Akytec TRM202 User manual

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] ·www.akytec.de
TRM202
2-channel controller
User guide
TRM202_2017.04_0239_EN
© All rights reserved
Subject to technical changes and misprints

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
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Contents
1Overview..........................................................................................................................................................3
1.1 Documentation ..........................................................................................................................................3
1.2 Functions...................................................................................................................................................3
1.3 RS485 network..........................................................................................................................................3
1.4 Ordering information .................................................................................................................................4
2Specifications .................................................................................................................................................5
2.1 Environmental conditions ..........................................................................................................................6
3Safety...............................................................................................................................................................7
3.1 Intended use..............................................................................................................................................7
4Installation.......................................................................................................................................................8
4.1 Requirements ............................................................................................................................................8
4.2 Mounting....................................................................................................................................................8
5Wiring ..............................................................................................................................................................9
5.1 General......................................................................................................................................................9
5.2 Inputs.......................................................................................................................................................10
5.2.1 Linear signals...................................................................................................................................10
5.3 Outputs....................................................................................................................................................11
5.3.1 Relay output (R)...............................................................................................................................11
5.3.2 NPN transistor (T) ............................................................................................................................11
5.3.3TRIAC (C) ........................................................................................................................................11
5.3.4 Solid state relay (S)..........................................................................................................................12
5.3.5 Analog 4-20 mA (I)...........................................................................................................................12
5.3.6Analog 0-10 V (U) ............................................................................................................................12
6Operation.......................................................................................................................................................14
6.1 Control elements .....................................................................................................................................14
6.2 Principle of operation ..............................................................................................................................15
6.3 First start up ............................................................................................................................................15
7Configuration ................................................................................................................................................17
7.1 Temperature sensor................................................................................................................................17
7.2 Linear signal............................................................................................................................................17
7.2.1 Square root function.........................................................................................................................18
7.3Correction................................................................................................................................................18
7.4 Filter ........................................................................................................................................................19
7.5 Control Unit .............................................................................................................................................20
7.6 Setpoint limits ..........................................................................................................................................20
7.7 Digital output ...........................................................................................................................................20
7.8 Analog output ..........................................................................................................................................22
7.8.1 P control...........................................................................................................................................22

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
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7.8.2 Signal retransmission.......................................................................................................................23
7.8.3 Output safe state..............................................................................................................................23
7.9 Display settings .......................................................................................................................................23
7.10 RS485 network settings.......................................................................................................................23
7.11 Access protection ................................................................................................................................24
7.12 Factory settings ...................................................................................................................................24
7.13 Calibration............................................................................................................................................24
8Control modes ..............................................................................................................................................25
8.1 General....................................................................................................................................................25
8.2 Automatic control.....................................................................................................................................25
8.3 Control over Network ..............................................................................................................................25
8.4 Errors.......................................................................................................................................................26
9Maintenance..................................................................................................................................................27
10 Transportation and storage.........................................................................................................................28
11 Scope of delivery..........................................................................................................................................29
Appendix A Dimensions ...................................................................................................................................30
Appendix B Configuration parameters............................................................................................................31
Appendix C Modbus access.............................................................................................................................36
Appendix D Error causes and remedies .........................................................................................................40

