Teracom TCW241 Bedienungsanleitung
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TCW241_R4.17 –October 2022 Page 2
Ethernet I/O module TCW241
1. Introduction
TCW241 is an Ethernet IO module, the right choice for factory automation and distributed process
control. It has 4 digital inputs, 4 analog inputs and 4 relays with normally open and normally closed
contacts.
Ethernet I/O module supports up to eight Teracom 1-Wire sensors for temperature, humidity, CO2,
current, 4/20mA, galvanic isolated analog voltage etc.
The relays can be activated either remotely (WEB, SNMP, HTTP API, MODBUS/TCP, etc.) or locally –from
the status of a monitored parameter (1 Wire sensor, analog voltage, and dry contact).
An XML / JSON file with all monitored parameters can periodically upload on a dedicated server with
HTTP/HTTPS. Like answer server can return commands for relay's control. This is a way for building
SCADA system. For every parameter email and SNMP traps for up to 5 recipients can be sent. Alarm alert
also can be sent by HTTP/HTTPS Post with XML/JSON status files.
An embedded real-time clock provides scheduled time control of selected outputs: the tasks can be
either single or with weekly repetition.
2. Features
•10/100 Mb Ethernet connectivity;
•Auto-MDIX;
•Password protected, web-based configuration and control;
•4 digital "dry contact" inputs;
•4 analog inputs with 0 to 60VDC range;
•Multiplier and offset for analog inputs
•4 relays with NO and NC contacts;
•1-Wire interface for up to 8 temperature (TST1XX), temperature/humidity (TSH2xx) or
other Teracom sensors;
•SNMP v.2 support;
•SNMP traps and/or e-mail sending for alert conditions;
•SMTP with SSL/TLS security;
•TLS 1.0, TLS 1.1 and TLS 1.2 support;
•HTTP and SNMP port changing;
•HTTP API commands;
•Periodical HTTP/HTTPS Post of XML/JSON status files for client-server systems;
•MODBUS TCP/IP support;
•Dynamic DNS with DynDNS, No-IP and DNS-O-Matic support;
•NTP protocol support;
•Real-time clock for scheduled control;
•Extended working temperature range;
•Wide power supply voltage range;
•Remote firmware update.
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3. Applications
TCW241 is suitable for environmental monitoring and local control of an electrical and non-electrical
parameter, industrial and building automation, data acquisition systems, general remote control, and
monitoring.
It works very well as a standalone device that can be controlled using a web browser or as a part of small
and medium industrial control systems for SCADA (supervisory control and data acquisition).
A few example applications include:
•Temperature and humidity control in data centers;
•A building management system;
•Industrial cooling/heating control;
•Home automation;
•Alarm systems;
•Mushroom plant automation;
•Process monitor.
4. Specifications
•Physical characteristics
Dimensions: 145 x 90 x 40 mm
Weight: 230 g
•Environmental limits
Operating temperature range: -20 to 55°C
Storage temperature range: -25 to 60°C
Operating relative humidity range: 5 to 85% (non-condensing)
•Warranty
Warranty period: 3 years
•Power requirements
Input Voltage: 10 to 28 VDC
Input Current: 350 mA @ 12 VDC (with all relays ON)
•Digital inputs
Isolation: Non isolated
Mode: Dry contact
Maximum input voltage: +5.5VDC
Sampling rate: 10mS
Digital filtering time interval: 30mS
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•Analog inputs
Isolation: Non isolated
Type: Single ended
Resolution: 10 bits
Mode: Voltage
Input Range: 0 to 60 VDC
Accuracy: ±1%
Sampling Rate: 500mS per channel (averaged value of 250 samples)
Input Impedance: 1 mega-ohms (min.)
