Kracht AS 8 User manual

D.0037710002
Operating instructions (Translation)
Indicator AS 8
88037710002-01
Englisch
2018-09-19

Table of Content
1 General 4
1.1 About the documentation 4
1.2 Manufacturer´s address 4
1.3 Symbolism 4
2 Safety 6
2.1 Intended use 6
2.2 Personnel qualification and training 6
2.3 Basic safety instructions 6
2.4 Basic hazards 7
3 Device description 8
3.1 Functional principle 8
3.2 Possible versions 9
3.3 Type key 11
4 Technical data 12
4.1 General information 12
4.2 Electrical data 13
5 Transport and storage 14
5.1 Transport 14
5.2 Storage 14
6 Electrical connection 15
6.1 Terminal assignment 15
6.2 Setting for the supply voltage 16
6.3 Terminal layout: Supply voltage 17
6.4 Terminal layout: Sensor operating voltage 18
6.5 Terminal layout: Relay contacts 19
6.6 Terminal layout: Analogue output 19
6.7 Terminal layout: Printer 20
6.8 Configuration via serial interface 22
7 Operation start-up 23
7.1 Preparation 23
7.2 Input 23

7.2.1 Start input 23
7.2.2 Changing the menu code 24
7.2.3 Changing the input value 24
7.2.4 End input 24
7.3 Dip switch 25
7.3.1 Setting for the measured variable 25
7.3.2 Setting for the time basis 26
7.4 Input parameter 27
7.4.1 Overview menu code numbers 27
7.4.2 Menu code 00 28
7.4.3 Menu code 01 29
7.4.4 Menu code 02 29
7.4.5 Menu code 03 - 06 30
7.4.6 Menu code 07 31
7.4.7 Menu code 08 32
8 Maintenance 33
9 Repairs 34
9.1 Safety instructions for repair 34
9.2 General 34
9.3 Detecting and eliminating failures 35

1 General
1.1 About the documentation
These operating instructions describe the installation and operation of the
following device:
Indicator AS 8
The device is manufactured in different versions. Information about the ver-
sion concerned in the individual case can be found on the device's type plate.
These operating instructions are a component of the device and must be kept
accessible for the personnel near the device at all times.
If you have any questions about these operating instructions, please contact
the manufacturer.
1.2 Manufacturer´s address
KRACHT GmbH
Gewerbestraße 20
DE 58791 Werdohl
phone: [phone]
fax: [phone]
email: [email protected]
web: www.kracht.eu
1.3 Symbolism
DANGER
Identificationofanimmediatehazard,whichwouldresultindeathorsevere
bodily injury if not avoided.
WARNING
Identification of a potential medium risk hazard, which would lead to death
or severe bodily injury if not avoided.
Indicator AS 8
42018-09-19 88037710002-01

CAUTION
Identification of a low risk hazard, which could lead to minor or medium
bodily injury if not avoided.
NOTICE
Flagging of notices to prevent property damage.
Identification of basic safety instructions. Non-compliance can lead to haz-
ards for people and the device.
Flagging of special user tips and other especially useful or important infor-
mation.
Indicator AS 8
88037710002-01 2018-09-19 5

2 Safety
2.1 Intended use
1. The unit is provided to display and evaluate fluid flow.
2. The device may only be operated with KRACHT flow meters or trans-
mitters with incremental input signals.
3. The unit must not be used in areas with potentially explosive atmos-
pheres, in medical equipment areas or in areas of usage according to
DIN EN 61010-1:2011-07; VDE 04-1:2011-07.
4. Thedevicemaybeoperatedonlyinusualindustrialatmospheres.Ifthere
are any aggressive substances in the air, always ask the manufacturer.
5. Operation of this unit is only permissible with compliance with these op-
erating instructions.
Deviating operating conditions require the express approval of the man-
ufacturer.
6. In case of any use of the device not according to specification, any war-
ranty is voided.
2.2 Personnel qualification and training
The staff designated to assemble, operate and service the device must be
properly qualified. This can be through training or specific instruction. Per-
sonnel must be familiar with the contents of this operating instructions.
Read the operating instructions thoroughly before use.
2.3 Basic safety instructions
1. Comply with existing regulations on accident prevention and safety at
work along with any possible internal operator regulations.
2. Pay attention to the greatest possible cleanliness.
3. Wear suitable personal protection equipment.
4. Do not remove, make illegible or obliterate type plates or other referen-
ces on the device.
5. Do not make any technical changes on the device.
6. Maintain and clean the device regularly.
7. Use spare parts approved by the manufacturer only.
Indicator AS 8
62018-09-19 88037710002-01

