Akytec MV110-8AS User manual

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
MV110-8AS
Analog input module
8 channel
User guide
MV110-8AS_2019.08_0226_EN
© All rights reserved
Subject to technical changes and misprints

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
1
Contents
1. Description......................................................................................................................................................2
1.1 Function...................................................................................................................................................2
1.2 RS485 network ........................................................................................................................................2
1.3 Design......................................................................................................................................................2
2. Specifications.................................................................................................................................................4
2.1 Galvanic isolation.....................................................................................................................................4
2.2 Environmental conditions.........................................................................................................................4
3. Safety...............................................................................................................................................................6
3.1 Intended use............................................................................................................................................6
4. Installation.......................................................................................................................................................7
4.1 Wiring.......................................................................................................................................................7
4.1.1 Inputs ...................................................................................................................................................7
4.1.2 Different input signals ..........................................................................................................................9
5. Configuration................................................................................................................................................10
6. Operation.......................................................................................................................................................12
6.1 Signal processing ..................................................................................................................................12
6.1.1 Sampling............................................................................................................................................12
6.1.2 Signal change rate limitation..............................................................................................................12
6.1.3 Digital Filter........................................................................................................................................12
6.1.4 Linear signal.......................................................................................................................................12
6.2 Modbus communication.........................................................................................................................13
6.3 Error diagnosis.......................................................................................................................................14
7. Factory settings restoration........................................................................................................................15
8. Maintenance..................................................................................................................................................17
9. Transportation and storage.........................................................................................................................18
10. Scope of delivery..........................................................................................................................................19
Appendix A. Dimensions ..................................................................................................................................20

Description
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
2
1. Description
1.1 Function
The MV110-8AS analog input module is an extension module with 8 analog inputs for the
following standard signals:
– 4-20 mA
– 0-20 mA
– 0-5 mA
– 0-10 V
The module has the following galvanically isolated circuits:
– Power supply
– Analog inputs
– RS485 interface
Separate inputs are not galvanically isolated.
The module performs the following functions:
– Connection of peripherals with analog outputs
– Conversion of analog signals to digital values
– Sensor-based status diagnostics
– Diagnostics of RS485 network status
– Generation of appropriate error signals or alarm signals
– Slave device in Modbus protocol structure
The module supports Modbus RTU, Modbus ASCII protocols with automatic protocol
identification.
The module is to be configured using ‘M110 Configurator’ software via RS485-USB inter-
face adapter (not included).
1.2 RS485 network
The I/O modules of Mx110 series use common standard RS485 for data exchange. The
RS485 serial interface is based on two-wire technology and half-duplex mode. Protocols
Modbus RTU, Modbus ASCII and akYtec are supported. The network consists of a mas-
ter device and can contain up to 32 slave devices. The maximum length is 1200 m. The
number of slave devices and the network length can be increased with using a RS485
interface repeater.
Separate devices (slave devices) are connected according to linear (bus) topology. It
means that the line goes from the first device to the second one, from the second one to
the third one, etc. Star connections and spur lines are not allowed.
Line reflections always occur at the open bus ends (the first and the last node). The high-
er the chosen data transmission rate, the stronger they are. A terminating resistor is
needed to minimize reflections. Experience proves that the most efficient practice is to
use terminating resistors of 150 ohm.
The module can be used as slave devices only. Master device can be PLC, PC with
SCADA software or control panel.
1.3 Design
─Enclosure: plastic, grey, for DIN-rail or wall mounting
─Terminal blocks: 2 plug-in terminal blocks with 24 screw terminals
─LED „POWER“: power supply indicator
─LED „RS-485“: flashes at data exchange via RS485 interface
─LED „FAULT“: is on in case of fault status (see 6.3)

Description
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Fig. 1.1 Front View
Dimensional Sketches are given in Appendix A.
Under the cover on the front panel of the module there is a 10-pole pin strip XP1 with the
jumper JP1 (see Figure 4.1, 7.3) for factory settings restoration (see 7).

Specifications
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
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2. Specifications
Table 2.1 General Specifications
Power supply
24 (21…35) V DC
Power consumption, max
6 W
Inputs
digital

