Omega DPF20 Series User manual

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DPF20 Series
Panel Meter for
Frequency, Rate, Total
or Period Counter
6-Digit, 1⁄8DIN Panel Mount
TM
Shop online at
omega.com
User’s Guide

2
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For Other Locations Visit omega.com/worldwide

3
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4
DPF20 Frequency, rate, total or period counter Instruction Manual
1. Panel meter DPF20
Counter, ratemeter and periodmeter, 96 x 48 mm (1/8 DIN)
Panel meter 96 x 48 mm (1/8 DIN) and 6 digits with 14 mm digit height,
congurable with 5 impulse counter modes (see secon 1.2), 2 rate-
meter modes (see secon 1.3) and a 1 periodmeter mode (see secon
1.4).
Highly congurable, accepts all types of sensors (NPN, PNP, push-
pull, Namur, inducve, pick-up, mechanical, TTL, CMOS, ...) including
quadrature signals (single and bidireconal encoder signals).
Reading from 999999 to -199999 with decimal point, scalable read-
ing with congurable mulplier factor (1 to 999999) and congurable
divider factor (1 to 999999). Includes internal pull-up and pull-down
resistors, congurable trigger levels, detecon by rising or falling edge,
excitaon voltage congurable from 5 Vdc to 18 Vdc.
Opons for output and control with 1, 2 and 3 relays, transistor out-
puts, SSR drive controls, isolated analog outputs, communicaons in
Modbus RTU, RS-485 ASCII and RS-232. Special opons with 4 and 6
relay outputs.
Independent alarms congurable as maximum or minimum, with 1 or
2 setpoints per alarm, hysteresis, independent acvaon and deac-
vaon delays and control for inverted relay.
Front protecon IP65. Connecons by plug-in screw terminals. For in-
dustrial applicaons.
• ‘Fast access’ menu to selected funcons, accessible with key UP (5)
(see secon 1.19.12)
• Funcon ‘On power up’ for system protecon on rst ‘cold’ start-up
or automac reset (see secon 1.19.15)
• Special ‘FAST’ mode for fast counng applicaons (see secon 1.16)
• Special ‘SLOW’ mode for slow ratemeter applicaons (low frequency
applicaons) (see secon 1.15)
• Direct conguraon for most usual sensor, at the ‘SnSr / Auto’ menu
(see secon 1.19.10)
• Funcon ‘Trigger Sense’ helps to detect the correct trigger level (see
secon 1.13)
Mulple display lters, memory for maximum and minimum reading,
password protecon, 5 brightness levels.
Index
1. Panel meter DPF20 . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 How to order . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Impulse counter modes . . . . . . . . . . . . . . . . . . 5
1.3 Ratemeter modes. . . . . . . . . . . . . . . . . . . . . . 5
1.4 Periodmeter mode . . . . . . . . . . . . . . . . . . . . . 5
1.5 Funcons included . . . . . . . . . . . . . . . . . . . . . 5
1.6 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7 Power connecons . . . . . . . . . . . . . . . . . . . . . 6
1.8 Sensor conguraon and connecons . . . . . . . . . . 6
1.9 Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.10 Signal connecons . . . . . . . . . . . . . . . . . . . . 6
1.11 Technical specicaons . . . . . . . . . . . . . . . . . . 7
1.12 Mechanical dimensions (mm) (in) . . . . . . . . . . . . 7
1.13 Funcon ‘Trigger Sense’ . . . . . . . . . . . . . . . . . 8
1.14 Funcon ‘cycle counter’ . . . . . . . . . . . . . . . . . 8
1.15 ‘SLOW’ mode . . . . . . . . . . . . . . . . . . . . . . . 8
1.16 ‘FAST’ mode . . . . . . . . . . . . . . . . . . . . . . . . 8
1.17 How to operate the menus. . . . . . . . . . . . . . . . 9
1.18 Messages and errors . . . . . . . . . . . . . . . . . . . 9
1.19 Conguraon menu. . . . . . . . . . . . . . . . . . . . 10
1.19.1 Inial set-up . . . . . . . . . . . . . . . . . . . . . .10
1.19.2 Conguraon for ‘cn.1’ . . . . . . . . . . . . . . . .10
1.19.3 Conguraon for ‘cnq.2’ . . . . . . . . . . . . . . . 11
1.19.4 Conguraon for ‘cnI.3’ . . . . . . . . . . . . . . . . 11
1.19.5 Conguraon for ‘cnc.4’ . . . . . . . . . . . . . . . 11
1.19.6 Conguraon for ‘cnd.5’ . . . . . . . . . . . . . . . 12
1.19.7 Conguraon for ‘rt.6’ . . . . . . . . . . . . . . . . 12
1.19.8 Conguraon for ‘rtq.7’. . . . . . . . . . . . . . . . 12
1.19.9 Conguraon for ‘Prd.8’ . . . . . . . . . . . . . . . 13
1.19.10 Sensor conguraon. . . . . . . . . . . . . . . . . 13
1.19.11 Alarms . . . . . . . . . . . . . . . . . . . . . . . . 15
1.19.12 Fast access . . . . . . . . . . . . . . . . . . . . . . 16
1.19.13 Super fast access . . . . . . . . . . . . . . . . . . . 16
1.19.15 Menu ‘On Power Up’ . . . . . . . . . . . . . . . . 16
1.19.14 Menu ‘Key LE’ . . . . . . . . . . . . . . . . . . . . 16
1.19.16 Menus ‘Overrange / underrange’. . . . . . . . . . 17
1.19.17 Le zeros . . . . . . . . . . . . . . . . . . . . . . .17
1.19.18 Vexc. control . . . . . . . . . . . . . . . . . . . . .17
1.19.19 Funcon ‘Password’ . . . . . . . . . . . . . . . . .17
1.19.20 Factory reset . . . . . . . . . . . . . . . . . . . . .17
1.19.21 Firmware version. . . . . . . . . . . . . . . . . . . 17
1.19.22 Brightness . . . . . . . . . . . . . . . . . . . . . . 17
1.19.23 Access to oponal modules . . . . . . . . . . . . . 17
1.20 Full conguraon menu . . . . . . . . . . . . . . . . . 18
1.21 Factory conguraon . . . . . . . . . . . . . . . . . . .21
1.22 To access the instrument . . . . . . . . . . . . . . . . .22
1.23 Modular system . . . . . . . . . . . . . . . . . . . . . .22
1.24 Precauons on installaon . . . . . . . . . . . . . . . .23
1.25 CE declaraon of conformity . . . . . . . . . . . . . . . 23
2. Output and control modules . . . . . . . . . . . . . . . . . 24
2.1 Módules R1, T1 and SSR . . . . . . . . . . . . . . . . . .24
2.2 Module AO . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.2.1 Conguraon menu . . . . . . . . . . . . . . . . . . 26
2.2.2 Error codes . . . . . . . . . . . . . . . . . . . . . . . 26
2.2.3 Factory conguraon . . . . . . . . . . . . . . . . . . 26
2.3 Module RTU. . . . . . . . . . . . . . . . . . . . . . . . . 27
2.3.1 Accessible registers . . . . . . . . . . . . . . . . . . . 27
2.3.2 Conguraon menu . . . . . . . . . . . . . . . . . . 28
2.3.3 Excepon codes . . . . . . . . . . . . . . . . . . . . . 28
2.3.4 Descripon and example for Modbus RTU registers 29
2.4 Module S4. . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.4.1 Accessible registers . . . . . . . . . . . . . . . . . . . 30
2.4.2 Conguraon menu . . . . . . . . . . . . . . . . . . 31
2.4.3 Factory conguraon . . . . . . . . . . . . . . . . . . 31
2.4.4 Frame types . . . . . . . . . . . . . . . . . . . . . . .32
2.4.5 Frame structure . . . . . . . . . . . . . . . . . . . . . 32
2.4.6 Error codes . . . . . . . . . . . . . . . . . . . . . . . 32
2.4.7 Frame examples. . . . . . . . . . . . . . . . . . . . . 33
2.4.8 CRC calculaon . . . . . . . . . . . . . . . . . . . . .33
2.5 Module S2. . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.6 Modules R2, R4 and R6. . . . . . . . . . . . . . . . . . . 34
2.6.1 Conguraon menu . . . . . . . . . . . . . . . . . . 35
2.6.2 Factory conguraon . . . . . . . . . . . . . . . . . . 35
3. How to open and close. . . . . . . . . . . . . . . . . . . . . 36
3.1 How to open the housing . . . . . . . . . . . . . . . . . 36
3.2 How to close the housing . . . . . . . . . . . . . . . . . 37

