Kübler 901 User manual

english
Page 1 | ENG
Operating instructions
Electronic preset counter
Type 901
1.1 Foreword
Please read this instruction manual
entirely and carefully before installa-
tion and start-up. Please observe all
warnings and advices, both for your
own safety and for operating safety.
The intended protection can be
impaired If the device is not used
in accordance with this instruction
manual.
1.2 Safety instructions and warnings
Please use the device only if its
technical condition is perfect. It
should be used only for its intended
purpose, in accordance with this
instruction manual.
Defective or damaged devices
should be disconnected from the
mains immediately and taken out of
operation.
Repair work may be performed
only by the manufacturer‘s repairs
service.
This device may be opened only
for battery replacement. For this
purpose, the device must be sepa-
rated from all electric circuits and
de-energized.
Only connect the device to the
electricity networks provided to that
purpose.
The safety of the system in which
the device is integrated is the
responsibility of the installer.
Disconnect all electricity networks
prior to any installation or mainte-
nance work.
Use exclusively cables approved in
your country and designed for your
temperature and power ranges.
Installation and service work shall be
carried out exclusively by qualified
personnel.
The device must compulsorily be
protected with approved external
fuses. The value of these fuses
can be found in the technical
information.
This symbol is used on the device
to remind of the existence of dan-
gers, which are referred to in this
manual.
1.3 Use according to the intended purpose
The preset counter 901 counts pulses and
times up to max. 30 Hz and offers various
operating modes. The present counter simulta-
neously processes a programmed preset value.
Any other use is considered as non compliant
with the intended use.
The application area for this device lies in
industrial processes and controls, in the fields
of manufacturing lines for metal, wood, plastics,
paper, glass, textile and other like industries.
Overvoltages at the terminals of the device
must be kept within the limits of Overvoltage
Category II. The device must only be operated
when properly mounted in a panel and in accor-
dance with the section “Technical Data”.
The device is not suitable for use in areas with
explosion protection and for areas excluded in
EN 61010-1. If the device is used to monitor
machines or processes in which, in the event of
a failure of the device or an error made by the
operator, there might be the risk of damaging
the machine or causing an accident to the
operators, it is your responsibility to take the
appropriate safety measures.
The device has been designed for indoor ope-
ration. It may nevertheless be used outdoors,
provided the technical data is complied with.
In this case, take care to provide suitable UV
protection.
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1.4 Mounting in a control panel
Mount the device away from heat
sources and avoid direct contact
with corrosive liquids, hot steam or
the like.
Provide a free space of 10 mm all
around the device for its ventilation.
The device should be mounted so
that the terminals are out of the
reach of the operator and cannot be
touched by him. When mounting the
device, consider the fact that only
the front side is classified as acces-
sible for the operator.
1.5 Mounting instructions
1. Remove the mounting clip from the device.
2. Insert the device from the front into the panel
cut-out, ensuring the front-panel gasket is
correctly seated.
3. Slide the fixing clip from the rear onto the
housing, until the spring clamps are under
tension and the upper and lower latching lugs
have snapped into place.
Note: In case of proper installation, IP65 can be
reached on the front side.
1.6 Electrical installation
This device is powered by an internal battery.
The device must be disconnected
from any power supply prior to any
installation or maintenance work.
Make sure that no more voltages
LIABLE TO CAUSE AN ELECTRO-
CUTION are present.
Installation or maintenance work
may only be carried out by qualified
personnel and in compliance with
the applicable national and internati-
onal standards.
Take care to separate all extra-low
voltages entering or exiting the
device from hazardous electrical
conductors by means of a double or
reinforced insulation (SELV circuits).
The device must be protected exter-
nally for proper operation. Informa-
tion about the prescribed fuses can
be found in the technical data.
The relay output is not protected /
overcurrent-limited internally in the
device. Without suitable protection
of the relay output, undesired heat
development or even fire may
occur. The relay output must be
protected externally by the manuf-
acturer of the plant. It must also be
made sure that, even in case of a
malfunction, the values stated in the
technical data are under no circum-
stances exceeded.
