KEPCO 52U User manual

WARNING: Read page 2 first
990146 09/08/20
Electronic display
voltage-powered dual
function counter with
4 functions
Model 52U

2
1.1 Safety instructions and warnings
Only use this display
– in a way according to its intended
purpose
– if its technical condition is perfect
– adhering to the operating
instructions and the general
safety instructions.
1.2 General safety instructions
1. Before carrying out any installation or mainte-
nance work, make sure that the power supply
of the digital display is switched off.
2. Only use this digital display in a way according
to its intended purpose:
f its technical condition is perfect.
Adhering to the operating instructions and the
general safety instructions.
3. Adhere to country or user specific regulations.
4. The digital display is not intended for use in
areas with risks of explosion and in the
branches excluded by the standard EN 61010
Part 1.
5. The digital display shall only operated if it has
been correctly mounted in a panel, in accor-
dance with the chapter “Main technical fea-
tures”.
1.4 Description
The 52U is a multipurpose device.
Depending on the programmed basic function,
the device operates like
•an electronic totalizer and frequency meter
(see page 3)
• an electronic display counter with 2
totalizing ranges (see page 5)
• an electronic totalizer and time meter
(see page 7)
• an electronic time meter with 2 time ranges
(see page 10)
2. Setting of the operating parameters
a. Press both front side keys keys and switch on
the supply voltage or, if the supply voltage is
already on, press both keys simultaneously
during 5 s.
b. The display shows
c. After releasing the keys, the display shows
c1.Hold the left key pressed and press the right
key to leave the programming operation.
c2.Press the right key to switch to
.
d. Hold the left key pressed and press the right
key to switch to the first parameter.
1.3 Use according to the intended
purpose
The digital display may be used only as a panel-
mounted device. Applications of this product may
be found in industrial processes and controls, in
manufacturing lines for the metal, wood, plastics,
paper, glass, textile and other processing indus-
tries.
Over-voltages at the terminals of the digital dis-
play must be kept within the limits in Category II
If the digital display is used to monitor machines
or processes in which, in case of a failure of the
device or an error made by the operator, there
might be risks of damaging the machine or caus-
ing accidents to the operators, it is your responsi-
bility to take appropriate safety measures.
!

3
3. Programming routine
The first menu item is the selection of the basic
operating mode, which determines the functions
of the device.
Operating mode adding
counter and frequency
meter, continued in point 4
on page 3
Operating mode display
counter with 2 totalizing
ranges, continued in point
4 on page 5
Operating mode totalizer
and time meter, continued
in point 4 on page 7
Operating mode time
meter with 2 time ranges,
continued in point 4 on
page 10
e. After releasing the keys, the display alter-
nates between the menu title and the current
menu item setting. After pressing any key,
only the menu item setting is displayed.
f. Pressing the right key, the menu item setting
will be switched to the next value.
If figures are to be input (e.g. when setting
the scaling factor), select first the decade
using the left key, and then set the value
using the right key.
g. Hold the left key pressed and press the right
key to switch to the next menu item.
h. The last menu title ”EndPro” allows, when
selecting “Yes”, to exit the programming
menu and to take over (store) the new val-
ues.
If “no” is selected, the programming routine
is repeated, the latest values set remaining
active. They can now be checked again or
modified.
Electronic totalizer and frequency
meter
52U: basic operating mode
1. Description
• 6-digit totalizer and frequency meter
• Red LED display, character height 8 mm
• Display range 0 ... 999 999
• Leading zeros suppression
• Programming via two setting keys on the front
side
• During programming, the display guides the
user with text prompts
• Value conversion and display in 1/s oder 1/min
2. Inputs
INP A
Dynamic count/frequency input.
RESET
Dynamic RESET input. Linked in parallel to the
red RESET key. Resets the counter to zero.
3. Selection of the displayed value
Pressing the right key allows switching between
the totalizer display and the frequency meter dis-
play. Press the key briefly to display for 2 sec-
onds the current function (“total” or “tacho”). If,
during this period of time, the right key is pressed
a second time, the device switches to the next
function and displays a confirmation (“total” or
“tacho”) for 2 seconds. Then, the value of the
selected function is displayed.
4. Programming routine
The programmable parameters of the device are
described below, in the order in which they can
be set. The device is fully programmed after one
pass of the routine.
The first values stated correspond to the factory
setting
- Subject to change without prior notice -

4
4.1 Polarity of the inputs
npn: switching for 0 V
pnp: switching for +UB
4.2 Switching on the 30 Hz filter (INP A)
30 Hz filter off (fmax)
It can be set from 00.0001
up to 99.9999.
The decimal point is set to
4 decimal places.
“0” is not accepted!
30 Hzfilter on
4.3 Multiplying factor (totalizer)
- Subject to change without prior notice -

