Akytec TRM138 User manual

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] ·www.akytec.de
TRM138
8-channel on-off controller
User guide
TRM138_2016.12_0218_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 Functions...................................................................................................................................................3
1.2 RS485 network..........................................................................................................................................3
1.3 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
4.3 Wiring........................................................................................................................................................8
4.4 Inputs.........................................................................................................................................................9
4.4.1 Current / voltage signals..................................................................................................................10
4.4.2 Resistance thermometer (RTD).......................................................................................................11
4.4.3 Thermocouples (TC)........................................................................................................................11
4.5 Outputs....................................................................................................................................................11
4.5.1 Relay outputs (R).............................................................................................................................11
4.5.2 NPN transistor (T)............................................................................................................................11
4.5.3 Solid state relay (S)..........................................................................................................................12
4.5.4 Analog 4-20 mA (I)...........................................................................................................................12
4.5.5 Analog 0-10 V (U)............................................................................................................................13
5Control elements..........................................................................................................................................14
6Operation.......................................................................................................................................................16
6.1 Block diagram..........................................................................................................................................16
6.2 Input sampling.........................................................................................................................................16
6.3 Cold junction compensation....................................................................................................................16
6.4 Linear scaling..........................................................................................................................................16
6.5 Digital Filter .............................................................................................................................................17
6.6 Correction................................................................................................................................................17
6.7 Logic unit.................................................................................................................................................18
6.7.1 Comparator mode............................................................................................................................18
6.7.2 Retransmission mode......................................................................................................................20
6.8 Calibration...............................................................................................................................................21
6.9 Modbus communication..........................................................................................................................21
7Control mode................................................................................................................................................22
7.1 Alarm.......................................................................................................................................................22
7.1.1 Sensor error.....................................................................................................................................22

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
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7.1.2 Loop Break Alarm (LBA)..................................................................................................................22
7.1.3 Alarm handling.................................................................................................................................23
7.1.4 Alarm output.....................................................................................................................................23
7.1.5 Warning indication ...........................................................................................................................23
8Configuration................................................................................................................................................24
9TRM138 Configurator...................................................................................................................................28
10 Maintenance..................................................................................................................................................29
11 Transportation and storage.........................................................................................................................30
12 Scope of delivery..........................................................................................................................................31
Appendix A Dimensions ...................................................................................................................................32
Appendix B Configuration parameters............................................................................................................33
Appendix C Modbus addressing......................................................................................................................38

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 8-channel on-off controller TRM138 (hereinafter
referred to as TRM138, device, or controller).
1.1 Functions
The 8-channel on-off controller TRM138 is intended for automatic control systems in vari-
ous technological processes in different areas of industry, agriculture and utilities.
The controller provides following basic functions:
measuring of input values and transformation of the input signal according to the
sensor type
displaying the measured values and configuration parameters on 4-digit LED dis-
plays
digital filtering of the input signal (EMI-interference protection)
signal correction
creating an alarm signal in case of sensor failure, displaying the cause of the fail-
ure, using the outputs for alarm signals
creating control signals for actuating devices according to configuration parame-
ters
manual control, creating control signals using the function keys
full control over PC using RS485 interface
operating with akYtec, Modbus-RTU and Modbus-ASCII protocols in a Slave
mode
saving the set programmable parameters to non-volatile memory in case of pow-
er outage
configuration via PC or using the function keys.
1.2 RS485 network
The TRM138 uses the common standard RS485 for data exchange.
Serial interface RS485 enables communication via two-wired line in half-duplex mode.
The module supports the Modbus RTU, Modbus ASCII and akYtec protocols with auto-
matic protocol detection.
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 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 2 ends of the bus (the first and the last node).
The higher the data transmission rate, the stronger they are. A terminating resistor is
needed to minimize reflections. Line termination may be a 150 ohms value (0.5 W) resis-
tor.
The TRM138 can be used as a Slave device only. Master device can be PLC, computer
with SCADA software or control panel.

Overview
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1.3 Ordering information
The TRM138 can be ordered in different variants depending on the required output type:
Output type (1…8):
R Relay
I 4-20 mA
S Solid state relay
T NPN transistor
U 0-10 V (outputs 5…8 only)
Various types of outputs should be indicated in the order key only in the certain sequence:
I -> S -> T -> R -> U
Example:
TRM138-H7.UUIISSTR
incorrect
TRM138-H7.IISTRRUU
Correct
TRM138-H7.RRRRRRRR
Correct