During installation, make sure that the voltage
of the counting and reset inputs and the wiring
of the output contacts are both powered by the
same mains phase, in order not to exceed the
maximum permitted voltage of 250V.
The cables and their insulation must be desi-
gned for the planned temperature and voltage
ranges. Regarding the type of the cables,
adhere to the applicable country and final device
standards. The cross sections allowed for the
screw terminals can be found in the technical
data.
Before starting the device, check the cables
for proper wiring and tightening. The screws of
unused screw terminals must be screwed to the
stop, so that they cannot loosen and get lost.
CAUTION
DANGER
DANGER

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Page 3 | ENG
1.8 Start-up
• Is the device properly set and programmed
(function; max. counting frequency for coun-
ters)?
1.9 Failure possibilities and causes
Impossible to use the keys:
• Key lock input activated
Counter does not count:
• Wrong or reversed wiring of the counting input
• Setting of an input signal not matching the
pulse generator.
• No ground connection between the pulse
generator and the counter.
• Signal levels do not reach the switching
threshold of the counter.
Relay output signal missing:
• Output contact short-circuited
• Output signal (fugitive signal duration) pro-
grammed too short
• Relay contact defective due to excessive load
• Relay current below min. value
Displaying noFunc:
• Battery is unloaded and must be replaced.
If, despite all, your device still does not operate,
contact your local representative or call us
directly for technical support.
When sending your device back, please attach
a short description of the failure, of the program-
ming and of the connection diagram, in order to
allow us to reproduce a possibly existing defect
and to repair your device as quickly as possible.
2. Inputs
2.1 Reset input terminal 6
This input is connected functionally in parallel
with the red Set key and sets the counter to
zero in case of adding counting and to the pre-
set value in case of subtracting counting. The
reset function is dynamic.
The device has been designed for overvoltage
category II. If higher transient voltages cannot
be excluded, additional protection measures
must be taken in order to limit the overvoltage to
the values of CAT II.
Advice on noise immunity
All connections are protected against external
sources of interference. The installation location
should be chosen so that inductive or capacitive
interference does not affect the device or its
connecting lines! Interference (e.g. from switch-
mode power supplies, motors, clocked control-
lers or contactors) can be reduced by means of
appropriate cable routing and wiring.
Measures
• Use only shielded cable for signal and control
lines. Connect cable shield at both ends. Mini-
mum cable conductor cross-section 0.14 mm2.
• The shield connection to the equipotential
bonding should be as short as possible and
with a contact area as large as possible (low-
impedance).
• Only connect the shields to the control panel, if
the latter is also earthed.
• Install the device as far away as possible from
noise-conducting cables.
• Avoid routing signal or control cables parallel
to power lines.
1.7 Cleaning and maintenance
The front side of the unit should only be cleaned
using a soft damp (water!) cloth. Cleaning of
the embedded rear side is not planned and is
the responsibility of the service personnel or of
the installer.
In normal operation, this device is maintenance-
free. Should the device nevertheless not ope-
rate properly, it must be sent back to the manuf-
acturer or to the supplier. Opening and repairing
the device by the user is not allowed and can
adversely affect the original protection level.

Page 4 | ENG
2.2 Counting input (Start input) terminal 5
Input damped to 25 Hz for pulse counting with
the pulse preset counter or static start input with
the time preset counter (time counting active
when input is active, time indicator located on
top left flashes when time counting is active).
Note: The reset input (terminal 6) and the coun-
ting input (terminal 5) are inputs with a common
connection (terminal 7) and must be controlled
wit the same polarity.
2.3 Key lock input
Tre front keys (including the set key) are locked
when this input (terminal 2) is set to +3 VDC
(terminal 1).
3. Output
Relay with potential-free contact, contact pro-
grammable as normally open or normally closed
(terminal 3 and terminal 4). For the adding count,
the relay is activated when > preset value, for
the subtracting count, it is activated when < 0.
The output signal is programmable as a fugitive
signal between 0.1 and 99.9 seconds or as a
bistable signal with the setting 0.0 (Loop OFF) no
automatic repetition. When the relay is active, a
colon symbol is displayed on the left end of the
lower row. The output relay shall not exceed a
switching frequency of 4 Hz.