2.4 Basic hazards
WARNING
Exposed electrical components!
Supply voltage 120 V AC / 230 V AC
1. Follow the special safety regulations during all work on electrical instal-
lations.
2. Only allow electricians to work on electrical systems.
3. Only use connection lines that are resistant to ambient influences and
media.
WARNING
Malfunction!
Riskofinjuryduetooperatingmistakesorfailureoftheunitwhencontrolling
plants or process sequences.
1. Suitable safety precautions must be taken when the device is used.
2. In case of a fault or change of the operating behaviour, put the unit out
of service.
Indicator AS 8
88037710002-01 2018-09-19 7

3 Device description
3.1 Functional principle
Devices of the type series AS 8 are display and control devices. The different
measurements and displays are defined via the variant selection.
The display unit is freely programmable after defining the variants. Program
using three buttons that are accessible after removing the front panel. For the
version with membrane keypad, the entry is made directly on the front panel.
Display and control units of the type series AS 8 process incremental input
signals from KRACHT flow meters and other transducers.
If the unit is operated with a flow meter that has one sensor, it is referred to
as single-channel sampling.
If the unit is operated with a flow meter that has two sensors, it is referred to
as two-channel sampling. The two-channel scanning facilitates a higher
measuring resolution and detection of the direction of the flow rate.
Two relays are always available for external subsequent processing. An an-
alogue output or a serial interface are available depending on the version.
Variants
Standard
The AS 8 standard version is a display unit for dynamic flow and volume
measurement.
The input signals are filtered in the unit, converted, and computed into the
physical sizes of flow rate or volumes.
Indicator AS 8
82018-09-19 88037710002-01

3.2 Possible versions
Installed unit AS 8
Standard
AS 8 as 19" plug-in unit
The AS 8 is installed in a 19" front
panel 3U 25TE.
All connections of the AS 8 are
wiredtoaEuro card and are avail-
able there on a 32-pin male multi-
point connector for further pro-
cessing.
Wiring of the AS 8 to the male multipoint connector
PIN Male multipoint
connector Terminal AS 8 Code
ac2 8 12 V Encoder supply
ac4 10 Channel 1
ac6 11 Channel 2
ac8 12 Totalization release
ac10 13 Printer release
ac12 14 TXD / Analogue output (+)
ac14 15 RXD / Analogue output (-)
ac16 5 Relay contacts 1
ac18 6 Relay contacts 2
ac20 n.c.
ac22 2 Power supply (GND, N)
ac24 1 12/24 V DC, 120/230 V AC (+, L)
ac26 3 PE
ac28 n.c.
ac30 7 Relay contacts Basis
ac32 9 0 V
Indicator AS 8
88037710002-01 2018-09-19 9

AS 8 in desktop housing
AS 8 in desktop
housing is available
in "Analogue output"
and"Serialinterface"
versions.
Rear view
Version: Analogue output
Version: Serial interface
Indicator AS 8
10 2018-09-19 88037710002-01

3.3 Type key
Ordering example AS 8
AS 8 - U - 230 ... / F
1. 2. 3. 4. 5.
Explanation of type key AS 8
1. Product name
2. Output signal
UAnalogue output
Tension RS Serial interface RS 232
IAnalogue output
Current Owithout analogue output
Only with 12 V and 24 V
(RS 232 available)
3. Supply voltage
230 230 V AC - 50/60 Hz 24 24 V DC
120 120 V AC - 60 Hz 12 12 V DC
4. Variants
No specification Standard
Flow and volume measurement
RP Flow rate controller
DOS Dosing program
(without analogue output)
ZM Cylinder stoke measurement
A2F Flow rate indication and addition display
D2F Flow rate indication and difference display
D2C Volume indication and difference display
VA Ratio display
V2F Flow rate indication and ratio display
PUR Flow rate indication, ratio display and ratio controller
TOR Gate window measurement
FM20 Flow rate indication switchable to all KRACHT flow meters
SIM Simulator for flow meter
5. Keypad
No specification Buttons behind the front panel
FWith membrane keypad
Indicator AS 8
88037710002-01 2018-09-19 11

