AutomationDirect ProSense DPM3-P Series User manual

ProSenSe DPM3-P SerieS
Digital Panel Meter
Frequency / tachoMeter /
rate / counter /
chronoMeter MoDeS
Models:
uSer Manual
DPM3-P-H DPM3-P-L
DPM3-P-A2R-H DPM3-P-A2R-L
Scan or click the QR code for a series of Configuration and Programming
videos for the ProSense DMP Series Panel Meters

DPM3-P User Manual, 1st Edition
User Manual - DPM3-P Series Digital Panel Meters
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In this Chapter...
General Information......................................................................................................4
Package Contents.........................................................................................................4
Recycling Instructions...................................................................................................4
General Safety Considerations ......................................................................................4
Symbols Identification ..................................................................................................4
Maintenance ................................................................................................................5
Technical Support ........................................................................................................5
Agency Certifications....................................................................................................5
Device Description.........................................................................................................6
Dimensions and Mounting............................................................................................7
Installation....................................................................................................................7
Wiring Terminals............................................................................................................8
Wiring Examples ..........................................................................................................10
Display and Keypad.....................................................................................................11
Configuration...............................................................................................................12
Programming numerical values ..................................................................................12
Input Configuration.....................................................................................................13
Counter Mode Programming Diagram.......................................................................14
Counter Configuration ................................................................................................14
Inputs.........................................................................................................................14
Pulse Measurement ....................................................................................................14
Variables.....................................................................................................................15
Display .......................................................................................................................15
Counter Mode Programming......................................................................................16
Counter Mode Display Programming Diagram..........................................................17
Process Variable Options ............................................................................................17
Totalizer Option .........................................................................................................18
Display Format (Totalizer)...........................................................................................18
Other Display Options................................................................................................19
Chronometer Mode Programming Diagram..............................................................19
Chronometer Mode Display Programming.................................................................19

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Chronometer Configuration .......................................................................................20
Inputs.........................................................................................................................20
Measure .....................................................................................................................20
Display .......................................................................................................................20
Offset .........................................................................................................................20
Run Mode Programming............................................................................................21
Frequency and Tachometer Modes Configuration ....................................................22
Inputs.........................................................................................................................22
Measure .....................................................................................................................22
Display .......................................................................................................................22
Totalizer .....................................................................................................................22
Direction of Rotation Indication..................................................................................22
Frequency and Tachometer Modes Programming Diagram........................................23
Frequency and Tachometer Configurations ................................................................23
Tachometer Duty (PWM)............................................................................................25
Frequency and Tachometer Modes Display Programming Diagram............................26
Process Variable Options ............................................................................................26
Total, Max and Min Visualization................................................................................28
Logic Functions ..........................................................................................................28
Logic Functions Menu ................................................................................................29
Table of programmable functions...............................................................................30
Configuration Lock Out...............................................................................................31
Lock-out menu diagram .............................................................................................32
Output Options............................................................................................................33
Relay Configuration....................................................................................................33
Description of Relay Operation...................................................................................33
Relay Programming in Frequency or Tachometer Modes Diagram .............................34
Relay Programming in Counter or Chronometer Modes Diagram ..............................35
Description of Relay Operation in Counter or Chronometer Modes or with Active
Totalizer in Frequency or Tachometer Modes .............................................................36
Direct access to the relay setpoints value programming.............................................38
Analog output............................................................................................................39
Analog output menu diagram ....................................................................................39
Return to Factory Configuration .................................................................................40
Technical Specifications...............................................................................................41

DPM3-P User Manual, 1st Edition
User Manual - DPM3-P Series Digital Panel Meters
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General Information
Package Contents
• DPM3-P Series digital panel meter
• Quick start guide
• Mounting panel accessories (a sealing gasket and 2 fixing clips)
• Wiring accessories (plug-in terminal block connectors and 2 key tools for wire insertion)
• 4 adhesive engineering unit label sheets
Recycling Instructions
This electronic instrument is covered by the 2012/19/UE European Directive so, it is properly
marked with the crossed-out wheeled bin symbol that makes reference to the selective collection
for electrical and electronic equipment which indicates that at the end of its lifetime, the final
user cannot dispose of it as unsorted municipal waste.
In order to protect the environment and in agreement with the European legislation regarding
waste of electrical and electronic equipment from products put on the market after August 13,
2005, the user can give it back, without any cost, to the place where it was acquired to proceed
to its controlled treatment and recycling.
General Safety Considerations
All instructions and guidelines for the installation and manipulation that are present in this
manual must be considered to ensure personal safety and to prevent damage to either the
instrument or any equipment connected to it.
Safety of any equipment incorporated to this instrument is the responsibility of the system
installer.
If this electronic indicator is used in a manner not specified by the manufacturer in this manual,
the protection provided by the instrument may be impaired.
Symbols Identification
Warning: Potential risk of danger.
Read complete instructions when this symbol appears in order to know the potential risk and
know how to avoid it.
Warning: Risk of electric shock.
Instrument protected by double isolation or reinforced isolation.