4. Setting the operating mode and the
operating parameters
4.1 New installation
In case of a new installation of the counter, after
a battery replacement that lasted more than 20
seconds, or if the counter switched over to the
„NoFunc“ safety mode because of a too low
battery voltage, the preset counter switches
automatically to the programming mode. All
parameters must then be input again (see 4.2).
Parameter modification is also possible during
operation. For safety reasons, to access the
programming mode, the reset key and the keys
of the 5th and 6th decades must be pressed
simultaneously. The lower display line then dis-
plays the message INIT. If these 3 keys remain
pressed, a countdown from 5 to 0 takes place
in one-second intervals. If the keys are released
during this countdown, the device switches back
to the previous operating mode. If the keys are
released after 0 is reached, parameter setting is
activated and the first parameter is displayed.
4.2 Setting the parameters
The key of the 1st decade allows switching
among the available parameters (e.g. add-sub)
and the key of the 6th decade allows switching
over to the following function. The duration of the
fugitive pulse is set using the keys of decades
1-3. After the last input (dP), the key of the 6th
decade allows jumping back to the start of the
programming routine; pressing simultaneously
the reset key and the keys of the 5th and 6th
decades allows saving the parameters.
Note: Every time the programming routine is
called up, the counter switches back to the
basic parameter setting, i. e. the previous pro-
gramming is lost and the counter and preset
values are reset to zero.
4.3 Parameters description
(see also the function sequence)
Funct.Count: Pulse preset counter operating
mode
Funct.Time: Time preset counter operating
mode
tMode: Programmable time range (only
for Funct.Time), SEC=seconds,
Min=minutes, hour=hours
Count Add: Adding counting mode
Count Sub: Subtracting counting mode
LooP off: Automatic repetition off
When parameter LooP is „off“ and
dELAY time is 0.0, the output is
activated when the preset value
is reached and remains activated
until reset is performed.
LooP on: Automatic repetition on
When parameter „LooP is „on“, the
counter is reset automatically and
the output emits a fugitive pulse
for the time of the duration set in
dELAY.
rELAY no: Normally open contact
rELAY nc: Normally closed contact
dELAY: Output signal duration: fugitive
signal programmable from 0.01

english
Page 5 | ENG
allows preventing malfunctions. After battery
replacement in „noFunc“ mode, the device
requires re-parameterizing. Please read chapter
Battery replacement to that purpose.
Note: In order to avoid loosing the
settings and values because of
switching to Safe Mode, the service
plan of the device should include
timely battery replacement in func-
tion of the ambient temperature and
of the switching cycles of the relay.
5.5 Battery replacement
Before replacing the batteries, disconnect the
voltages or switch the device off. Disconnect
the connector from the device. This also makes
sure that no untimely pulses set the device in
an undefined state during battery replacement.
Then push the battery lid backwards and remo-
ve the 2 batteries. Position the new batteries
so that the „-“ pole is connected to the battery
holder marked with „-“ on the printed circuit.
After battery replacement, the display may go
on displaying the LowBat message for 2 more
minutes. Pressing the reset key can shorten this
delay, as the device checks the current battery
voltage every time this key is pressed. However,
this also resets the current counter value.
Important: If battery replacement
lasts longer than 20 seconds, the
parameters, the preset value and
the current counter value can be
erased. In order to prevent this loss
of information, we strongly recom-
mend replacing the batteries one
after the other.
Only use the batteries described in the Techni-
cal Data. Otherwise, proper operation cannot be
guaranteed.
– 99.9 seconds, 0.0 = bistable
output (active until reset) program-
mable only for Loop off, in case of
Loop on, 0.0 is set automaticaly to
1.0 second.
dP: Programmable decimal point:
pulse preset counter: 0 - 0.00000
only for display purposes,
time preset counter 0 – 0.0
(seconds) 0 – 0.00 (minutes,
hours) determines the resolution.
If the relay output is switched from
„no“ to „nc“, the relay condition
must be taken over by pressing
the reset key.
5. Operating the counter
5.1 Setting or resetting
The red set key or a pulse on the reset input
sets the counter to zero in adding mode and to
the preset value in subtracting mode.
