, C2 for disabling
the keypad, or C3 for the Reset of Latch Alarms. I will choose one and push enter to confirm.
Carlo Gavazzi's UDM 35 and 40 Series Universal Digital Panel Meter, along with thousands
of other products and services are available at galco.com.