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User Manual - DPM3-P Series Digital Panel Meters
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Maintenance
To ensure instrument accuracy, it is recommended to check its performance according to the
technical specifications listed in this manual.
For front cover cleaning, just wipe with a damp cloth and neutral soap product. DO NOT USE
SOLVENTS!
Technical Support
We strive to make our manuals the best in the industry. We rely on your feedback to let us
know if we are reaching our goal. If you cannot find the solution to your particular application,
or, if for any reason you need technical assistance, please call us at:
1-800-633-0405
Our technical support group will work with you to answer your questions. They are available
Monday through Friday from 9:00 A.M. to 6:00 P.M. Eastern Time. We also encourage you
to visit our web site where you can find technical and non-technical information about our
products and our company.
www.AutomationDirect.com
Agency Certifications

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User Manual - DPM3-P Series Digital Panel Meters
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Device Description
The ProSense DPM3-P series offers a simple, feature packed digital display for counter,
chronometer, frequency, tachometer, rate, and pulse width modulated (PWM) applications.
The DPM3-P has a 5-digit, 14mm character height, tri-color red, green or amber LED,
accepts input from AC voltage, magnetic sensors, NPN/PNP sensors, NAMUR sensors,
TTL/24V encoders, or switched contacts, and provides selectable sensor excitation voltages.
Models are available with two SPDT relay outputs that can be set to activate on an increasing
or decreasing input signal with hysteresis or time delay operation in tachometer, rate, and
frequency modes as well as pulsed or latched operation in counter and chronometer modes.
Additionally the display color can be set to change on relay operation. Models are also
available with a 4-20mA analog output. The meter is powered from an external AC or DC
power supply. The 1/8 DIN housing is easy to install in a panel and the meter face has an
IP65 rating. Configuration parameters can be totally or selectively locked out to prevent
unauthorized or accidental changes to the meter’s operation. Other features include memory
and reset of minimum (valley) and maximum (peak) display values, start/stop in chronometer
mode or stop in counter mode, and display brightness adjustment. ProSense digital panel
meters are backed by a 3 year warranty.
• 96 x 48mm 1/8 DIN
• 5 digit (-99999 to 99999) tri-color (red, green, amber) LED display
• Selectable decimal point
• Counter/Chronometer/Frequency/Tachometer (RPM/Rate/PWM) modes
- AC voltage
- Magnetic sensor
- NAMUR sensor
- NPN/PNP sensor
- TTL/24V encoder
- Switched contact
• AC or DC powered
• Optional 4-20mA analog output
• Optional (2) Form C SPDT
Activation on increasing or decreasing input signal
Hysteresis or time delay operation (frequency and tach modes)
Pulsed or latch operation (counter and chronometer modes)
Display color change on relay operation
• Total or selective configuration lock out
• Programmable functions include:
Minimum (valley) and maximum (peak) value memory
Minimum (valley) and maximum (peak) value reset
Start/Stop in chronometer mode or Stop in counter mode
• Display brightness adjustment
• 3 year warranty

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Dimensions and Mounting
(2) Fixing clips
Sealing gasket
DPM3 Meter
Panel mounting surface
Dimensions mm [in]
Installation
To install the meter, prepare a 92mm x 45mm panel cut-out and slide the unit inwards making
sure to place the sealing gasket between the front side panel and the front bezel.
While holding the unit in place, put the fixing clips on both sides of the case and slide them
through the guide tracks until they reach the panel at
the rear side.
Press slightly to fasten the clips to the latching slots
on the case and get the unit fully assembled and close
fitted to achieve a good seal.
To remove the meter from the panel, pull the rear fixing
clips latching tabs outwards until they are disengaged,
then slide the fixing clips back over the case.
Installation
Dimensions 96 x 48 x 83.1mm (1/8 DIN)
Panel Cutout 92 x 45mm
(Max. panel thickness 10mm)
Case Material Polycarbonate UL 94 V-0