5.2 Preset setting
The preset value is displayed in the lower dis-
play line. Setting is carried out with the 6 preset
keys, each assigned to a decade. The set or
modified preset value is taken over at the sub-
sequent setting or resetting of the counter.
5.3 Overflow or underflow
In adding mode, overflow passes from 999999
to zero, in subtracting mode from zero to
999999. The output signal remains unchanged.
The display flashes in case of overflow or
underflow. The counter stops after the overflow
or underflow of an additional decade.
5.4 Lo-Bat indicator
In case of a too low battery load, the message
Lo-bat is diaplayed and the display flashes.
The batteries must be replaced when „Lo-bat“
is displayed. If the battery voltage decreases in
such a way that safe relay switching cannot be
ensured any more, the counter switches to Safe
Mode and displays the message „noFunc“. In
this mode, the device does not count any more
pulses or times, and the relay remains in its
last position. Thys way, the user knows exactly
whether the plant is operating optimally, which
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5.6 Segments test
Segments test is activated by pressing simul-
taneously the reset key and the keys of the
5th and 6th decades. Init 5 is then displayed;
release immediately the keys, the segment test
is started and all display segments are displa-
yed. Pressing the 1st decade key calls up the
programming mode; all parameters must then
be re-programmed.
6. Terminal assignment
Terminal
no.
1+3 VDC for key lock on terminal 2
2Key lock input
3Relay contact
4Relay contact
5
AC/DC optocoupler counting input /
start input (.820) / NPN counting input
/ start input (.850)
6AC/DC optocoupler reset input (.820)
/ NPN reset input (.850)
7Common AC/DC input (.820) / 0V
input (.850) for terminals 6 and 5
7. Connection example
Device type:
x.901.xxx.820
12 ... 250 VAC/VDC
V AC/DC
Device type:
x.901.xxx.850
NPN
8. Factory programming:
Function(Funct): counter(Count)
Counting mode(Count): adding(add)
Auto. repetition(LooP): none(oFF)
Output contact(rELAY): normally open
Output signal duration(dELAY):
bistable output(0.0)
Decimal point(dP): none(0)
Key lock
Count/
Start
Count/
Start
Key lock
Reset
Reset

english
Page 7 | ENG
Application area: Pollution level 2
Insulation
Front side: Double /
reinforced insulation
Relay: Basic insulation
UL approval: File no.: E128604
10.3 Mechanical data
Protection level: IP65 (font side)
Weight: appr. 80 g
10.4 Inputs
Inputs: Reset, counting and key
lock inputs
Input polarity
(for reset and counting/start inputs):
12 ... 250 V AC/DC: bidirectional optocoupler
input
NPN: NPN input activated by
transistor or contact
Key lock input: is switched to +3 V DC
(terminal 1)
Min. input pulse duration:
Reset input: 50 ms
Key lock input: 15 ms
Input switching level:
12 ... 250 V AC/DC: LOW: < 1 V AC/DC
HIGH: 12...250 V AC/DC
NPN: LOW: 0 ... 0,8 V DC
HIGH: 2.5 ... 30 V DC
Input frequency
Pulse counter: max. 30 Hz
Time counter: Measuring pulses
< 200 ms are not
measured accurately
Accuracy: System error
+/- 100 ms per
measuring pulse
Time accuracy: 200 ppm
Input resistance: 110 kΩ
9. Interference suppression measures
The following interference suppression
measures may be required: if the output swit-
ches inductive loads (relays, solenid valves),
interferences must be suppressed by means of
a freewheeling diode for direct current and of
an RC element for alternating current. For safe
and EMC-compliant operation, use shielded
cables for the control inputs (counting, reset and
key lock inputs). The shield must be connected
at both ends. If this is not possible, a capacitor
(e.g. 10 nf) may be integrated on one side in the
shield connection.