5
DPF20 Frequency, rate, total or period counter Instruction Manual
1.1 How to order
1.2 Impulse counter modes
The instrument allows for 5 selectable impulse counter modes :
• Counter (‘cn.1’) (see secon 1.19.2)
• Counter quadrature (‘cnq.2’) (see secon 1.19.3)
• Counter with inhibion (‘cnI.3’) (see secon 1.19.4)
• Counter with control add / substract (‘cnc.4’) (see secon 1.19.5)
• Counter dierenal (‘cnd.5’) (see secon 1.19.6)
Congurable up or down counng, ‘reset’ at rear terminals, front key
and/or at alarm acvaon. Congurable ‘Preset’ value. Relay acva-
on and deacvaon delays.
Alarm funcons with ‘return to preset’ or ‘reset to 0’ generate cycles
of counng (instrument counts from ‘preset’ value to alarm value
in never ending cycle). The instrument provides memory of cycles
counter.
Scalable reading with congurable mulplier factor (1 to 999999)
and congurable divider factor (1 to 999999). Memory retenon in
case or power loss. Retains conguraon and last reading.
Counng frequency up to 250 KHz, in ‘FAST’ mode (see secon 1.16).
1.3 Ratemeter modes
In ratemeter mode the reading is proporonal to the measured fre-
quency. The instrument allows for 2 selectable ratemeter modes :
• Ratemeter (‘rt.6’) (see secon 1.19.7)
• Ratemeter quadrature (‘rtq.7’) (see secon 1.19.8)
The ratemeter mode has a single input channel, with scalable read-
ing. The quadrature ratemeter mode has 2 inpur channels available
for detecon of sense of turn when working with quadrature signals.
Scalable reading with congurable mulplier factor (1 to 999999)
and congurable divider factor (1 to 999999).
For low frequency applicaons, the ‘SLOW’ mode provides the best
response me for each applicaon (see secon 1.15).
Maximum frequency up to 500 KHz and minimum frequency down
to de 0.001 Hz (1 mHz) with ‘SLOW’ mode acve.
Reading is proporonal to the signal period. Scalable reading with
congurable mulplier factor (1 to 999999) and congurable divider
factor (1 to 999999).
For applicaons with long periods (slow frequencies), the ‘SLOW’
mode provides the best response me for each applicaon (see sec-
on 1.15).
1.4 Periodmeter mode
Funcons included Secon
‘Fast access’ yes 1.19.12
‘SLOW’ mode yes, for slow frequencies 1.15
‘FAST’ mode yes, for fast counng 1.16
Mulplier and divider from 1 to 999999 1.19.2
Reset congurable yes (front, rear and linked
to alarm acvaon)
1.19.14 and
1.10 and
1.19.11
Preset yes 1.19.2
Trigger level congurable 1.19.10
‘Trigger Sense’ funcon helps to set the trigger 1.13
Sensor selecon by menu 1.19.10
Cycle counter 1.14
Retenon memory yes, recovers with power 1.11
‘On Power Up’ yes 1.19.15
Excitaon voltage congurable 1.19.10
Display lters recursive
1.19.7 and
1.19.8 and
1.19.9
Memory max., min., cycles 1.19.12
Password blocks access to congu-
raon menu 1.19.19
Alarms
double setpoints
acvaon delays
deacvaon delays
hysteresis
inverted relays
locked alarms
1.19.11
Display brightness 5 levels 1.19.22
Table 1 - Funcons included
1.5 Funcons included
DPF20
Model Power Opon 1 Others
HV- - -
Opon 2
-
Opon 3
-
-R1 (1 relay)
-AO (analog output)
-RTU (Modbus RTU)
-S4 (RS-485)
-S2 (RS-232)
-T1 (1 transistor)
-SSR (1 SSR drive)
- (empty)
-HV (85-265 Vac/dc)
-LV (11/60 Vdc,
24 Vac, 48 Vac)
-NBT (no buons)
-GN (green led)