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Wiring Terminals
CN2 and CN3 Terminals CN1, CN4, CN5
and CN6 Terminals
CN6
Analog Output
1(-) 4-20mA
2 (+) 4-20mA
CN5
Relay 1 SPDT
1NO1
2CM1
3 NC1
CN4
Relay 2 SPDT
4NO2
5CM2
6NC2
DPM3-P-A2R-H & DPM3-P-A2R-L
NO: Normally open, CM: Common,
NC: Normally closed
Insertion Tool (included with meter)
Insert wires into the proper terminal
while using the insertion tool to open
the clip inside the connector. Release
the insertion tool to fix wire to the
terminal.
Insertion Tool (included with meter)
Insert wires into the proper terminal
while using the insertion tool to open
the clip inside the connector. Release
the insertion tool to fix wire to the
terminal.
CN2
Signal Inputs
1Not used
2(+) 20V Excitation
3(+) 8.2 V Excitation for NAMUR
sensors
4(-) Common excitation / signal
5Signal B input
6Signal A input
7Not used
8High voltage input (300VAC max.)
CN3
Logic Functions
1Common
2Reset Process
3Reset Totalizer
4 Hold
Polarity insensitive for
DC power
CN1
AC Supply DC Supply
1 Line 1 VDC
2 Neutral 2 VDC
Terminals
Connector CN1 CN2 CN3 CN4 & CN5 CN6
Wire cross section 0.08 to 2.5mm²
(28 to 12 AWG)
0.08 to 0.5mm²
(28 to 20 AWG)
0.08 to 0.5mm²
(28 to 20 AWG)
0.08 to 2.5mm²
(28 to 12 AWG)
0.08 to 2.5mm²
(28 to 12 AWG)
Strip length 8 to 9mm 5 to 6mm 5 to 6mm 8 to 9mm 8 to 9mm
Manufacturer Wago 231-
202/026-000 Wago 733-108 Wago 733-104 Wago 231- 303/026-000
Wago 231-
302/026-000
Cage clamp
connection
Insertion tool
or screwdriver
with 0.5 mm x
3.0 mm blade
Insertion tool
or screwdriver
with 0.3 mm x
1.8 mm blade
Insertion tool
or screwdriver
with 0.3 mm x
1.8 mm blade
Insertion tool
or screwdriver
with 0.5 mm x
3.0 mm blade
Insertion tool
or screwdriver
with 0.5 mm x
3.0 mm blade
CN1 CN2 CN3
1 2 1 2 3 4 5 6 7 8 1 2 3 4
1
2
3
4
5
6
CN4 CN5
CN6
1
2
Refer to the instructions in this manual to preserve safety protections.

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WARNING: If this instrument is not installed and used in accordance with these
instructions, the protection provided against hazards may be impaired.
To meet the requirements of EN 61010-1 standard, where the unit is permanently connected to
main supply, it is obligatory to install a circuit breaking device easily reach by the operator and
clearly marked as the disconnecting device.
To guarantee electromagnetic compatibility, the following guidelines should be kept in mind:
• Power supply wires should be separately routed from signal wires and never run in the same conduit.
• Use shielded cable for signal wiring.
• Cables section should be ≥0.25 mm².
Before connecting signal wires, signal type and input range should be verified to be within the
right limits. Do not connect simultaneously more than one input signal to the meter.
CAUTION: Connect only one input signal range to the meter. Hazardous signal levels may be
present on unused inputs.
CAUTION: All outputs are optoisolated with respect to input signal and power supply.
2500Vrms for 1 minute to signal terminals (CN2) and relays terminals (CN3 or CN4) and
2500Vrms for 1 minute to signal terminals (CN1) and relays terminals (CN3 or CN4). Be
certain that the ratings are not exceeded, voltages should be verified by a high-voltage meter
before wiring the meter.

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Wiring Examples
CN2
1 8
MAGNETIC SENSOR
B INPUT A INPUT
CN2
1 8
SWITCHED CONTACT
B INPUT A INPUT
1
CN2
8
NAMUR SENSOR
B INPUT A INPUT
CN2
1 8
ENCODER
EXC COMM OUTB OUTA
ENCODER
CN2
1 8
PNP/ NPN SENSOR
EXC OUT COMM
B INPUT
EXC OUT COMM
A INPUT
CN2
1 8
10- 300 Vac (only 1 input)
WARNING!:
Never connect a dangerous voltage
to PIN 4 of CN2 (input common).

