EVCO EVD120 User Manual
Summary
Important
Introduction
Getting started
1 Getting started .....................................................................................................................................................9
1.1 Installing the instrument ..................................................................................................................................... 9
1.2 Wiring diagram ................................................................................................................................................. 10
3EVD120
Summary
[ EVD120 ]
Important ............................................................................................................................................................. 5
Introduction ......................................................................................................................................................... 7
Programming
2 Programming ..................................................................................................................................................... 11
2.1 Preliminary remarks .......................................................................................................................................... 11
2.2 Programming an EVD120 having standard network parameters using the software RICS
(adding an EVD120 having standard network parameters to an existing and working network of
instruments managed by RICS) ........................................................................................................................ 11
2.3 Programming an EVD120 having standard network parameters using the software Params Manager .......... 12
2.4 Restoring well-known network parameters of EVD120 temporarily using the programming key
EVKEY (in order to change them using the software Params Manager) .........................................................13
2.5 Learning/Programming the instrument address of EVD120 using the programming key EVKEY ................ 13
2.5.1 Learning the instrument address of EVD120 using the programming key EVKEY ....................................... 13
2.5.2 Programming the instrument address of EVD120 using the programming key EVKEY ................................ 15
2.6 Copying the configuration parameters of EVD120 in the programming key EVKEY using the software
Params Manager ................................................................................................................................................ 16
2.6.1 Copying the configuration parameters of EVD120 in the programming key EVKEY using the software
Params Manager (in order to program several EVD120 that are different of the instrument address) ........... 16
2.7 Reading the configuration parameters of EVD120 from the programming key EVKEY ............................... 17
Configuration parameters
3 Configuration parameters ................................................................................................................................. 19
3.1 Preliminary remarks ..........................................................................................................................................19
3.2 Configuration parameters ................................................................................................................................. 19
Signals
4 Signals ............................................................................................................................................................... 23
4.1 LED Power/Status ............................................................................................................................................. 23
4.2 LED Communication (on port 1) ...................................................................................................................... 23
4.3 LED Prog ...........................................................................................................................................................24
Technical data
5 Technical data ...................................................................................................................................................25
5.1 Technical data ...................................................................................................................................................25
Important
Important
Read these instructions carefully before installing and using the instrument and follow all additional information for
installation and electrical connection; keep these instructions close to the instrument for future consultations.
The instrument must be disposed according to the local legislation about the collection for electrical and electronic
equipment.
5EVD120
Important
[ EVD120 ]
Introduction
[ EVD120 ]
Introduction
EVD120 is a two analog channels and two digital inputs acquisition module.
Each analog channel can work with one of the following kind of probe (universal analog channels):
• PTC/NTC probe
• J/K thermocouple
• 2/3 wires Pt 100 and Pt 1000 probe
• 2/3 wires 4-20 mA passive current transducer
• 0-10/2-10 V and 0-20/4-20 mA active transducer.
The instrument has the following communication ports:
• RS-485 port with MODBUS communication protocol, to allow the connection of the instrument in RS-485 net-
works with MODBUS communication protocol
• serial port for the communication with the programming key EVKEY.
The case of EVD120 is 3 DIN modules.
7EVD120
Introduction
Getting started
[ EVD120 ]
1 Getting started
1.1 Installing the instrument
On DIN rail; dimensions in mm (in).
9EVD120
Getting started
Fig. 1 - Dimensions of EVD120.
Fig. 2 - Installation of EVD120.
Additional information for installation:
• working conditions (working temperature, humidity, etc.) must be between the limits related in the technical data
• do not install the instrument close to heating sources (heaters, hot air ducts, etc.), devices provided with big magne-
tos (big speakers, etc.), locations subject to direct sunlight, rain, humidity, dust, mechanical vibrations or bumps
• according to the safety legislation, the protection against electrical parts must be ensured by a correct installation of
the instrument; the parts that ensure the protection must be installed so that you can not remove them if not by using
a tool.
10
EVD120
Getting started
1.2 Wiring diagram
Fig. 3 - Wiring diagram of EVD120.
With reference to the wiring diagram:
• port 1 is the port for the serial communication (via RS-485, with MODBUS communication protocol)
• port 2 is the serial port for the communication with the programming key.
Additional information for electrical connection:
• do not operate on the terminal blocks with electrical or pneumatic screwers
• if the instrument has been moved from a cold location to a warm one, the humidity could condense on the inside;
wait about an hour before supplying it
• test the working power supply voltage, working electrical frequency and working electrical power of the instrument;
they must correspond with the local power supply
• disconnect the local power supply before servicing the instrument
• provide the probes with a protection able to protect them against contacts with metal parts or use insulated probes
• do not use the instrument as safety device
• for repairs and information on the instrument please contact Evco sales network.
Programming
[ EVD120 ]
2 Programming
2.1 Preliminary remarks
EVD120 supports the MODBUS communication protocol.
The kind of network EVD120 can work in is RS-485 (look at Fig. 4); for further information on the realization of the
network, consult the Installation manual of RICS for Windows® (the document is available in the CD of RICS).
According to the standard settings:
• the instrument address has value 247
• the baud rate has value 9,600 baud
• the parity has value even.
These parameters are hereinafter called “network parameters”.
11EVD120
Programming
(1) use a twisted pair
(2) pair, as far as possible, the ca-
ble to the ones you have already con-
nected
2.2 Programming an EVD120 having standard network parameters using the software RICS (adding an EVD120 having standard network parameters to an
existing and working network of instruments managed by RICS)
Operate as follows:
• make sure the network is made of instruments that support the MODBUS communication protocol; to learn the
communication protocol supported by the instruments, consult the List of compatible instruments and supported
communication protocol (the document is available in the internet site www.evco.it)
• make sure the network is made of less than 32 instruments
• make sure no instrument in the network has value 247 as instrument address; to learn the instrument address,
consult the instructions (the document is available in the internet site www.evco.it)
• make sure the baud rate of the instruments in the network has value 9,600 baud; to learn the baud rate of the
instrument, consult the instructions (the document is available in the internet site www.evco.it)
• make sure the parity of the instruments in the network has value even; to learn the parity of the instrument, consult
the instructions (the document is available in the internet site www.evco.it)
• quit RICS
• disconnect the power supply of the instruments in the network
• connect terminal “ + ” of the hardware driver of the last instrument in the network to terminal “ 1 ” of EVD120
• connect terminal “ -- ” of the hardware driver of the last instrument in the network to terminal “ 2 ” of EVD120
• connect terminal “ S ” of the hardware driver of the last instrument in the network to terminal “ 3 ” of EVD120
• to reduce the reflections on the signal transmitted through the cable, plug in the termination of the first and last
element of the network
(1)
(1)
(2)
Fig. 4 - Example of RS-485 network.
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