10. Technical data
10.1 General technical data
Display: 2-line LCD display, each
with 6 decades 999999;
height 7 resp. 4,5 mm
Operating temperature: -20°C ... +65°C
(not condensing)
Storage temperature: -25°C ... +70°C
Altitude: up to 2000 m
10.2 Electrical data
Voltage supply: 2 replaceable lithium
batteries type 1/2 AA
Lithium 3.6 V
Data backup: min. 8 years for 5 x 106
output relay switching
cycles and 25°C opera-
ting temperature
EMC
Interference emission: EN 55011 Class B
Interference immunity: EN 61000-6-2,
EN 61326-1
Device safety
Designed to: EN 61010
Protection class: 2 (front side)
Only the front side is classified as
accessible for the operator.

Page 8 | ENG
10.5 Outputs
Outputs: bistable relay with poten-
tial-free contact – pro-
grammable as normally
open or normally closed
Max. switching voltage:250 V AC / 30 V DC
Max. switching current:2 A
Max. switching capacity:
60 VA / 30 W
Mechanical service life:1x107
Electrical service life: 5x105(1A 30Vdc)
Output response time: < 20 ms, max. 4 Hz
Insulation coordination:Basic insulation
UL ratings: 2A, 30Vdc, 50°C
10.6 Fuses / overcurrent limitations
Input signals: In case of a failure, the current
must be limited to a safe value via the inputs.
We recommand a 0.1A/T fuse.
Relay: The maximum switching current of 2A
shall in no case be exceeded.
10.7 Connections
7 plug-in screw terminals, pitch 5.08, cable
cross section max. 2.5 mm.
10.8 Insulation coordination
Connections among each other
x.901.xxx.820: only the counting and reset
inputs have double / reinforced insulation
x.901.xxx.850: generally only basic insulation
10.9 Consumables
Battery: order code: N060045 Tadiran Lithium
SL350/S ½ AA 3.6V 1.2Ah

english
Page 9 | ENG
Funktionsablauf
Press Reset
key together
with
5 + 6 button change battery
count down
with 1sec clock
<5s <1s
Init 5 Init 4,3,2, 1 Init 0
Segmenttest
8.8.8.8.8.8
:
8.8.8.8.8.8
Operating
Mode
Funct.
Count
Funct.
tImE
tModE
hour
, Min, SEC
select one
value
Count
Add, Sub
select one
value
Count
Add, Sub
select one
value
LooP
oFF;on
select one
value
LooP
oFF;on
select one
value
rELAY
no, nc
select one
value
rELAY
no, nc
select one
value
dELAY
01.0
to change
value
dELAY
01.0
to change
value
dP
0, 0.0, 0.00, 0.000,
0.0000, 0.00000
select one
value
dP
SEC: 0, 0.0
hour+Min: 0, 0.0, 0.00
select one
value
SAVE 1-2 Sec
Operating
Mode
=5s
1
6
6
1
1
6
1
6
1
6
1
6
1
6
1
2
3
6
1
6
1
PressResetkey
togetherwith
5+6button
timefor
batterychange
1
6
6
1
6
1
2
3
6
1
1
<20s
>20s
1
11. Programming menu

Page 10 | ENG
13. Scope of the delivery
Counter 901
2 lithium batteries
1 plug-in screw terminal
1 front bezel for screw mounting, installation
cross-section 50 x 50 mm
1 front bezel for clip mounting, installation cross-
section 50 x 50 mm
1 mounting clip
1 template for front panel cut-out
1 operating instructions manual
14. Order code
6.901.x10.8y0
2 = 12 … 250 V AC/DC inputs
5 = NPN inputs
0 = Kübler
A = Neutral
15. Battery ordinance
This device includes lithium batte-
ries. In compliance with the Battery
Ordinance, we want to point out the
following:
Batteries shall not be disposed of in the residual
waste; you are obliged by law to return them. You
can send the complete devices back to us after
use. If you can remove the batteries properly, you
can also dispose of them at a municipal collection
point or at a retailer collecting batteries.
Specific provisions on the return of lithium
batteries:
Avoid short-circuits! Protect the poles of the
battery with insulating adhesive tape. The poles
of a lithium battery shall not come in contact
with metal objects, neither by accident nor inten-
tionally !
Pollutant-containing batteries bear a symbol
made of a crossed-out bin and the chemical
symbol of the heavy metal that determines their
classification as containing pollutants. Thank you
for your help!
12. Dimensions
Dimensions in mm [inch]