5
4.12 End of programming
The programming routine
is repeated once more.
The values set until now
can be checked and mod-
ified.
The programming routine
wil be left and all values
set will be stored as new
parameters.
Afterwards the device is
ready for operation.
4.10 Display mode (frequency meter)
Value conversion and
display in 1/s
Value conversion and
display in 1/min
4.11 Max. time to wait until “0” is displayed
(frequency meter)
This parameter indicates, how long it takes, when
measuring is active, until „0“ is displayed.
Max. time to wait 00.1 s
(min. value)
Max. time to wait 99.9 s
Electronic display counter
with 2 totalizing ranges
52U: basic operating mode
1. Description
• 6-digit dislay counter with Reset function
• Red LED display, character height 8 mm
• Display range 0 ... 999 999
• Leading zeros suppression
• Programming via two setting keys on the front
side
• During programming, the display guides the
user with text prompts
2. Inputs
INP A
Dynamic count input Counter 1 and Counter 2.
RESET
Dynamic RESET input. Linked in parallel to the
red RESET key. Sets the counter to zero. Can be
adjusted individually for Counter 1 and Counter 2.
3. Selection of the displayed value
Pressing the right key allows switching between
the display of totalizer 1 and the display of
totalizer 2. Press the key briefly to display for 2
sec-onds the current function (“total1” or “total2”).
If, during this period of time, the right key is
pressed a second time, the device switches to the
next function and displays a confirmation (“total1”
or “total2”) for 2 seconds. Then, the value of the
selected function is displayed.
4. Programming routine
The programmable parameters of the device are
described below, in the order in which they can
be set. The device is fully programmed after one
pass of the routine.
The first values stated correspond to the factory
settings

6
4.1 Polarity of the inputs
npn: switching for 0 V
pnp: switching for +UB
4.2 Switching on the 30 Hz filter (INP A)
30 Hz filter off (fmax)
30 Hzfilter on
It can be set from 00.0001
up to 99.9999.
The decimal point is set to
4 decimal places.
“0” is not accepted!
4.3 Multiplying factor
It can be set from 00.0001
up to 99.9999.
The decimal point is set to
4 decimal places.
"0" is not accepted!
4.4 Dividing factor
The decimal point defines
the way of displaying the
count values. It does not
affect counting.
0 no decimal place
0.0 one decimal place
0.00 two decimal places
0.000
three decimal places
4.5 Decimal point
4.6 RESET mode (totalizer 1)
manual reset via the red
RESET key and
electrical reset via the
RESET input
no reset (red RESET key
and RESET input locked)
only electrical reset via the
RESET input
only manual reset via the
red RESET key
4.7 RESET Mode (totalizer 2)
manual reset via the red
RESET key and
electrical reset via the
RESET input
no reset (red RESET key
and RESET input locked)
only electrical reset via the
RESET input
only manual reset via the
red RESET key
* where bounce occurs, e.g. with contacts
The filter provides input
damping*

7
4.8 End of programming
The programming routine
is repeated once more.
The values set until now
can be checked and mod-
ified.
The programming routine
wil be left and all values
set will be stored as new
parameters.
Afterwards the device is
ready for operation.
Electronic totalizer and time meter
52U: basic operating mode
1. Description
• 6 digit totalizer and time meter with Reset
function
• Red LED display, character height 8 mm
• Display range 0 ... 999 999
• Leading zeros suppression
• Programming via two setting keys on the front
side
• During programming, the display guides the
user with text prompts
• Operation indicator: the decimal point of the
lowest digit blinks while the count is active.
• Time meter operating modes:
– Counting while INP B is inactive “GAtE.Lo”
– Counting while INP B is active “GAtE.hi”
– Count Start/Stop with INP B edge B “Inb.Inb”
• Counting ranges: h; min; s; h.min.s
2. Inputs
INP A
Dynamic count input for the totalizer.
INP B
Start-/Stop or gate input for time meter
(independent of the input mode)
RESET
Dynamic RESET input. Linked in parallel to the
red RESET key. Sets the counter to zero. Can be
adjusted individually for the totalizer and the time
meter.
3. Selection of the displayed value
Pressing the right key allows switching between
the totalizer display and the time meter display .
Press the key briefly to display for 2 seconds the
current function (“total” or “time”). If, during this
period of time, the right key is pressed a second
time, the device switches to the next function and
displays a confirmation (“total” or “time”) for 2
seconds. Then, the value of the selected function
is displayed.