analog
8
Outputs
digital
-
analog

Sampling time for each input (1)
5±2% ms
Basic error
0.25 %
Temperature influence (2)
0.12 %
Resolution
0(4)-20 mA
4 μA
0-5 mA
1 μA
0-10 V
2 mV
Input resistance
0(4)-20 mA
130…250 ohm
0-5 mA
130…500 ohm
0-10 V
>200 ohm
Permissible input voltage
-40…+40 V
RS485 interface
Terminals
D+, D-
Protocols
Modbus RTU/ASCII, akYtec
Baud rate
2.4…115.2 kbit/s
Data bits
7, 8
Parity control
even, odd, none
Stop bits
1, 2
Dimensions
63 x 110 x 75 mm
Weight
approx. 240 g
Material
plastic
(1) Because the sampling of inputs is performed sequentially, the total sampling time is
equal to the sum of the times of all connected inputs.
(2) % FS, per 10 °C of deviation from (20 ±5) °C within the permissible limits.
2.1 Galvanic isolation
The device has three potential groups:
─Power supply 24 VDC
─Analog Inputs
─RS485
Table 2.2Galvanic isolation
Groups
Analog inputs
(3-12; 15-24) RS485 (13;14) Enclosure
Power supply (1.2)
1500 V
1500 V
3000 V
Analog inputs
(3-12; 15-24) - 1500 V 3000 V
RS485 (13;14)
-
-
3000 V
2.2 Environmental conditions
The module is designed for natural convection cooling. It should be taken into account
when choosing the installation site.
The following environment conditions must be observed:
─clean, dry and controlled environment, low dust level

Specifications
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
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─closed non-hazardous areas, free of corrosive or flammable gases
Table 2.3Environmental conditions
Condition Permissible range
Ambient temperature
-20…+55°C
Transportation and storage
-25…+55°C
Relative humidity
up to 80% (at +25°C, non-condensing)
IP code
IP20
Altitude
up to 2000 m above sea level

Safety
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3. Safety
Explanation of the symbols and keywords used:
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, could
result in minor or moderate injury.
►
NOTICE
NOTICE indicates a potentially harmful situation which, if not avoided, may result
in damage of the product itself or of adjacent objects.
3.1 Intended use
The device has been designed and built solely for the intended use described in this
guide, and may only be used accordingly. The technical specifications contained in this
guide must be observed.
The device may be operated only in properly installed condition
Improper use
Any other use is considered improper. Especially to note:
─This device should not be used for medical devices which receive, control or other-
wise affect human life or physical health.
─The device should not be used in an explosive environment.
─The device should not be used in an atmosphere with chemically active substance

Installation
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4. Installation
WARNING
Improper installation
Improper installation can cause serious or minor injuries and damage the de-
vice. Installation must be performed only by fully qualified personnel.
─The device is intended to be mounted in a cabinet on DIN-rail or on the wall.
─Install the module in a clean, dry and controlled environment. Further requirements
are described in paragraph 2.1.
─The module is designed for convective self-cooling. This should be taken into account
when selecting the installation site.
4.1 Wiring
WARNING
Dangerous voltage
Electric shock could kill or seriously injure.
All electrical connections must be performed by a fully qualified electrician.
Ensure that the mains voltage matches the voltage marked on the nameplate!
Ensure that the device is provided
with its own power supply line and electric
fuse!
►
NOTICE
Switch on the power supply only after the wiring of the device has been com-
pletely performed.
– Terminal connections are shown in Fig. 4.1, terminal assignments are given in Table
4.1.
– The inputs should be wired in accordance with Fig. 4.2 – 4.3.
– Connect the supply voltage to the terminals 24V and 0V.
– The maximum wire cross-section for power supply is1.5 mm²
►
NOTICE
EMC-safety
Signal cables should be routed separately or screened from the supply cables.
Only shielded cable may be used for data transmission and signal lines.
Shield in the control cabinet for best electromagnetic immunity recommended.
– Connect the RS485 line to the terminals D+ and D-.
– Use twisted pair cable for RS485 connection. The length of the line should not ex-
ceed 1200 m.
4.1.1 Inputs
The following must be observed:
– All the AIx terminals are internally connected.
– The total resistance of the sensor output with connection lines must not exceed 100 ohm.
– When connecting, one must ensure that the permissible input voltage (see Table 2.1)
is not exceeded. If the voltage is within the permissible limits the input current will be
limited to 35 mA automatically.

Installation
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Fig. 4.1 Electrical connections
Table 4.1 Terminal assignments
No
Designation
Description
No
Designation
Description
1
0 V
Power supply
13
D-
RS485 D-
2
24 V
Power supply
14
D+
RS485 D+
3
free
15
free
4
free
16
free
5
AI1-
common negative
17
AI5-
common negative
6
AI1+
AI1+
18
AI5+
AI5+
7
AI2-
common negative
19
AI6-
common negative
8
AI2+
AI2+
20
AI6+
AI6+
9
AI3-
common negative
21
AI7-
common negative
10
AI3+
AI3+
22
AI7+
AI7+
11
AI4-
common negative
23
AI8-
common negative
12
AI4+
AI4+
24
AI8+
AI8+
When connecting current and voltage signals take into account an external additional
voltage source
Fig. 4.2 Connection of 2-wire sensors
Fig. 4.3 Connection of 3-wire sensors

Installation
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4.1.2 Different input signals
Each input can be configured for any type of signal individually. The signal type (sensor
type) must be selected for in-t parameter. A full list of configuration parameters is pre-
sented in Appendix B.
If a sensor has a positive output you can use a common additional voltage source. In
case of a negative output, a separate additional voltage source should be provided for
each sensor.