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Display and Keypad
PROG
MIN
MAX
TARE
1
2
3
4
ENTER
DATA MAX/MIN
4
1
2
3
5
6
789
10
11
12
13
RESET
OFFSET TOTAL
Programming Panel
#Description Run Mode Programming Mode
1TARE Indicates that there is an offset
value programmed ---
2MAX
Solid indicates rotation sense or
count polarity; Blinking indicates
visualization of a Max value
Indicates rotation sense (polarity)
3MIN
Solid indicates rotation sense or
count polarity; Blinking indicates
visualization of a Min value
Indicates rotation sense (polarity)
4PROG --- Indicates programming mode
5DISPLAY Displays the input variable Displays programming
parameters
6RESET/OFFSET
KEY
In Tachometer mode reset of MAX/
MIN/ TOTAL (if present on display)
In Counter mode Reset / OFFSET
(starts measuring)
- To increase blinking digit value
- Direct access to Setpoints value
7MAX-MIN/TOTAL
KEY
1st push allows TOTALIZER
visualization (if activated) 2nd push
allows Max visualization (only
Tachometer) 3rd push allows Min
visualization (only Tachometer)
Following push: back to current
value.
To move blinking digit
8ENTER KEY
To enter programming menu
or to visualize parameters if
programming is locked
- To step forward in programming
menu
- To validate programmed values
- To exit programming menu
9Free space for units
label ---
10 LED Output 4 --- ---
11 LED Output 3 --- ---
12 LED Output 2 Activation Output 2 Programming output 2
13 LED Output 1 Activation Output 1 Programming output 1

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Configuration
When power is applied to the meter, a display test begins automatically to check the function of
the LED’s and digits. Once this test is finished the display shows the internal software version
and then the unit goes to RUN mode.
Configuration follows a structure composed of a number of menus and submenus. By pressing
the ENTER key, the display show “Pro”. Pressing the SHIFT key repeatedly provides access
to the main menu level which includes menus for input configuration (CnInP), display
configuration (CndSP), relay configuration if present (SEtP), analog output configuration if
present (Anout), logic functions configuration (LoGIn). Press ENTER to access the submenus
under each main menu.
If configuration has been totally locked-out, when pressing ENTER to access the main menu
level, the display shows dAtA instead of Pro. This indicates that it is only possible to see
programmed information and that it is not allowed to modify any parameter from the entire
configuration. In this visualization mode, the meter automatically switches back to RUN mode
after 15 seconds since the last key press.
-


1

Input
Menu


2

3

4

5

Display
Menu
Relay
Configuration
Menu
(if equipped)
Analog
Output
Menu
(if equipped)
Logic
Functions
Menu
ENTER: Vertical displacement.
UP: Changes active digit.
SHIFT: Horizontal displacement.
Programming Keys
The progress through the programming routines is done by pressing ENTER key. In general,
push SHIFT key a certain number of times to select an option and push ENTER key to validate
the change and move forward to the next step of the program.
Programming numerical values
When the parameter is a numerical value, the display will show the first of the digit to be
programmed blinking.
Digit selecting: Press repeatedly the SHIFT key to shift from left to right over all the display
digits.
Changing the digit value: Press repeatedly the UP key to increase the value of blinking digit
until it has the desired value.
The minus sign is programmed depending on the variable type. A variable that represents the
value of an input will be able to take a value in the range -99999 to 99999, without taking into
account the decimal point. When a digit is selected it shows values from (0) to (9), and then
(-1), (-), and comes back to show values from 0 to 9. A variable that represents a display value

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will be able to take a value in the range -99999 to 99999, without taking into account the
decimal point. In these case the first digit shows 0, 1, -1, 2, 3 or -.
Completion of each submenu routine returns the meter to Pro mode. To save data entered or
changed during configuration press the ENTER key while in Pro mode. StorE will be displayed
for a few seconds while all of the configuration data is stored in memory. The meter will then
return to RUN mode.
Input Configuration
The figure below shows the input configuration menu. The Input Type table is used to
correlate the integer assigned to that input type. After selecting the input type, the mode and its
corresponding settings are selected.
ENTER: Vertical displacement.
UP: Changes active digit.
SHIFT: Horizontal displacement.
Programming Keys
CnInP
- 1 -
- 2 -
- 3 -
- 4 -
- 5 -
- 6 -
- 7 -
MODE
INPUT TYPE
1
10 to 300 VAC
2
Magnetic Sensor
3
NAMUR Sensor
4
PNP Sensor
5
NPN Sensor
6
TTL/ 24 V Encoder
7
Switched Contact