8
4. Programming routine
The programmable parameters of the device are
described below, in the order in which they can
be set. The device is fully programmed after one
pass of the routine.
The first values stated correspond to the factory
settinfs
4.1 Polarity of the inputs
npn: switching for 0 V
pnp: switching for +UB
4.2 Switching on the 30 Hz filter (INP A, INP B)
30 Hz filter off (fmax)
Count and start/stop
inputs not damped
30 Hz filter on
It can be set from 00.0001
up to 99.9999.
The decimal point is set to
4 decimal places.
"0" is not accepted!
Count and start/stop
inputs damped
4.3 Multiplying factor (totalizer)
It can be set from 00.0001
up to 99.9999.
The decimal point is set to
4 decimal places.
"0" is not accepted!
4.4 Dividing factor (totalizer)
The decimal point defines
the way of displaying the
count values. It does not
affect counting.
0 no decimal place
0.0 one decimal place
0.00 two decimal places
0.000
three decimal places
4.5 Decimal point (totalizer)
4.6 RESET mode (totalizer)
manual reset via the red
RESET key and electrical
reset via the RESET input
no reset (red RESET key
and RESET input locked)
only electrical reset via the
RESET input
only manual reset via the
red RESET key
Start/Stop via Inp B.
Counting while Inp B
(Gate) not active or open
Start/Stop via Inp B.
Counting while Inp B (Gate)
active (High level with
pnp; Low level with npn)
Count
Start/Stop via INP B
(LOW-HIGH edge with
pnp; HIGH-LOW edge
with npn). Every active
edge changes the counter
status.
4.7 Input mode (time meter)
* where bounce occurs, e.g. with contacts
The filter provides input
damping*

9
Time unit: seconds (accu-
racy depending on posi-
tion of the decimal point*)
Time unit: minutes (accu-
racy depending on posi-
tion of the decimal point*)
Time unit: hours (accura-
cy depending on position
of the decimal point*)
Time units:
Hours:Minutes:Seconds
(decimal point setting is
ignored)
4.8 Operating mode (time meter)
*0, 0.1, 0.01, 0.001 means: time measurement in
0, 0.1, 0.01, 0.001 time units
4.9 Decimal point (time meter)
The decimal point defines
the resolution of the pro-
grammed time unit.
0 1
0.0 1/10 (0,1)
0.00 1/100 (0,01)
0.000 1/1000 (0,001)
4.11 End of programming
The programming routine
is repeated once more.
The values set until now
can be checked and mod-
ified.
The programming routine
wil be left and all values
set will be stored as new
parameters.
Afterwards the device is
ready for operation.
4.10 RESET mode (time meter)
manual reset via the red
RESET key and electrical
reset via the RESET input
no reset (red RESET key
and RESET input locked)
only electrical reset via the
RESET input
only manual reset via the
red RESET key

10
Electronic time meter with
2 time ranges
52U: basic operating mode
1. Description
• 6 digit time meter with Reset function
• Red LED display, character height 8 mm
• Display range 0 ... 999 999
• Leading zeros suppression
• Programming via two setting keys on the front
side
• During programming, the display guides the
user with text prompts
• Operation indicator: the decimal point of the
lowest digit blinks while the count is active
• Time meter operating modes:
– Counting while INP B is inactive “GAtE.Lo”
– Counting while INP B is active “GAtE.hi”
– Count Start/Stop with INP B edge (Inb.Inb)
– Count Start with INP A edge, count Stop with
INP B edge (InA.InB)
2. Inputs
INP A
Start input (depending on the input mode chosen)
INP B
Time meter Start/Stop or gate input (depending
on the input mode chosen)
RESET
Dynamic RESET input. Linked in parallel to the
red RESET key. Resets the counter to zero. Can
be adjusted individually for Counter 1 and
Counter 2.
3. Selection of the displayed value
Pressing the right key allows switching between
the display of time meter 1 and the display of
time meter 2. Press the key briefly to display for 2
seconds the current function (“time1” or “time2”).
If, during this period of time, the right key is
pressed a second time, the device switches to
the next function and displays a confirmation
(“time1” or “time2”) for 2 seconds. Then, the
value of the selected function is displayed.
4. Programming routine
The programmable parameters of the device are
described below, in the order in which they can
be set. The device is fully programmed after one
pass of the routine.
The first values stated correspond to the factory
settings
4.1 Polarity of the inputs
npn: switching for 0 V
pnp: switching for +UB
4.2 Switching on the 30 Hz filter (INP A, INP B)
30 Hz filter off (fmax)
Start/Stop inputs not
damped
30 Hz filter on
Start/Stop inputs damped
for use with mechanical
switches
* where bounce occurs, e.g. with contacts
The filter provides input
damping*