4 Technical data
4.1 General information
General information AS 8
Display
Principle 7 Segment LED
13,2 mm; Red
Display 0.000 - 9999.
(Floating point number display)
Overflow (>9999) Display: 9999.
(<9999) Display: -9999.
Status LEDs K1 and K2 for Relays 1 and
2
Ambient temperature Operating temperature 0 °C - 60 °C
Storage temperature -25 °C - 85 °C
Keypad Version Standard 3 Keys
Behind the front panel
F3 Keys
on the front panel
Material Housing Plastic
Dimensions
Height x Width x Depth [mm]
Front frame 96 mm x 48 mm, DIN 43700
Installation depth approx. 122 mm
With connector strip
Panel cutout 92+0,5 mm x 45+0,5 mm
Electrical connection
Installed unit 15 Pinned screw terminal block
AS 8 as 19" plug-in
unit 32 pin male multipoint connector
AS 8 in desktop hous-
ing Attaching plug
Protection class (DIN 40050) IP 54
Weight 0,4 kg
Indicator AS 8
12 2018-09-19 88037710002-01

4.2 Electrical data
Electrical data AS 8
Processor PIC17C42
Mains adapter
Supply voltage
230 V AC (-10% - +6%) / 50-60 Hz
120 V AC (-10% - +6%) / 60 Hz
24 V DC
12 V DC
Power consumption approx. 3,5 W
Sensor operating voltage
(1) 24 V DC ± 20%, 50 mA
12 V DC ± 20%, 50 mA
Digital input (2x)
Input impedance ≥7500 Ω
Input amplitude low ≤9 V
high ≥12 V
Typical switching time 1 ms
Analogue output (1x)
Adjustable as voltage output or current output with jumper
Power output ± 10 V, 0 - 10 V, 2 - 10 V / Burden ≥1 kΩ
Resolution 10 bit, short-circuit proof
Current output ± 20 mA, 0 - 20 mA, 4 - 20 mA / Burden ≤
250 Ω
Resolution 10 bit, short-circuit proof
Sensor input (1x / 2x)
(2 x One-channel)
(1 x Two-channel)
Input impedance ≥7500 Ω
Input amplitude low ≤9 V
high ≥12 V
Flow rate measuring prin-
ciple
Permanent period measurement (Rising
edge)
Gate window measurement
Max. input frequency 1 Hz - 2500 Hz
Serial interface (1x)
RS 232
Cable length ≤15 m
Input voltage max. ± 30 V
Input current typ. ± 3 mA
at ± 9 V input voltage
Output current typ. ± 3 mA
Setting 9600 baud, 8 bit, no parity, 1 stop bit
Relay contacts (2x) One closer each
24 V / 1 A Resistive load
Typical switching time 6 ms
(1) Sensor: Flow meter, Measuring transducer
Indicator AS 8
88037710002-01 2018-09-19 13

5 Transport and storage
5.1 Transport
●After receipt, check the device for transport damages.
●If transport damage is noticed, report this immediately to the manufac-
turer and the carrier. The device must then be replaced or repaired.
●Dispose of packing material and used parts in accordance with the local
stipulations.
5.2 Storage
In case of storage, a dry, dust-free and low-vibration environment is to be
ensured. The device is to be protected against influences from weather,
moisture and strong fluctuations of temperature.
Indicator AS 8
14 2018-09-19 88037710002-01

6 Electrical connection
6.1 Terminal assignment
The electrical connections are on screw terminals.
ForreasonsofprotectionagainstcontactaccordingtoEN61010,conductor
connection must only be provided with ferrules with insulating caps. Do not
use connections not assigned by the factory for any other purpose.
We recommend shielding all sensor connection cables and grounding the
shielding on the evaluation unit to avoid interference. The sensor connec-
tion cables should not be routed in the same cable harness as the mains
supply and the output contact cables.
Terminal assignment: Screw terminal
A = Transformer / DC/DC converter B = Sensor
Explanation
Terminal 1 Power supply Terminal 9 0 Volt (Sensor)
Terminal 2 Terminal 10 Channel 1
Terminal 3 PE Terminal 11 Channel 2
Terminal 4 Shield Terminal 12 Totalization release
Terminal 5 Relay contacts 1 Terminal 13 Printer release
Terminal 6 Relay contacts 2 Terminal 14 Printer interface
or
Analogue output
Terminal 7 Relay contacts Basis Terminal 15
Terminal 8 24 Volt (Sensor)
Indicator AS 8
88037710002-01 2018-09-19 15