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Counter Mode Programming Diagram
ModE
Count
CHron
FrEC
tACH
uP
do
InA
InAB
-Pro-
PHASE
updo
IndEP
dIrEC
ENTER: Vertical displacement.
UP: Changes active digit.
SHIFT: Horizontal displacement.
Programming Keys
Counter Configuration
Inputs
The counter has two inputs, the A input receives the pulses to count, and the B input serves
to inhibit the count or to change the count direction, except in case of bidirectional counter
IndEP where the second input is also used to count pulses.
Pulse Measurement
The pulses applied to the input are detected on the rising edge, except for type 5(NPN) and
type 7(Switched contact) that detect the falling edge, and immediately update the value of the
counter and the status of the alarms if existed.
The display refreshes every 100 ms.
In a power loss, the meter saves the count value reached internally.

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Variables
The main variable of the counter is the PROCESS variable that is the number of pulses
registered from the last RESET operation.
If the totalizer option is enabled, there are PROC and TOTAL variables.
The TOTAL variable counts the total number of pulses received, independently of the reset
operations that may take place in the process display.
Display
Process: The limits of the display are 99999 and -99999. When the meter exceeds 99999, it
shows oVEr, and when it falls below -99999, it shows -oVEr.
The positive sign is indicated by the red LED Up arrow located on the left side of the display
and the negative sign is indicated by the red LED Down arrow located on the left side of the
display.
The decimal point can be located in any of the digits of the display.
Total: The limits are 99999999 and -9999999. When the meter exceeds these limits the
display shows the indications oVEr or -oVEr.
The negative sign, when the value has less than five digits, appears in the most significant digit
of the display. The negative sign is indicated by the MIN LED.
When the total value has more than five digits, the display alternates the 4 digits high order
part and the 4 digits low order part (the letters ‘H’ and ‘L’ in the auxiliary digit indicate which
part is on display.
The decimal point can be located in any of the digits of the low part.

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Counter Mode Programming
The input setup is available on the ‘CnInp’ module which allows configuration of the counter
mode and totalizer operation.
Counter Modes
uP: Up count
do: Down count
In-A: Allows count on A input regardless of input B
InA-B: Pulses applied at the A input are added or subtracted to the count display if the B
input is at low level and being used as inhibited input
uP-do IndEP: Pulses applied at the A input are added to the count display while pulses at the
B input are subtracted
uP-do dIrEC: When B input is at low level, the pulses applied at the A input increment the
count. When B input is at high level, the pulses at the A input decrement the count
uP-do PHASE: The rising edges at the A input increment the count if the B input is at low
level. The falling edges at the A input decrement the count if the B input is at low
MODE
do
I
N
A-B U
NIDIRECTIONAL COUNTER
A counts down if B is '0'. B inhibits count.
8
process
input A
input B
7
6
5
4
MODE
U
P-do
D
I
R
EC B
IDIRECTIONAL COUNTER
A counts up if B is ‘0’ and counts down if B is ‘1’
1
process
input A
input B
2
3
4
3
-1
2
0
MODE
U
P-do
PHASE B
IDIRECTIONAL COUNTER
Rising edge of A counts up if B is ‘0’. Falling edge of A
counts down if B is ‘0’.
1
process
input A
input B
2
3
1
2
1
0
2
MODE uP InA-B
U
NIDIRECTIONAL COUNTER
A counts up if B is '0'. B inhibits count.
1
process
input A
input B
2
3
4
5
MODE
U
P-do I
ND
EP B
IDIRECTIONAL COUNTER
A counts up. B counts down
1
process
input A
input B
0
-1
2
3
0
1
0
1