Specifications
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2 Specifications
Table 2.1 General specifications
Power supply
230 (90…264) V AC, (47…63 Hz)
Power consumption, max.
18 VA
Analog Inputs
8
Optional outputs
8
Sampling time (per input), max.
0.6 s
Integrated voltage source
24±3 V DC, 150 mA
RS485 interface
Terminals
D+, D-
Protocols
Modbus RTU/ASCII, akYtec
Baud rate
2.4…115.2 kbit/s
Dimensions
H7
169 x 144 x 50.5 mm
Weight
approx. 450 g
Table 2.2 Standard input signals
Signal type
Measurement range (%)
Accuracy, %
0-1 V
0…100
±0.25
-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
53M
-50…+200
0.00426
Cu50
-50…+200
0.00426
100P
-200...+750
0.00391
100M
-190…+200
0.00428
Cu100
-50…+200
0.00426
TC according to IEC 60584-1:2013
J
-200…+1200
-
±0.5
(±0.25)*
N
-200…+1300
-
К
-200…+1300
-
S
0…+1750
-
R
0…+1750
-
A
0…+2500
-
TC according to GOST 8.585
L
-200…+800
-
±0.5
(±0.25)*
*with disabled cold junction compensation

Specifications
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Table 2.4 Output types
Ordering
code
Output type
Loading capacity
R
Relay
4 A / 250 V AC
4 A / 30 V DC
T
NPN transistor
400 mA, 60 V DC
S
Solid state relay
50 mA, 4…6 V DC
I
Analog 4-20 mA
10…30 V, max. 1.3 kohm
U
Analog 0-10 V
15…30 V, min 2 kohm
2.1 Environmental conditions
The device is designed for natural convection cooling. It 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…+60°C
Relative humidity
up to 80% (at +25°C, non-condensing)
IP Code
IP54 front
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 oth-
erwise 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 sub-
stance.

Installation
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4 Installation
CAUTION
Improper installation
Improper installation can cause serious or minor injuries and damage the control
panel. Installation must be performed only by fully qualified personnel.
The device is designed in a plastic enclosure for panel mounting. For the dimension
drawings see Appendix A.
4.1 Requirements
Install the device in a cabinet with clean, dry and controlled environment. For fur-
ther details see 2.1.
The module is designed for natural convection cooling. It should be taken into ac-
count when choosing the installation site.
The seal contact surface must be clean and smooth, so that the protection IP54
can be provided.
The device can be placed at any angle.
4.2 Mounting
prepare the mounting cutout according to Fig. A.1
make sure that the device is provided with the mounting seal
fit the device into the cutout
insert the 4 fastening clips into the slots on the top and the bottom of the device
insert the screws and tighten them to fix the device
4.3 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.
The layout of the terminal blocks is shown in Fig. 4.1 and the terminal assign-
ments in Table 4.1.
Ensure that the device is provided with its own power supply line and electric fuse
I = 1 A.
Connect the power supply to the terminals L / N.
The inputs should be wired in accordance with Fig. 4.2...4.8.
The outputs should be wired in accordance with Fig. 4.9...4.17.
The maximum conductor cross-section is 1.5 mm².
Disabled inputs (parameter „Sensor type“ = OFF) should be short-circuited ac-
cording to Fig. 4.7.
►
NOTICE
Signal cables should be routed separately or screened from the supply cables.
Only a shielded cable may be used for signal lines.

Installation
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►
NOTICE
The integrated voltage source 24 V DC can be used for inputs or outputs, but not
for both groups.
Connect the RS485 lines to terminals D+ and D-.
For the connection to RS485 interface twisted pair cable should be used. Maxi-
mal cable length is 1200 m.
Fig. 4.1 Layout of terminal blocks
Table 4.1 Terminal assignment
Terminal
Signal
Terminal
Signal
Terminal
Signal
1
Output 1-3 (–)
19
Output 8-2 (+)
37
Input 4-3
2
Output 1-2 (+)
20
Output 8-1
38
Input 3-3
3
Output 2-3 (–)
21
not connected
39
Input 4-2
4
Output 2-2 (+)
22
not connected
40
Input 3-2
5
Output 3-3 (–)
23
Power supply (N)
41
Input 4-1
6
Output 3-2 (+)
24
Power supply (L)
42
Input 3-1
7
Output 4-3 (–)
25
Input 8-3
43
Input 2-3
8
Output 4-2 (+)
26
Input 7-3
44
Input 1-3
9
Output 5-3 (–)
27
Input 8-2
45
Input 2-2
10
Output 5-2 (+)
28
Input 7-2
46
Input 1-2
11
Output 5-1
29
Input 8-1
47
Input 2-1
12
Output 6-3 (–)
30
Input 7-1
48
Input 1-1
13
Output 6-2 (+)
31
Input 6-3
49
RS485 D+
14
Output 6-1
32
Input 5-3
50
RS485 D-
15
Output 7-3 (–)
33
Input 6-2
51
–24 V voltage source
16
Output 7-2 (+)
34
Input 5-2
52
+24 V voltage source
17
Output 7-1
35
Input 6-1
18
Output 8-3 (–)
36
Input 5-1
4.4 Inputs
Supported signals (see Table 2.2 and 2.3):
Standard signal 4-20 mA / 0-1 V
Thermocouple (TC)
Resistance thermometer (RTD)