6
DPF20 Frequency, rate, total or period counter Instruction Manual
Buon ‘LE’
Earth connecon - Although a
terminal is provided for earth
connecon, this connecon is
oponal. The instrument does
not need earth connecon for
correct operaon nor for com-
pliance with the security regu-
laons. ~
~+
-
8 9 0
Fuse - To comply with security regulaon 61010-1, add to the power
line a protecon fuse acng as disconnecon element, easily acces-
sible to the operator and idened as a protecon device.
Power ‘H’ fuse 250 mA me lag
Power ‘L’ fuse 400 mA me lag
1.7 Power connecons
1.6 Front view
Buon ‘UP’
Logo
Alarms
Units
Buon ‘SQ’
‘Conguraon menu’
(see secon 1.19)
‘Fast access‘
(see secon 1.19.12)
1.8 Sensor conguraon and connecons
Signal
(see secon 1.10)
Opon 1 Opon 2Opon 3
Power
(see secon 1.7)
Detail of the plug-in screw terminals provided with
the instrument. The instrument is provided with all
terminals needed, both male and female.
1.9 Rear view
1.10 Signal connecons
Selecng one of the sensors listed at the
‘SnSr’ menu entry, will congure the sen-
sor parameters to the values indicated in
the table.
The table also indicates the typical con-
necons for each type of sensor. Param-
eters can be manually modied.
Connecons are indicated for a single sen-
sor connected to the channel A. For two
sensors (for inhibion control, quadrature
signal, etc) apply the same connecon cri-
teria also to channel B.
Note : indicated values are typical values.
Check the correct specicaons with your
sensor datasheet and adapt the required
conguraon and connecons as needed.
Sensor Connecons Pulls Vexc. Anrrebound
lter
Trigger
Mechanical contact 0 V channel A pull-up no 100 mSec. 2,5 Vdc
Namur channel A Vexc pull-down 9 Vdc no 3,0 Vdc
NPN 2 wires 0 V channel A pull-up 18 Vdc no 2,5 Vdc
NPN 3 wires 0 V channel A Vexc pull-up 18 Vdc no 2,5 Vdc
PNP 2 wires 0 V channel A pull-down 18 Vdc no 2,5 Vdc
PNP 3 wires 0 V channel A Vexc pull-down 18 Vdc no 2,5 Vdc
Push-pull 0 V channel A Vexc no 18 Vdc no 2,5 Vdc
TTL
CMOS
Pick-up
0 V channel A no 5 Vdc no 2,5 Vdc
AC<30 Vp
Inducve 0 V channel A no no no 0 Vdc
Table 2 - Conguraon and connecons for dierent types of sensors.
Front reset
(see secon 1.19.14)
Vexc.
12345
Canal B
Reset
0 V
Canal A

7
DPF20 Frequency, rate, total or period counter Instruction Manual
Digits
number of digits 6
led 7 segments led
color red or green
digit height 14 mm
Reading
maximum reading 999999
minimum reading -199999
decimal point congurable X.X.X.X.X.X.
overrange / underrange congurable to ash, reset or preset (see
secon 1.19.16)
display refresh 15 readings / second
memory retenon yes, retains reading value in case of pow-
er loss
Signals accepted NPN, PNP, Namur, pick-up, TTL, induc-
ve, mechanical, quadrature, ...
Max. Vdc at input ±30 Vdc
Input impedance 2K4 with pull-up or pull-down resistor
470K without pull resistor
Accuracy of the quartz ±0.01 %
Thermal dri 20 ppm / ºC
Excitaon voltage congurable
output voltage +18 Vdc, +15 Vdc, +9 Vdc, +5 Vdc
maximum current 70 mA
protecon yes, current limited to 70 mA
Frequencies counter modes (see Table 3)
ratemeter modes (see Table 4)
periodmeter modes (see Table 5)
Power
power ‘H’ 85 to 265 Vac/dc
power ‘L’ 11 to 60 Vdc and 24/48 Vac
isolaon* 2500 Ve with power ‘H’
1500 Ve with power ‘L’
*tested for 60 sec.
consumpon <1.5 W only meter
<4.0 W meter with opons
Conguraon 3 buons front keypad
Front protecon IP65
Output and control opons relays, analog outputs, serial communi-
caons (see secon 2)
Mechanical
mounng panel
connecons plug-in screw terminal
housing material ABS, polycarbonate (V0)
weight <150 grams
front size 96 x 48 mm (1/8 DIN)
panel cut-out 92 x 44 mm
depth from panel 91 mm (including terminals)
Temperature
operaon from 0 to +50 ºC
storage from -20 to +70 ºC
warm-up me 15 minutes
Counter Mode Frequency Secon
Counter
‘FAST’ mode acve max. 250 KHz 1.19.2
normal mode max. 9 KHz 1.19.2
Counter + inhibion max. 9 KHz 1.19.4
Counter + control A/S max. 9 KHz 1.19.5
Counter dierenal max. 9 KHz 1.19.6
Counter
quadrature
mode x1 max. 17 KHz 1.19.3
mode x2 max. 16 KHz 1.19.3
mode x4 max. 11 KHz 1.19.3
Table 3 - Maximum input frequency for counter modes
Ratemeter Mode Frequency Secon
Ratemeter
normal mode
max. 500 KHz 1.19.7
‘SLOW’ mode ac-
ve
max. 200 Hz
min. 1 mHz 1.19.7
Ratemeter
quadrature
mode x1 max. 17 KHz 1.19.8
mode x2 max. 16 KHz 1.19.8
mode x4 max. 11 KHz 1.19.8
Table 4 - Maximum and minimum input frequency for ratemeter modes
Periodmeter Mode Frequency Secon
Periodmeter
normal mode
max. 500 KHz 1.19.9
‘SLOW’ mode ac-
ve
max. 200 Hz
min. 1 mHz
(1000 sec.)
1.19.9
Table 5 - Maximum and minimum input frequency for periodmeter modes
1.12 Mechanical dimensions (mm) (in)
1.11 Technical specicaons
44
92
Panel
cut-out
16 8
75
96
48
(1.89)
(3.78) (0.63) (0.31)(2.95)
(1.74)
(3.63)

8
DPF20 Frequency, rate, total or period counter Instruction Manual
Special working mode for applicaons with low frequency signals.
Applies to ratemeter (‘rt.6’), ratemeter quadrature (‘rtq.7’) and peri-
odmeter (‘Prd.8’). The ‘SLOW’ mode allows to measure slow fre-
quencies down to 1 mHz (0,001 Hz) and is funconal up to 200 Hz.
The ‘SLOW’ mode provides the fastest response me possible for a
given applicaon, calculang the frequency and the period based on
the me between consecuve impulses.
The ‘SLOW’ mode needs to dene the parameter ‘maximum waing
me’ to a value between 1 and 1000 seconds. If this me expires
without a single impulse being received, the reading jumps to ‘0’
(both for ratemeter and periodmeter modes). The ‘GATE’ parameter
is not used if ‘SLOW’ mode is acve.
In ‘ratemeter quadrature’ (‘rtq.7’) mode, the acvaon of the
‘SLOW’ mode calculates the frequency based on the me between
consecuve impulses received on channel A, and calculates the
sense of turn (clockwise or counter-clockwise) by comparing each
impulse with the state of channel B. The ‘edge’ parameter is xed to
a ‘1--1’. Typical applicaon for quadrature frequency measure with
two inducve sensors at low frequency.
1.13 Funcon ‘Trigger Sense’
Special working mode for counter applicaons with high frequency
signals, up to 250 KHz. Applies only to the counter mode (‘cn.1’).
The acvaon of the ‘FAST’ mode congures the signal detecon by
rising edge. The rst edge detected, either rising or falling edge, aer
the instrument restart (power-up, or conguraon change) is used
for internal inializaon and will not be counted as impulse.
1.14 Funcon ‘cycle counter’ 1.15 ‘SLOW’ mode
The trigger level is automacally congured when selecng a sensor
from the ‘Sensor / Conguraon’ (‘SnSr’ / ‘Auto’) menu list. The trig-
ger level can be also manually modied from the ‘SnSr’ / ‘TrIG’ menu
entry. The selected value applies to channels ‘A’ and ‘B’ (the reset has
a xed trigger level at 2.5 Vdc).
At the ‘SnSr’ / ‘TrIG’ menu, the instrument shows the trigger level
and two vercal leds to the le. These leds inform in real me about
the status (‘0’ or ‘1’) of the input channels ‘A’ and ‘B’. When the led
switches between up and down posion, it indicates that impulses
are being detected at the input. If the instrument does not detect
impulses, the led posions remain xed.
Increase the trigger level pressing key ‘UP’ (5) and decrease press-
ing key ‘LE’ (3).
Vdc
Time
Trigger level
‘1’
‘0’
Signal detected
channel ‘A’
Status ‘1’ Trigger level
Status ‘0’
Leds of the ‘Trigger
Sense’ funcon
channel ‘B’
1.16 ‘FAST’ mode
Reading
Time
Setpoint 1
Impulse counter, with ‘reset to preset’
when setpoint 1 is reached
Preset
Time
Cycle counter
01
2
3
The counter modes allow to acvate a reset funcon (to ‘0’ or to
‘preset’ value) when an alarm setpoint is reached. With this congu-
raon, the instrument counts in cycles, counng from the instrument
preset value up to the alarm setpoint. Each cycle is counted and ac-
cumulated into an internal memory, accessible through the ‘fast ac-
cess’ menu (key UP (5) (see secon 1.19.12)).
To reset the memory of cycles, visualize the value at the ‘uP’ menu,
then press the (5) key and the ‘rSt’ message appears. Press (<) to
reset.