11
Time unit: seconds (accu-
racy depending on posi-
tion of the decimal point*)
Time unit: minutes (accu-
racy depending on posi-
tion of the decimal point*)
Time unit: hours (accura-
cy depending on position
of the decimal point*)
Time units:
Hours:Minutes:Seconds
(decimal point setting is
ignored)
4.4 Operating mode
*0, 0.1, 0.01, 0.001 means: time measurement in
0, 0.1, 0.01, 0.001 time units
4.5 Decimal point
The decimal point defines
the resolution of the pro-
grammed time unit.
0 1
0.0 1/10 (0,1)
0.00 1/100 (0,01)
0.000 1/1000 (0,001)
4.7 RESET mode (time meter 2)
manual reset via the red
RESET key and electrical
reset via the RESET input
no reset (red RESET key
and RESET input locked)
only electrical reset via the
RESET input
only manual reset via the
red RESET key
only electrical reset via the
RESET input
only manual reset via the
red RESET key
4.6 RESET mode (time meter 1)
manual reset via the red
RESET key and electrical
reset via the RESET input
no reset (red RESET key
and RESET input locked)
Start/Stop via Inp B.
Counting while Inp B
(Gate) not active or open
Start/Stop via Inp B.
Counting while Inp B (Gate)
active (High level with
pnp; Low level with npn)
Count
Start/Stop via INP B
(LOW-HIGH edge with
pnp; HIGH-LOW edge
with npn). Every active
edge changes the counter
status.
Count start via INP A,
stop via INP B. (LOW-
HIGH edge with pnp;
HIGH-LOW edge with
npn)
4.3 Input mode (time meter)

12
4.8 End of programming
The programming routine
is repeated once more.
The values set until now
can be checked and mod-
ified.
The programming routine
wil be left and all values
set will be stored as new
parameters.
Afterwards the device is
ready for operation.
5. Technical data
Supply voltage
Power supply: 10 ... 30 V DC/max. 40 mA
with inverse-polarity protection
Display: 6 digits, red 7 segment
LED display, height 8 mm
Data retention: EEPROM
Polarity of the inputs:
Programmable, npn or pnp
for all inputs
Input resistance: appr. 5 kΩ
Count frequency:
DC power supply: 24 V 12 V 10 ...30 V
Input level: Standard 5V
typ. low level: 2,5 V 2,0 V 1,0 V
typ. ligh level: 22,0 V 10 V 4,0 V
Fmax:* kHz kH kHz
tot.tac 35 20 8
tot.tot 60 20 8
tot.ti1) 40 20 8
tot.ti2) 15 10 8
1) Start Gate.Lo Inp B not activ
2) Start InpB.InpB and Inp B connected
with Inp A
* at maximum frequency square wave pulses 1:1
Frequency measurement:
Accuracy : < 0.1 %
Measuring principle:
<38 Hz: period measurement
> 38 Hz: gating time measurement
gating time = 26,3 ms
Time count ranges:
Seconds 0,001 s ... 999 999 s
Minutes 0,001min ... 999 999 min
Hours 0,001 h ... 999 999 h
h.min.s 00 h 00 min 01 s
... 99 h 59 min 59 s
Accuracy <50 ppm
Minimum pulse length for the Reset input:
5 ms
Input sensitivity:
Standard sensitivity:
Low: 0 ... 0,2 x UB [V DC]
High: 0,6 x UB... 30 [V DC]
5 V sensitivity: Low: 0 ... 2 V DC
High: 4 ...30 V DC
Pulse shape: any,
Schmitt-Trigger inputs
Ambient temperature:
–20 ...+65 °C
Storage temperature:
–25 ... +70 °C
EMC:
In compliance with the EC Directive
2004/108/EEC
Noise emission EN 61 000-6-3/
EN 55 011 Class B
Noise immunity EN 61 000-6-2
Housing:
For front panel mounting: 48 x 24 mm
acc. to DIN 43700, RAL7021, dark grey
Weight: appr. 50 g
Protection: IP 65 (front)
Cleaning:
The front of the units is to be cleaned only with a
soft wet (water!) cloth.

13
7. Delivery includes:
1 Digital display
1Panel mounting clip
1 Bezel for screw mounting, panel cut out
50 x 25 mm
1 Bezel for clip mounting, panel cut out
50 x 25 mm
1 Seal
1 Operating instructions
6. Terminal assignment
8. Dimensions:
1 10 ... 30 V DC
2 0 V GND
3 INP A
4 INP B
5 Reset
Panel cut out:
22,2+0,3 x 45+0,6 mm
Counter sinking Af3, DIN 74
1
12345
Front Bezel Panel cut out:

KESSLER-ELLIS PRODUCTS
10 Industrial Way East
Eatontown, NJ 07724
800-631-2165 • 732-649-7100
Fax: [phone]
KEP.com