•Relay outputs
Type: Form C (N.O. and N.C. contacts)
Contact current rating: 3 A @ 24 VDC/30 VAC (resistive load)
Initial insulation resistance: 100 mega-ohms (min.) @ 500 VDC
Mechanical endurance: 10 000 000 operations
Electrical endurance: 100 000 operations @ 3 A resistive load
Contact resistance: 50 milli-ohms max. (initial value)
Minimum pulse output: 1 Hz at rated load
•1-Wire interface
Output voltage (+VW): 5.0 ± 0.3 VDC
Maximum output current (+VW): 0.2 A
•Internal FLASH memory
Endurance: 100 000 cycles (Every settings change is a memory cycle.)
5. LED indicators
The following indicators show the status of the controller:
•Relay1-Relay4 (green) –these LEDs are illuminated whenever the corresponding relay is
activated (the NO contact is closed and the NC contact is open);
•PWR (red) –in working mode shines, blinks together with STS if there is a hardware error;
•STS (yellow) –flashes when the main program of the controller is executed;
•NET (orange) –network status - ON when a link is established, blinks if there is an activity.
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6. Installation and setup
This device must be installed by qualified personnel.
This device must not be installed directly outdoors.
The Installation consists of mounting the device, connecting to an IP network, connecting inputs and
outputs, providing power and configuring via a web browser.
6.1. Mounting
TCW241 should be mounted in a clean and dry location on a not flammable surface. Ventilation is
recommended for installations where the ambient air temperature is expected to be high.
Mount the device to a wall by using two plastic dowels 8x60mm (example Würth GmbH 0912
802 002) and two dowel screws 6x70mm (example Würth GmbH 0157 06 70). Attach the screws to
the surface vertically. See Appendix-A, fig. 1 for mechanical details.
Maintain spacing from adjacent equipment. Allow 50 mm of space on all sides, as shown in fig. 2 in
Appendix A, this provides ventilation and electrical isolation
TCW241 can be mounted to a standard (35mm by 7.55mm) DIN rail. Attach the controller to the DIN
rail by hooking the hook on the back of the enclosure to the DIN rail and then snap the bottom hook
into place.
6.2. Connection
Attention! Disconnect power supply before wiring.
The correct wiring procedure is as follows:
•Make sure power is turned off;
•Make wiring connections to the terminals;
•Apply power.
It is recommended to test and configure TCW241 without any controlled device. In this case,
unexpected turn on will be avoided.
Make sure that the wires are properly attached to the terminals and that the terminals are tightened.
Not the proper wiring and configuration can cause permanent damage to TCW241 or the equipment
to which it is connected or both.
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Connector 1 Ethernet - RJ45 Connector 6 Pin1 –GND (most left)
Connector 2 Power - 2.1x5.5mm connector, Pin2 –GND
central positive
Connector 3 Pin1 –Power positive Pin3 –1-Wire Data
Pin2 –Power negative Pin4 –1-Wire GND
Connector 4 Pin1 –NC Relay4 Pin5 –1-Wire +VDD
Pin2 –COM Relay4 Pin6 –1-Wire +VDD (most right)
Pin3 –NO Relay4 Connector 7 Pin1 –Digital In 1
Pin4 –NC Relay3 Pin2 –GND
Pin5 –COM Relay3 Pin3 –Digital In 2
Pin6 –NO Relay3 Pin4 –Digital In 3
Pin7 –NC Relay2 Pin5 –GND
Pin8 –COM Relay2 Pin6 –Digital In 4
Pin9 –NO Relay2 Connector 8 Pin1–Analog In 1
Pin10 –NC Relay1 Pin2 –GND
Pin11 –COM Relay1 Pin3 –Analog In 2
Pin12 –NO Relay1 Pin4 –Analog In 3
Connector 5 Pin1 –1-Wire GND Pin5 –GND
Pin2 –1-Wire Data Pin6 –Analog In 4
Pin3 –1-Wire +VDD
6.2.1. Power supply connection
TCW241 is designed to be supplied by adapter SYS1421-0612-W2E or similar, intended for use in
the conditions of overvoltage category II, and prior assessed for compliance with safety
requirements. The power supply equipment shall be resistant to short circuit and overload in a
secondary circuit.