9
DPF20 Frequency, rate, total or period counter Instruction Manual
The instrument has two menus accessible to the user :
‘Conguraon menu’ (key SQ) (<)
‘Fast access’ menu (key UP) (5)
Conguraon menu
The ‘conguraon menu’ modies the conguraon parameters to
adapt the instrument to the applicaon needs. To access the ‘con-
guraon menu’ press for 1 second the SQ (<) key. This access can
be blocked by acvang the ‘Password’ (‘PASS’) funcon. While
operang the ‘conguraon menu’, the alarm status is ‘hold’ to the
status they had before accessing the menu, and the output and con-
trol modules remain in ‘error’ state. When leaving the ‘conguraon
menu’, the instrument applies a system reset, followed by a brief
disconnecon of the alarms and the output and control modules.
Funconality is then recovered.
For a detailed explanaon on the ‘conguraon menu’ see secon
1.19, and for a full view of the ‘conguraon menu’ structure see
secon 1.20.
‘Fast access’ menu
The ‘fast access’ menu is an operator congurable menu, providing
fast and direct access to the most usual funcons of the instrument
with a single key pad stroke. Press key UP (5) to access this menu.
See secon 1.19.12 for a list of funcons eligible for ‘fast access’ in
this instrument. The ‘Password’ (‘PASS’) funcon does not block ac-
cess to this menu. Accessing and modifying parameters in the ‘fast
access’ menu does not interfere with the normal funconality of the
instrument, and it does not generate any system reset when validat-
ing the changes.
Front key pad descripon
Key SQ (<) - press the SQ (<) key for 1 second to access the ‘con-
guraon menu’. Inside the menu, the SQ (<) key funcons as a
‘ENTER’ key. It selects and accesses the menu opon currently dis-
played. At menus with numerical value entries, it validates the num-
ber displayed.
Key UP (5) - the UP (5) key gives access to the ‘fast access’ menu.
Inside the menus, it moves vercally through the dierent menu op-
ons. At menus with numerical value entries, it modies the digit
selected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Key LE (3) - inside the menus, the LE (3) key funcons as the ‘ES-
CAPE’ key. It leaves the selected menu, and eventually, will leave the
whole menu. When leaving the ‘conguraon menu’ with the LE (3)
key, the changed parameters are acvated. At menus with numeri-
cal value entries, the LE (3) key allows to select the acve digit. To
modify the value of the selected digit use the UP (5) key.
Menu ‘rollback’
Aer 30 seconds without interacon from the operator, the instru-
ment will rollback and leave the ‘conguraon menu’ or the ‘fast ac-
cess’ menu. All changes will be discarded.
1.17 How to operate the menus
Messages and errors
‘Err.1’ incorrect password.
‘Err.2’ at ‘oPt.X’ menu entry. Installed module is not recognized.
‘Err.8’ excitaon voltage overload.
‘999999’ + ashing mode. Reading is in overrange.
‘-199999’ + ashing mode. Reading is in underrange.
Table 6 - Messages and error codes
The error messages are shown on display in ash mode.
Example of operaon inside the
‘conguraon menu’.
1. The SQ (<) key enters into the
‘conguraon menu’.
2. The SQ (<) key enters into the
‘Func’ opon menu.
3. The UP (5) key moves through
the menu opons.
4. The SQ (<) key selects the
desired range and returns to the
‘Func’ menu.
5. The LE (3) key leaves the ac-
tual menu level and moves to the
previous menu level.
6. The LE (3) key leaves the ‘con-
guraon menu’. Changes are ap-
plied and saved at this moment.
1.18 Messages and errors
Funcon mode
(2)
(3)
(3)
(3)
(3)
(3)
(4)
(4)
(4)
(4)
(5)
(5)
(5)
(5)
(3)
(3)
(6)
(6)
(1)