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Counter Mode Display Programming Diagram
CndSP
ProC
totAL
-Pro-
dECP
oFFS
F.diU
FACt
no
ModE
YES
dECP
dISPL
F.MuLt
-Pro-
rEL
AbS
oFFS
brIGH
- Hi -
- Lo -
CoLor
run
run
run
ProG
ProG
ProG
totAL
totAL
totAL
ECo
- on -
- oFF -
green amber red
88888
88888.
±00000
±H0000
10000
00001
00001.
10
ENTER: Vertical displacement.
UP: Changes active digit.
SHIFT: Horizontal displacement.
Programming Keys
Process Variable Options
Decimal Point
The decimal point indication helps to read the display in the desired engineering units.
The decimal point has no real value, i.e. the digits to the right of the decimal point are not
actually decimals. To read values with resolution to the desired decimal places is achieved by a
combination of decimal point and scaling factor.
For example, suppose a system that provides 100 pulses per 2 meters length of a material. To
display length in meters and centimeters, you should program a factor of 2 (1 pulse = 2 cms)
and place the decimal point to the third digit.
Offset
Offset is the value the counter takes in a reset event. By default it is zero. Configurable in the
menu ProC and total.
Multiplication / Division Factor
The Multiplication factor (F.MuLt) or divisor (F.dIU) is programmable from 0.0001 to
99999.
(It is not possible to program a factor = 0).
After programming the value including decimals,
press and the intermittent decimal point will appear to place your position on the display.

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Totalizer Option
The totalizer is optional and has a decimal point and multiplying factor independent of
the partial counter. The totalizer indication range is from 99999999 to -99999999. The
decimal point has a maximum of five positions, from digit 0 to 4. The multiplying factor is
programmed in the same way as that of the partial counter (0.0001 to 99999). The totalizer
has a programmable offset.
The number of inputs, mode and counting direction are those that have been selected for the
partial counter. Each pulse increases exactly both counters, although the indication can vary
from one to another if the multiplying factor is different.
Totalizing Operating Modes: relative or absolute Relative (rEL): Same as partial counter
operation. Absolute (AbS): Always add input impulses
Visualization of the Totalizer
Pressing the TOTAL key, if it is activated, will present in the format indicated below the total
value accumulated since the last reset.
Display Format (Totalizer)
When the value does not exceed five digits, the red LED will be ON next to the up arrow for
positive or the red LED will be ON next to the down arrow for negative.
(positive)
(negative)
When the accumulated value exceeds four digits, the display alternates a 4 digit high order
part (with the letter ‘H’ in the auxiliary digit) and a 4 digit low order part (indicated by the
letter ‘L’ in the auxiliary digit).
(The switching between high and low order parts takes place at a rate of approximately 2s
each part).

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Other Display Options
In the sub-menu (dISPL) the following display modes can be selected:
Brightness: Hi (normal luminosity) / Lo (low luminosity)
Color: It is possible to assign a different color to:
(run) process display
(totAL) display totalizer
(ProG) display programming
Selected by the key the desired color.
ECO: In ECO mode the display will turn off in the preset interval for energy saving.
If you select (On) when you press , two digits appear with the time in minutes that it will
take the display to go off if you have not acted on any key. This time can be modified up to
99m with the and keys.
To accept the value press and we will return to Pro.
Chronometer Mode Programming Diagram
ModE
Count
CHron
FrEC
tACH
-Pro-
InA
InAb
Hr
H.MM
M.SS
do
uP
0.01 S
ENTER: Vertical displacement.
UP: Changes active digit.
SHIFT: Horizontal displacement.
Programming Keys
Chronometer Mode Display Programming
Same as Counter mode, except that:
1 - in PrOC> neither the decimal point nor the multiplying factor are activated
2 - in totAL> the sign LEDs of the offset are not activated
3 - in totAL> the counting mode rEL / AbS does not appear

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User Manual - DPM3-P Series Digital Panel Meters
20
Chronometer Configuration
Inputs
The meter has two inputs for the START and STOP signals that provide different types of
time measurement.
There are two selectable operating modes:
mode In-A, that allows to measure the width of a pulse,
t
mode In-AB, that is used to measure the difference between two signals
t
Measure
Time measurement is initiated on a rising edge of the START input. This starts up an internal
counter which is controlled by a high precision quartz crystal clock.
The STOP signal suspends the internal count keeping the value of the counter to the START
of following time measurement cycle.
The counter is set to zero in a RESET operation.
In a disconnection from the power source, the meter saves the count value reached internally.
The measured value, and the alarms if they exist, is updated in each minimum unit of the
selected magnitude. Display refresh: every 100ms.
Display
The display can not be scaled, it only reads time in the units selected according to the
programmed time range. The decimal point appears at a fixed position according to time
range.
Offset
An offset value can be programmed for example to count down to zero from the preset time
value.