Overview
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: [phone] · www.akytec.de
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1 Overview
This guide describes the functions, system configuration, operating instructions, pro-
gramming and troubleshooting of the 2-channel controller TRM202 (hereinafter referred
to as TRM202, device, or controller).
1.1 Documentation
Data sheet (PDF document to download)
Data sheet contains general information, ordering information and the technical data
needed for purchase decision.
Short guide (PDF document to download / printed document in the box)
Short guide contains the most important information about installation, wiring, configura-
tion and operation of the device.
User guide (PDF document to download)
User guide contains the complete information about the device.
Modbus access (PDF document to download / printed document in the box)
The document contains the information about the Modbus functions and the Modbus
register allocation of the device.
All PDF documents can be downloaded from www.akytec.de.
1.2 Functions
The 2-channel controller TRM202 is designed for creating automatic control and regula-
tion systems of various technological processes in different areas of industry, agriculture
and utilities.
The controller provides following basic functions:
– measuring of the process value and its transformation according to the sensor type
– displaying the process values and configuration parameters on two 4-digit LED dis-
plays
– scaling and filtering of input signal
– signal correction, square root function
– calculation of the difference between two signals
– independent ON/OFF control of two process variables or three-step control of one
process variable
– automatic control
– network control (RS485 interface) with akYtec, Modbus-RTU and Modbus-ASCII
protocols as a Slave
– signal retransmission using analog output 4-20 mA or 0-10 V
– alarm output
– sensor / input error detection
– error indication
– configuration via the functional keys
1.3 RS485 network
The TRM202 uses the common standard RS485 for data exchange.
Serial interface RS485 enables communication via two-wired line in half-duplex mode.
The device supports the Modbus RTU, Modbus ASCII and akYtec protocols with auto-
matic protocol detection.

Overview
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: [phone] · www.akytec.de
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The network consists of a Master device and can contain up to 32 Slave devices. Maxi-
mum length is 1200 m. The number of Slave devices and network length can be in-
creased by using RS485 interface repeater.
Devices are connected to a network 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 connection and spur lines are not allowed.
Line reflections always occur at each of the two ends of the bus (the first and the last
node). The higher the data transmission rate, the stronger the reflections are. A terminat-
ing resistor is needed to minimize reflections. 150 ohm (0.5 W) resistor can be used as a
line termination.
The TRM202 can only be used as a Slave device. PLC, computer with SCADA software
or device can be used as a Master device. To connect TRM202 to PC the interface con-
verter IC4 from akYtec can be used.
To establish the communication via Modbus see sections 7.10, 8.3.
1.4 Ordering information
The TRM202 can be ordered in different variants depending on the required housing and
output type.
Housing:
H1 - panel mount (96 x 96 x 70 mm)
H2 - panel mount (96 x 48 x 100 mm)
H3 - wall mount (105 x 130 x 65 mm)
Outputs:
R - Relay *
T - NPN transistor *
C - TRIAC *
S - Solid state relay *
I - 4-20 mA
U - 0-10 V
* For three-step control the device should be equipped with two digital outputs.

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
230 (90…245) V AC, 50 (47…63) Hz
Power consumption, max.
6 VA
Analog inputs
2
Input resistance
4
-20 mA
external resistor R
IN
= 100 ohm
(in parallel)
0-1 V
≥ 100 kohm
Optional output
2
Sampling rate, max.
1 s
RS485 interface
Terminals
D+, D-
Protocols
Modbus RTU/ASCII, akYtec
Baud rate
2.4…115.2 kbit/s
Cable
Shielded twisted pair (STP)
Enclosure
H1
H2
H3
Dimension, mm
96 x 96 x 70
96 x 48 x 100
105 x 130 x 65
IP Code
front IP54
front IP54
IP44
Table 2.2 Linear signals
Signal type Measurement range, % Accuracy, %
0-1 V
0…100
±0.5
-50…+50 mV
0…100
0-5 mA
0…100
0-20 mA
0…100
4-20 mA
0…100
Table 2.3 Temperature sensors
Signal type Measurement range, °C
Temperature
coefficient, °C
-1
Accuracy, %
RTD according to IEC 60751:2008
Pt50
-200…+750
0.00385 ±0.25
Pt100
-200…+750
RTD according to GOST 6651
50P
-200...+750
0.00391
±0.25
50M
-190…+200
0.00428
Cu50
-50…+200
0.00426
100P
-200...+750
0.00391
100M
-190…+200
0.00428
Cu100
-50…+200
0.00426
53M
-50…+200
0.00426
46P
-200…+750
0.00391
TC according to IEC 60584-1:2013
J
-200…+1200
-
±0.5
N
-200…+1300
-
К
-200…+1300
-
S
0…+1750
-
R
0…+1750
-
A
0…+2500
-
T
-200…+400
-
B
+200…+1800
TC according to GOST 8.585
L
-200…+800
-
±0.5
A-2
0…+1800
-
A-3
0…+1800
-