10
DPF20 Frequency, rate, total or period counter Instruction Manual
Decimal point
Press ‘SQ’ (<) for 1 second to access the ‘conguraon menu’.
For a descripon on how to operate inside the menus see secon
1.17. For a full vision of the ‘conguraon menu’ structure see
secon 1.20.
To congure the inial set up of the instrument, select the funcon
mode, the decimal point posion, scale the reading and congure
the mode selected and the sensor.
Enter the ‘Funcon mode’ (‘Func’) menu and select the desired func-
on, from the 5 counng modes, 2 ratemeter modes and the period-
meter mode available.
• ‘Counter’ (‘cn. 1’) - normal counter mode. Impulses input at chan-
nel A. Channel B disabled.
• ‘Counter quadrature’ (‘cnq.2’) - counter mode for quadrature sig-
nals. Impulses input at channel A and B, in quadrature.
• ‘Counter + inhibion’ (‘cnI.3’) - counter mode with inhibion con-
trol. Impulses input at channel A. Inhibion control on channel B.
• ‘Counter + control add / substract’ (‘cnc.4’) - counter mode with
control for add / substract. Impulses input at channel A. Control for
the add or substract funcon on channel B.
• ‘Counter dierenal’ (‘cnd.5’) - counter mode with dierenal
funcon. Impulses received at channel A add. Impulses received at
channel B substract.
• ‘Ratemeter’ (‘rt.6’) - ratemeter mode. Impulses input at channel
A. Channel B disabled.
• ‘Ratemeter quadrature’ (‘rtq.7’) - ratemeter mode for quadrature
signals. Impulses input at channel A and B, in quadrature.
• ‘Periodmeter’ (‘Prd.8’) - periodmeter mode. Impulses input at
channel A. Channel B disabled.
Access the ‘Decimal point’ (‘dP’) menu to select the decimal point
posion. Move the decimal point by pressing the ‘LE’ (3) key.
Congure the funcon mode selected (‘cnF.2’ to ‘cnF.8’). See sec-
ons 1.19.2 to 1.19.9.
Congure the sensor at the ‘SnSr’ menu. See secon 1.19.10.
Funcon
mode
Counter
Counter quadrature
Counter + inhibion
Counter + control add / substract
Counter dierenal
Ratemeter
Ratemeter quadrature
Periodmeter
Conguraon menu for mode ‘counter’ (‘cn.1’). Total impulses re-
ceived are mulplied by the value of the ‘mulplier’ (‘MuLt’) register
and divided by the ‘divider’ (‘dIV’) register. Result is refreshed on the
display.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• assign the value for ‘Preset’ (‘PrSt’) from -199999 to 999999. Reset
acvaon loads on display the preset value.
• select the counng mode (‘ModE’) to ‘uP’ for upwards counng
(impulses received add) or ‘doWn’ for downwards counng (impuls-
es received substract).
• to acvate the ‘FAST’ mode (‘FASt’) select ‘on’. See secon 1.16 for
more informaon on the ‘FAST’ mode.
1.19.2 Conguraon for ‘cn.1’
The next menu accesses the conguraon parameters for the ‘funcon mode’ (‘Func’)
selected. Conguraon parameters are slightly dierent for each ‘funcon mode’. In
the next entries, all 7 possible conguraon menus are explained, ‘cnF.1’ to ‘cnF.7’, one
for each ‘funcon mode’.
Mulplier
1 to 999999
Divider
1 to 999999
Conguraon
counter
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Mode
Up
Down
‘FAST’ mode
1.19 Conguraon menu
1.19.1 Inial set-up

11
DPF20 Frequency, rate, total or period counter Instruction Manual
1.19 Conguraon menu (cont.)
Conguraon menu for mode ‘counter quadrature’ (‘cnq.2’). To-
tal impulses received are mulplied by the value of the ‘mulplier’
(‘MuLt’) register and divided by the ‘divider’ (‘dIV’) register. Result is
refreshed on the display.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• assign the value for ‘Preset’ (‘PrSt’) from -199999 to 999999. Reset
acvaon loads on display the preset value.
• select the ‘edges’ to count for each quadrature cycle (‘q.124’). Se-
lect ‘1--1’ for 1 impulse per quadrature cycle. Select ‘1--2’ for 2 im-
pulses per quadrature cycle. Select ‘1--4’ for 4 impulses per quadra-
ture cycle.
1.19.3 Conguraon for ‘cnq.2’
Conguraon menu for mode ‘counter + inhibion control’ (‘cnI.3’).
Total impulses received are mulplied by the value of the ‘mulplier’
(‘MuLt’) register and divided by the ‘divider’ (‘dIV’) register. Result is
refreshed on the display.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• assign the value for ‘Preset’ (‘PrSt’) from -199999 to 999999. Reset
acvaon loads on display the preset value.
• select the counng mode (‘ModE’) to ‘uP’ for upwards counng
(impulses received add) or ‘doWn’ for downwards counng (impuls-
es received substract).
• select the acvaon mode for the ‘inhibion’ (‘Inh’) control. Select
‘on_h’ to inhibit the counng when channel B is at logical state ‘1’.
Select ‘on_0’ to inhibit the counng when channel B is at logical state
‘0’.
1.19.4 Conguraon for ‘cnI.3’
Conguraon menu for mode ‘counter + control add / substract’
(‘cnc.4’). Total impulses received are mulplied by the value of the
‘mulplier’ (‘MuLt’) register and divided by the ‘divider’ (‘dIV’) regis-
ter. Result is refreshed on the display.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• assign the value for ‘Preset’ (‘PrSt’) from -199999 to 999999. Reset
acvaon loads on display the preset value.
• select the acvaon mode for the ‘control add / substract’ (‘Add’).
Select ‘on_h’ acvates the addion of impulses received on chan-
nel A when channel B is at logical state ‘1’ (impulses on channel A
substract if channel B is at logical state ‘0’). Select ‘on_0’ acvates
the addion of impulses received on channel A when channel B is
at logical state ‘0’ (impulses on channel A substract if channel B is at
logical state ‘1’).
1.19.5 Conguraon for ‘cnc.4’
Mulplier
1 to 999999
Divider
1 to 999999
Conf. counter
+ inhibion
Mulplier
Divider
Preset
Valor del preset
-199999 to 999999
Mode
Up
Down
Inhibion
Inhibits if chan-
nel B is high
Inhibits if chan-
nel B is 0 Vdc
Conf. counter
quadrature
Mulplier
1 to 999999
Divider
1 to 999999
Mulplier
Divider
Preset
Valor del preset
-199999 to 999999
Edges
1 imp. per cycle
2 imp. per cycle
4 imp. per cycle
Mulplier
1 to 999999
Divider
1 to 999999
Conguraon
counter +
control
add / substract
Mulplier
Divider
Preset
Valor del preset
-199999 to 999999
Control A/S
Adds if channel
B is high
Adds if channel
B is 0 Vdc