When in use, do not position the equipment so that it is difficult to disconnect the device from the
power supply.
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6.2.2. Digital inputs connection
Attention! Digital inputs are NOT galvanic isolated.
The digital inputs of TCW241 can be used for monitoring of devices with “dry contact” outputs –
door contact switch, push button, PIR detector etc.
The following picture illustrates how a dry contact switch can be connected to the input of
TCW241. One side of the contact is connected to “Digital In” and another side is connected to
“GND” terminals.
The maximum cable length should be up to 30 meters.
6.2.3. Analog inputs connection
Attention! Analog inputs are NOT galvanic isolated.
Analog inputs of TCW241 can be used for monitoring of DC voltage up to 60VDC. They can be
connected directly to batteries, solar panels, power supplies etc.
Built-in functionality “Multiplier”, “Offset” and “Dimension” for every analog input gives a
possibility to monitor sensors with analog outputs and see directly a measured parameter. It is
also possible to monitor voltages bigger than 60 VDC with external resistive dividers.
The following picture illustrates how a battery can be connected to the analog input of TCW241.
The positive terminal is connected to “Analog In” and the negative terminal to “GND”.
The maximum cable length should be up to 30 meters.
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6.2.4. Sensor connection
Up to eight 1-Wire sensors can be connected to TCW241. The device supports following sensors -
temperature, temperature/humidity, CO2, DC current, AC current, 4/20mA, galvanic isolated
analog voltage, barometric pressure etc. Connected sensors are automatically detected and
appropriate dimension is assigned.
1-Wire is a registered trademark of Maxim Integrated Products, Inc. It is designed to connect
several sensors over a short wiring. It is not suitable for long distances or environments with EMC
interference. We recommend reading Maxim’s 1-Wire tips at http://www.maxim-ic.com/app-
notes/index.mvp/id/148.
The sensors have three wires –positive voltage (+VDD), ground (GND) and bidirectional data
(Data). The colors of wires for every sensor are specified in its user manual.
It is strongly recommended to use “daisy-chained” (linear topology) for multiple sensors:
“Star” topology can be used only as a last resort for up to 4 sensors and total cable length up to 10
meters:
Connections can be realized either by screw terminal connector or by a standard RJ-11
connector.
There are many parameters which determine the maximum length of the wires –the type of
cable, the number of sensors, ambient electromagnetic noise and sensor network topology.
TCW241_R4.17 –October 2022 Page 9
It is strongly recommended to use only UTP/FTP cables and keep total cable length up to 30 m.
Although functionality has been achieved on longer distance, we cannot guarantee error-free
operation over mentioned wiring length.
We guarantee proper operation only with Teracom 1-Wire sensors.
6.2.5. Relay connection
The relay contacts are internally connected directly to the terminal connectors. For all relays normally open,
normally closed and common contacts are available.
For loads with higher switchable current/voltage than specified, an external relay should be used.
When mechanical relays switch inductive loads such as motors, transformers, relays, etc., the
current will arc across the relay contacts each time the contacts open. Over time, this cause wears
on the relay contacts which shorten their life. When switching an inductive load, it is
recommended that relay contact protection devices are used.
TCW241_R4.17 –October 2022 Page 10
6.2.6. Network connection
The Ethernet port of TCW241 should be connected to 10/100 Base-T Ethernet hub, switch or
router.
For configuration, TCW241 may be connected directly to the Ethernet port on a computer. The
device support Auto-MDIX and it is not necessary to use “crossover” cable, standard “straight-
through” can be also used.
TCW241 can be used in a wireless network by connecting through a wireless router.
6.3. Communication setup
By default TCW241 is delivered with the following network settings:
IP address: 192.168.1.2, Subnet Mask: 255.255.255.0, Default Gateway: 192.168.1.1
Communication with TCW241 can be established by assigning a temporary IP address to the
computer. For computers with Windows OS assigning of IP address is made in “Local area
connection properties”:
Andere Handbücher für TCW241
1
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