Specifications
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: [phone] · www.akytec.de
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Table 2.4 Optional outputs
Ordering
code
Output type Loading capacity
R
Relay
8 A / 230 V AC, cos φ≥ 0.4/ 30 V DC
T
NPN transistor
200 mA, 40 V DC
C TRIAC
50 mA, 240 V AC (constant operation)
500 mA (f ≤50 Hz, pulse duration ≤ 5 ms)
S Solid state relay 100 mA, 4…6 V DC
I
4-20 mA
10…36 V, max. 1 kohm
U
0-10 V
15…36 V, min. 2 kohm
2.1 Environmental conditions
The device is designed for natural convection cooling that should be taken into account
when choosing the installation site.
The following environment conditions must be met:
−clean, dry and controlled environment, low dust level
−closed non-hazardous areas, free of corrosive or flammable gases
Table 2.5
Conditions Permissible range
Ambient temperature
+1…+50°C
Storage temperature
-25…+55°C
Relative humidity
up to 80% (at +35°C, non-condensing)
Altitude
up to 2000 m above sea level

Safety
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: [phone] · www.akytec.de
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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
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: [phone] · www.akytec.de
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4 Installation
CAUTION
Improper installation
Improper installation can cause serious or minor injuries and damage the device.
Installation must be performed only by fully qualified personnel.
The device is designed in a plastic enclosure for panel or wall mounting. For the dimen-
sion drawings see Appendix A.
4.1 Requirements
– Install the device in a cabinet with clean, dry and controlled environment. For further
details see 2.1.
– The device is designed for natural convection cooling that should be taken into ac-
count when choosing the installation site.
– The seal contact surface must be clean and smooth, so that the IP54 protection (for
H1 and H2) can be provided.
– The device can be placed at any angle.
– Maximum panel thickness is 15 mm
4.2 Mounting
Mounting procedure for panel mount (H1 or H2 housing):
– prepare the mounting cutout for H1 (Fig. A.1) or H2 (Fig.
A.2 and Fig. 4.1) housing
– make sure that the device is provided with the mounting
seal
– fit the device into the cutout
– insert the 2 fastening clips into the slots on the sides of
the device
– insert the screws and tighten them to fix the device
Mounting procedure for wall mount (H3):
– prepare three drilled holes according to Fig. A.3
– fix the triangle mounting bracket to the wall using three
М4x20 screws (not included) (see Fig. А.3 and Fig. 4.2a)
– hook the angle bracket on the back of the device on the
upper edge of the triangle bracket (Fig. 4.2b)
– fix the device to the triangle bracket with the screw sup-
plied (Fig. 4.2c)
Fig. 4.1 Panel mount
a)
b)
c)
Fig. 4.2 Wall mount

Wiring
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: [phone] · www.akytec.de
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5 Wiring
DANGER
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.
WARNING Switch on the power supply only after wiring of the device has been completed.
WARNING
Terminals 1…8 for connecting power supply and outputs are designed for a max-
imum voltage of 250 V. Don’t apply voltage above 250 V to the terminals 1...8 to
avoid an insulation breakdown or flashover. Different phases are not allowed.
5.1 General
– The layout of terminal blocks is shown in Fig. 5.1 and the terminal assignments in
Table 5.1
– Ensure that the device is provided with its own power supply line and electric fuse I =
0.5 A
– Connect the power supply to the terminals L / N
– The inputs should be wired in accordance with Fig. 5.2...5.3
– The outputs should be wired in accordance with Fig. 5.4...5.10
– The maximum conductor cross-section is 1.5 mm²
►
NOTICE
Signal cables should be routed separately or screened from the supply cables.
Only a shielded cable may be used for signal lines.
– Connect the RS485 lines to terminals D+ and D-.
– Twisted pair cable should be used for the connection to RS485 interface. Maximal
cable length is 1200 m.
Fig. 5.1 Terminal block layout
230 V AC
OUTPUT 1 OUTPUT 2
t C
RTD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
RS485
D+ D-
TC
VOLTAGE
CURRENT
INPUT 1 INPUT 2
t C