12
DPF20 Frequency, rate, total or period counter Instruction Manual
Conguraon menu for mode ‘counter dierenal’ (‘cnd.5’). To-
tal impulses received are mulplied by the value of the ‘mulplier’
(‘MuLt’) register and divided by the ‘divider’ (‘dIV’) register. Result is
refreshed on the display.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• assign the value for ‘Preset’ (‘PrSt’) from -199999 to 999999. Reset
acvaon loads on display the preset value.
Impulses received on channel A add. Impulses received on channel
B substract.
1.19.6 Conguraon for ‘cnd.5’
Conguraon menu for mode ‘ratemeter’ (‘rt.6’). Frequency mea-
sured is mulplied by the value of the ‘mulplier’ (‘MuLt’) register
and divided by the ‘divider’ (‘dIV’) register. Result is refreshed on the
display. Measure is updated at the rate dened on the ‘GATE’ regis-
t e r.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• select the value for the ‘Time window’ (‘GAtE’). Available values
are : 0.5, 1.0, 2.0, 4.0, 8.0 or 16.0 seconds. The me window denes
the display refresh me. This parameter has no eect if the ‘SLOW’
mode is acve.
• for slow frequencies acvate the ‘SLoW’ parameter conguring the
‘tIME’ parameter between 1 and 1000 seconds. Congure the ‘nuMb’
parameter between 1 and 32 impulses. See secon 1.15 for more in-
formaon on the ‘SLoW’ mode.
• in case of unstable signals, acvate the ‘average lter’ (‘AVr’) func-
on. It acvates a recursive lter on the reading. the lter is stronger
for higher values, from 0.0 to 99.9.
1.19.7 Conguraon for ‘rt.6’
1.19 Conguraon menu (cont.)
Conguraon menu for mode ‘ratemeter quadrature’ (‘rtq.7’).
Frequency measured is mulplied by the value of the ‘mulplier’
(‘MuLt’) register and divided by the ‘divider’ (‘dIV’) register. Result is
refreshed on the display. Measure is updated at the rate dened on
the ‘GATE’ register.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• select the value for the ‘Time window’ (‘GAtE’). Available values
are : 0.5, 1.0, 2.0, 4.0, 8.0 or 16.0 seconds. The me window denes
the display refresh me. This parameter has no eect if the ‘SLOW’
mode is acve.
• select the ‘edges’ to count for each quadrature cycle (‘q.124’). Se-
lect ‘1--1’ for 1 impulse per quadrature cycle. Select ‘1--2’ for 2 im-
pulses per quadrature cycle. Select ‘1--4’ for 4 impulses per quadra-
ture cycle.
1.19.8 Conguraon for ‘rtq.7’
Mulplier
1 to 999999
Divider
1 to 999999
Conguraon
counter
dierenal
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Edges
1 imp. per cycle
2 imp. per cycle
4 imp. per cycle
Mulplier
1 to 999999
Divider
1 to 999999
Seconds
Conf. ratemeter
quadrature
Mulplier
Divider
Time window
Mulplier
1 to 999999
Divider
1 to 999999
Seconds
Conf. ratemeter Mulplier
Divider
Time window
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses

13
DPF20 Frequency, rate, total or period counter Instruction Manual
1.19 Conguraon menu (cont.)
Conguraon menu for mode ‘periodmeter’ (‘Prd.8’). Period mea-
sured is mulplied by the value of the ‘mulplier’ (‘MuLt’) register
and divided by the ‘divider’ (‘dIV’) register. Result is refreshed on the
display. Measure is updated at the rate dened on the ‘GATE’ regis-
t e r.
• assign the value for parameter ‘Mulplier’ (‘MuLt’) from 1 to
999999.
• assign the value for parameter ‘Divider’ (‘dIV’) from 1 to 999999.
• select the value for the ‘Time window’ (‘GAtE’). Available values
are : 0.5, 1.0, 2.0, 4.0, 8.0 or 16.0 seconds. The me window denes
the display refresh me. This parameter has no eect if the ‘SLOW’
mode is acve.
• for long periods acvate the ‘SLoW’ parameter conguring the
‘tIME’ parameter between 1 and 1000 seconds. Congure the ‘nuMb’
parameter between 1 and 32 impulses. See secon 1.15 for more in-
formaon on the ‘SLoW’ mode.
• in case of unstable signals, acvate the ‘average lter’ (‘AVr’) func-
on. It acvates a recursive lter on the reading. the lter is stronger
for higher values, from 0.0 to 99.9.
1.19.9 Conguraon for ‘Prd.8’
• for slow frequencies acvate the ‘SLoW’ parameter conguring the
‘tIME’ parameter between 1 and 1000 seconds. Congure the ‘nuMb’
parameter between 1 and 32 impulses. See secon 1.15 for more in-
formaon on the ‘SLoW’ mode.
• in case of unstable signals, acvate the ‘average lter’ (‘AVr’) func-
on. It acvates a recursive lter on the reading. the lter is stronger
for higher values, from 0.0 to 99.9.
1.19.10 Sensor conguraon
The sensor conguraon menu (‘SnSr’) provides conguraon for
the input secon of the instrument, the excitaon voltage and the
trigger level, for accurate detecon of the impulses.
• ‘Automac conguraon’ (‘Auto’) - if a standard sensor is used,
select one of the sensors provided at the ‘Auto’ menu list. The instru-
ment will automacally congure the parameters according to Table
2 (see secon 1.8). If this conguraon does not detect impulses,
manually modify the values for the parameters indicated below.
Mulplier
1 to 999999
Divider
1 to 999999
Conf.
Periodmeter
Mulplier
Divider
Time window
Seconds
Sensor
NPN 2 wire
Mechanical contact
Namur
Automac conf.
NPN 3 wire
PNP 2 wire
PNP 3 wire
Push pull
TTL
CMOS
Pick-up
Inducve
Vac <30 V
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses

14
DPF20 Frequency, rate, total or period counter Instruction Manual
• ‘Pulls on channel A’ (‘PuL.A’) - acvates pull resistors at chan-
nel A. Select ‘P.uP’ to acvate pull-up resistors (needed for NPN
sensors). Select ‘P.dn’ to acvate pull-down resistors (needed PNP
sensors). Pull-up and pull-down selecon congure the trigger level
to 2,5 Vdc.
• ‘Pulls on channel B’ (‘PuL.b’) - see previous menu entry ‘Pulls on
channel A’.
• ‘Pulls on reset’ (‘PuL.r’) - see previous menu entry ‘Pulls on channel
A’. Trigger level for reset channel is xed to 2,5 Vdc.
• ‘trigger level’ (‘trIG’) - input signal value in Vdc at which the in-
strument detects impulse. Selectable between 0,0 and 3,9 Vdc. Trig-
ger level is the same for channels A and B. Trigger level for reset
channel is xed at 2,5 Vdc. The two leds at the le of the trigger
level are part of the ‘Trigger Sense’ ulity for easy locaon of the
proper trigger level (see secon 1.13).
• ‘Acvaon for channel A’ (‘Act.A’) - congures the acvaon of
channel A by rising edge (‘on_h’) or by falling edge (‘on_0’)
• ‘Acvaon for reset channel’ (‘Act.r’) - congures the acva-
on of the reset channel by rising edge (‘on_h’) or by falling edge
(‘on_0’)
• ‘Excitaon voltage’ (‘V.EXc’) - congures the value of the excita-
on voltage at 5 Vdc, 9 Vdc, 15 Vdc and 18 Vdc. Select ‘no’ to disable
the excitaon voltage.
• ‘Anrrebound lter’ (‘rbnd’) - the anrrebound lter blocks ad-
dional rebounds (typically from a mechanical contact sensor) from
the same single impulse, prevenng that a single impulse counts
for more than 1. Value between 0 mSeconds and 1000 mSeconds.
When an impulse is received, impulse detecon is disabled for the
duraon of the me congured in this parameter. Aer me has
passed, impulse detecon is enabled again. Recommended value
for a mechanical contact : 100 mSeconds.
1.19 Conguraon menu (cont.)
Anrrebound
by rising edge
by falling edge
Acvaon for
channel A
by rising edge
by falling edge
Acvaon for
reset
Excitaon voltage
Trigger level
Trigger level (from
0.0 Vdc a 3.9 Vdc).
See secon 1.15
for ‘Trigger Sense’
ulity
Anrrebound lter
(0 to 1000 mSec.)
Pull-down
No pull resistor
Pull-up
Pulls on reset
Pulls on channel B
Pull-down
No pull resistor
Pull-up
Pull-down
No pull resistor
Pull-up
Pulls on channel A