Terminal assignment: Printer interface Terminal assignment: Analogue output
Explanation Explanation
Terminal 9 GND Terminal 14 PLUS
Terminal 14 TXD Terminal 15 MINUS
Terminal 15 RXD
6.2 Setting for the supply voltage
Supply voltage 230 V AC - 50/60 Hz
(PCB view from below)
Close soldering bridge 1 to 3
Indicator AS 8
16 2018-09-19 88037710002-01

Supply voltage 120 V AC - 60 Hz
(PCB view from below)
Close soldering bridge 1 to 2
Close soldering bridge 3 to 4
6.3 Terminal layout: Supply voltage
The device is operated with an AC voltage 230 V AC / 120 V AC or with a DC
voltage 24 V DC / 12 V DC.
Information about the version concerned in the individual case can be found
on the device's type plate.
Terminal assignment: Alternating current 240 V AC / 120 V AC
Terminal 1 L
Terminal 2 N
Terminal 3 PE
Terminal assignment: DC voltage 12 V DC / 24 V DC
Terminal 1 +
Terminal 2 GND
Terminal 3 PE
Indicator AS 8
88037710002-01 2018-09-19 17

Fire protection
On the device mains side, use the external fuse recommended on the volt-
age plate.
According to EN 61010, 8 A /150 VA (W) must never be exceeded in the
event of a fault.
Recommended external fuse for 120 V AC / 230 V AC supply voltage: 100
mA.
6.4 Terminal layout: Sensor operating voltage
The device is operated with flow meters or transmitters with incremental input
signals.
Sensor operating voltage
Connect the sensor supply voltage to Terminals 8 and 9. Do not use the
sensor supply voltage to supply ungrounded inductive or capacitive loads.
The sensor supply voltage is not short-circuit proof.
Terminal assignment: Sensor operating voltage
Tension Max. permissible current
Terminal 8 24 V DC ± 20 % 50 mA
Terminal 9 0 V
The residual ripple of the sensor supply voltage depends on the load.
Signal input
If the unit is operated with a flow meter that has two sensors, it is referred to
as two-channel sampling.
If the unit is operated with a flow meter that has one sensor, it is referred to
as single-channel sampling.
Terminal assignment: Signal input
1-Channel design 2-Channel design
Terminal 10 X X
Terminal 11 - X
Sensor supply voltage for 12 V version devices
For 12 V version devices, connect the sensor supply directly through the
voltage supply (power supply unit) on the control cabinet side. Connect ter-
minal 9 (GND) to the power supply ground.
Indicator AS 8
18 2018-09-19 88037710002-01

6.5 Terminal layout: Relay contacts
The device has two relay contacts.
The relays are equipped with normally open contacts.
Maximum switching voltage: 30 Volt
Maximum switching current: 1 A ΩLoad
Terminal assignment: Relay contacts
Relay Contacts
(signal) Connection (Basis)
K0 Terminal 5 Terminal 7
K1 Terminal 6
6.6 Terminal layout: Analogue output
The device has an analogue output or a serial interface, depending on the
version.
Terminal assignment: Analogue output
Terminal 14 PLUS
Terminal 15 MINUS
The current output / voltage output setting is made internally using jumpers.
Setting: JP - Current output
The gain can be set at P1.
The offset can be set at P2
Indicator AS 8
88037710002-01 2018-09-19 19

Setting: JP - Power output
The gain can be set at P1.
The offset can be set at P2
6.7 Terminal layout: Printer
The device has an analogue output or a serial interface, depending on the
version.
The analogue output or serial interface is set internally using jumpers.
Setting: JP - Serial interface
Terminal assignment: Serial interface
Terminal 15 RXD
Terminal 14 TXD
Terminal 9 GND
Indicator AS 8
20 2018-09-19 88037710002-01