15
DPF20 Frequency, rate, total or period counter Instruction Manual
1.19 Conguraon menu (cont.)
The ‘Alarms’ (‘ALr’) menu congures the independent acvaon of
up to 3 relay outputs (or transistor or SSR drive control), installed
with the R1 oponal modules (or T1 or SSR) (see secon 2.1). For
outputs up to 4 and 6 relays, see special modules R2, R4 and R6 at
secon 2.6. The alarm states are indicated in the front display with
leds marked as ‘1’, ‘2’ and ‘3’.
To congure an alarm, enter into the alarm menu (‘ALr1’, ‘ ALr2’ or
‘ALr3’) and congure the following parameters :
• select ‘Acve’ (‘Act’) to ‘on’
• at ‘Alarm type’ (‘TypE’) select the alarm to act as a maximum type
alarm (‘MAX’) or a minimum type alarm (‘MIn’). The maximum type
alarm (or minimum type alarm) acvates when the display value is
higher (or lower) than the setpoint value.
• at ‘Setpoint’ (‘SEt’) enter the value for the alarm acvaon point.
This parameter is eligible for conguraon through the ‘Fast access’
menu (see secon 1.19.12).
• congure the hysteresis value at ‘Hysteresis’ (‘hySt’). The hyster-
esis applies to the deacvaon process of the alarm. The alarm de-
acvates when the reading has passed the setpoint value plus the
hysteresis value. Hysteresis helps to avoid repeve switching of the
alarm relays, due to uctuang input signals around the setpoint.
• at ‘Acvaon delay’ (‘dEL.0’) congure the delay to apply before
alarm acvaon. The acvaon delay starts counng when the set-
point value is passed. Value from 0.0 to 99.9 seconds.
• at ‘Deacvaon delay’ (‘dEL.1’) congure the delay to apply
before alarm deacvaon. The deacvaon delay starts counng
when the setpoint value plus the hysteresis value, is passed. Value
from 0.0 to 99.9 seconds.
• to work with ‘windowed alarms’ (see graphical example below)
acvate ‘Setpoint 2’ (‘SEt2’) to ‘on’ and then congure the desired
second setpoint value. Second setpoint must always be higher in
value than the rst setpoint.
• the ‘Relay inverted’ (‘r.Inv’) parameter inverts the normal relay
connecons. When set to ‘on’ the relay will be acve when alarm is
inacve. For security applicaons where an inacve relay controls
the shutdown of the system.
• the ‘Locked alarm’ (‘A.Lck’) parameter disables the automac
deacvaon of the alarm. Alarm deacvaon must be performed
manually, by pressing the ‘LE’ front buon (see secon 1.19.14)
• the ‘On alarm’ (‘on.AL’) parameter assigns a predened behav-
iour when alarm is acvated. Select ‘cont’ to connue counng.
Select ‘to_0’ to load ‘0’ on displays. Select ‘to_p’ to load preset
value on display. Parameter ‘dEL.1’ is set to 1 second when ‘to_0’
or ‘to_p’ are selected.
1.19.11 Alarms
On alarm
Connue
To zero
To preset
Alarm 1
Setpoint
Hysteresis
Setpoint 2
Acve
Alarm type
Alarms
Acvaon delay
Deacvaon delay
Relay inverted
Locked alarm
Reading
Time
setpoint
hysteresis
Alarm as maximum,
no hysteresis, no delays
on
o Time
acvaon
delay
on
o
deacvaon
delay
Time
Alarm as maximum,
with hysteresis and delays
on
o Time
Alarm as minimum,
no hysteresis, no delays
Reading
Time
Setpoint 2
Setpoint 1
Alarm as minimum,
with double setpoint,
no hysteresis, no delays
on
o Time

16
DPF20 Frequency, rate, total or period counter Instruction Manual
1.19 Conguraon menu (cont.)
The ‘On Power Up’ (‘on.Pu’) menu congures funcons to apply at start-up. It
applies only to instrument restart aer power loss. It does not apply to instru-
ment restart due to change in conguraon.
• parameter ‘Delay’ (‘dLAy’) assigns a waing me in seconds. The instrument
waits the congured me before starng normal funcon. During this waing
me, the display shows all decimal points on in ash mode, all alarms are in
‘oFF’ state, there is no signal acquision and there is no communicaons or
control being performed. Aer the congured me is over, the instrument
starts in normal funcon. Delay value between 0 and 200 seconds.
• the ‘Reset’ (‘rSt’) parameter will execute a reset of the counter each me the
instrument is restarted.
1.19.15 Menu ‘On Power Up’
Tools
Key UP
(‘fast access’)
Memory of
maximum
Memory of
minimum
Setpoint 1
Setpoint 2
Setpoint 3
Memory of
cycles
Preset value
On power-up Delay Seconds
Reset
The ‘UP’ (5) key at the front of the instrument gives access to a list of func-
ons congurable by the operator. See secon 1.17 for an explanaon on how
to operate the ‘fast access’ menu.
The ‘Key UP (Fast access)’ (‘K.uP’) menu allows to select which funcons will
be accessible through the ‘fast access’ menu. Select ‘on’ to acvate each func-
on.
• the ‘Setpoint 1’ (‘ALr1’) funcon allows to visualize and modify the alarm 1
setpoint through the ‘fast access’ menu.
• the ‘Setpoint 2’ (‘ALr2’) funcon allows to visualize and modify the alarm 2
setpoint through the ‘fast access’ menu.
• the ‘Setpoint 3’ (‘ALr3’) funcon allows to visualize and modify the alarm 3
setpoint through the ‘fast access’ menu.
• the ‘Memory of maximum’ (‘MAX’) or ‘Memory of minimum’ (‘MIn’) func-
ons allow to visualize the maximum or minimum reading value stored in
memory. To reset this value, visualize the memory value at the ‘fast access’
menu with key UP (5) and when message ‘rSt’ is displayed, press (<) to re-
set.
• the ‘Memory of cycles’ (‘cYcL’) funcon allow to visualize and reset the
memory of cycles. To reset this value, visualize the memory value at the ‘fast
access’ menu with key UP (5) and when message ‘rSt’ is displayed, press (<)
to reset. The memory of cycles countes ‘+1’ each me a reset alarm occurs
(‘on_AL’ / ‘to_0’ or ‘to_P’) or a reset by ‘overrange’ / ‘underrange’ occurs.
• the ‘Preset value’ (‘PrSt’) funcon allows to visualize and modify the preset
value congured.
1.19.12 Fast access
If only a single funcon is selected for the ‘fast access’ menu, press-
ing the the ‘UP’ (5) key will shortly display the funcon name and
then automacally jump to the funcon value.
1.19.13 Super fast access
The ‘LE’ (3) key at the front of the instrument can be congured to
acvate a funcon.
• the ‘No funcon’ (‘nonE’) value assigns no funcon.
• the ‘Front reset’ (‘F.rSt’) value asigns the reset funon.
• the ‘Alarm unlock’ (‘A.Lck’) value assigns the manual unlock of the
alarms funcon, for instruments with the ‘Locked alarms’ (‘A.Lck’)
funcon acvated (see secon 1.19.11)
• the ‘Reset and alarm unlock’ (‘Fr.AL’) assigns the two previous
funcons to the same buon.
1.19.14 Menu ‘Key LE’
Key LE
Front reset
Alarm unlock
No funcon
Reset and alarm unlock

17
DPF20 Frequency, rate, total or period counter Instruction Manual
At the ‘Password’ (‘PASS’) menu select a 6 digit code to block access
to the ‘conguraon menu’. Instrument conguraon will not be ac-
cessible to non authorized personnel. To acvate the ‘Password’ se-
lect ‘on’ and introduce the code.
The code will be requested when trying to access the ‘conguraon
menu’ (key ‘SQ’ (<)). The ‘fast access’ menu is not password pro-
tected.
The ‘Version’ (‘VEr’) menu informs of the current rmware version
installed in the module.
1.19.16 Menus ‘Overrange / underrange’
At the ‘Brightness’ (‘LIGh’) menu select the light intensity for the
front leds. With this funcon it is possible to adapt the instrument to
the environment light intensity.
1.19.18 Vexc. control
Menus ‘OPt.1’, ‘OPt.2’ and ‘OPt.3’ give access to the ‘conguraon
menus’ of the output and control modules installed at slots Opt.1,
Opt.2 and Opt.3.
See secon 2 for a list of output and control modules available for
each slot. The ‘conguraon menu’ of each module is described at
the User’s Manual of each module.
1.19.19 Funcon ‘Password’
At the ‘Factory reset’ (‘FAct’) menu, select ‘yes’ to load the default
factory conguraon for the instrument (see secon 1.21).
1.19.20 Factory reset
1.19.21 Firmware version
The ‘Counter overrange’ (‘c.orG’) and ‘Counter underrange’ (‘c.urG’)
parameters congure the behavior of the instrument when reading
is higher than ‘9999’ (overrange) or lower than ‘-1999’ (underrange).
Select ‘FLSH’ to enter reading into ash mode. Select ‘to_0’ to apply
a reset to ‘0’. Select ‘to_P’ to apply a reset to preset value.
1.19.22 Brightness
1.19.17 Le zeros
The ‘Le zeros’ (‘L.ZEr’) parameter controls the le zeros on or o.
1.19 Conguraon menu (cont.)
Password
Version
Factory reset
Minimum
Brightness
Maximum
Standard
Opon 1
Conguraon menu for the module installed at Opt.1
Opon 2
Conguraon menu for the module installed at Opt.2
Opon 3
Conguraon menu for the module installed at Opt.3
Counter
overrange
Flash
To zero
To preset
Counter
underrange
Flash
To zero
To preset
Le zeros
With le zeros
Without le zeros
Vexc. control
with Vexc. error control
without Vexc. error control
1.19.23 Access to oponal modules
The ‘Vexc control’ (‘V.ctr’) parameters enables the ‘Err.8’ message,
when consumpon requested to the excitaon voltage is higher than
the current the instrument can provide.

18
DPF20 Frequency, rate, total or period counter Instruction Manual
Select with key LE
Decimal point
Press ‘SQ’ (<) for 1 second to access the ‘Conguraon menu’. See
secon 1.19 for a descripon of each menu entry.
Funcon
mode
Mulplier
1 to 999999
Divider
1 to 999999
Conguraon
counter
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Mode
Up
Down
‘FAST’ mode
Conf. counter
quadrature
Mulplier
1 to 999999
Divider
1 to 999999
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Edges
1 imp. per cycle
2 imp. per cycle
4 imp. per cycle
Mulplier
1 to 999999
Divider
1 to 999999
Conf. counter
+ inhibion
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Mode
Up
Down
Inhibion
Inhibits if chan-
nel B is high
Inhibits if chan-
nel B is 0 Vdc
Mulplier
1 to 999999
Divider
1 to 999999
Conguraon
counter +
control
add / substract
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Control A/S
Adds if channel
B is high
Adds if channel
B is 0 Vdc
Mulplier
1 to 999999
Divider
1 to 999999
Conguraon
counter
dierenal
Mulplier
Divider
Preset
Preset value
-1999 to 999999
Mulplier
1 to 999999
Divider
1 to 999999
Seconds
Conf. ratemeter Mulplier
Divider
Time window
1.20 Full conguraon menu
Counter
Counter quadrature
Counter + inhibion
Counter + control add / substract
Counter dierenal
Ratemeter
Ratemeter quadrature
Periodmeter

19
DPF20 Frequency, rate, total or period counter Instruction Manual
Mulplier
1 to 999999
Divider
1 to 999999
Seconds
Conf. ratemeter
quadrature
Mulplier
Divider
Time window
Mulplier
1 to 999999
Divider
1 to 999999
Conf. ratemeter Mulplier
Divider
Time window
Seconds
Edges
1 imp. per cycle
2 imp. per cycle
4 imp. per cycle
1.20 Full conguraon menu (cont.)
Sensor Automac conf.
Trigger level
Trigger level (from
0.0 Vdc a 3.9 Vdc).
See secon 1.15
for ‘Trigger Sense’
ulity
Pull-down
No pull resistor
Pull-up
Pulls on reset
Pulls on channel B
Pull-down
No pull resistor
Pull-up
Pull-down
No pull resistor
Pull-up
Pulls on channel A
NPN 2 wire
Mechanical contact
Namur
NPN 3 wire
PNP 2 wire
PNP 3 wire
Push pull
TTL
CMOS
Pick-up
Inducve
Vac <30 V
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses

20
DPF20 Frequency, rate, total or period counter Instruction Manual
On alarm
Connue
To zero
To preset
Alarm 1
Setpoint
Hysteresis
Setpoint 2
Acve
Alarm type
Alarms
Acvaon delay
Deacvaon delay
Relay inverted
Locked alarm
Tools
Key UP
(‘fast access’)
Memory of
maximum
Memory of
minimum
Setpoint 1
Setpoint 2
Setpoint 3
Memory of
cycles
Preset value
On power-up Delay Seconds
Reset
Key LE
Front reset
Alarm unlock
No funcon
Counter
overrange
Flash
To zero
To preset
Counter
underrange
Flash
To zero
To preset
1.20 Full conguraon menu (cont.)
Reset and alarm unlock
by rising edge
by falling edge
Acvaon for
reset
Excitaon voltage
Anrrebound
Anrrebound lter
(0 to 1000 mSec.)
rising edge
falling edge
Channel A ac-
vaon