NOVUS DigiRail-2A - Manual

NOVUS AUTOMATION 1/2
DigiRail-2A
Universal Analog Input Modules
INSTRUCTION MANUAL
INTRODUCTION
The Universal Analog Input Modbus Module - DigiRail-2A is a
remote measuring unit with two configurable analog inputs. An
RS485 serial interface allows reading and configuration of these
inputs, through communication network. It's appropriate for
mounting on DIN 35 mm rails.
The inputs are electrically insulated from the serial interface and the
module supply. There is no electrical insulation between inputs.
There is also no electrical insulation between serial interface and
supply.
Configuration of the DigiRail-2A is performed through the RS485
interface by using Modbus RTU commands. The DigiConfig
software allows the configuration of all features of the DigiRail as
well as its diagnostics. The DigiConfig offers features for detecting
the devices present in the Modbus network and for configuring the
communication parameters of the DigiRail-2A.
This manual provides the instructions for installation and connection
of the module. The installer for DigiConfig and the documentation
regarding
Modbus communication for the DigiRail-2A
(Communication Manual of the DigiRail-2A) are included in the CD-
ROM which accompanies the product. They are also available for
download at
www.novusautomation.com .
ELECTRICAL INSTALLATION
RECOMMENDATIONS FOR INSTALLATION
•
Input and communication signal conductors must pass through
the system plant separated from the electrical network
conductors, if possible, in grounded conduits.
•
The supply for the instruments must be provided from a proper
network for instrumentation.
•
In control and monitoring applications, it is essential considering
what may occur if any of the system parts should fail.
•
We recommend the use of RC FILTERS (47Ω and 100nF,
series) in parallel with contactor and solenoid coils which are
close or connected to DigiRail.
ELECTRICAL CONNECTIONS
Figure 1 shows the necessary electrical connections. The terminals
1, 2, 3, 7, 8 and 9 are intended for the input connections, 5 and 6 for
the module supply and 10, 11 and 12 for the digital communication.
For obtaining a better electrical contact with the connectors, we
recommend the use of pin terminals at the conductors' end. For
direct wire connection, the minimum gage recommended is 0.14
mm², not exceeding 4.00 mm².
Be careful when connecting the supply terminals to
the DigiRail. If the positive conductor of the supply
source is connected, even momentarily, to one of the
communication connection terminals, the module
may be damaged.
Figure 1 – Electrical Connections
CONNECTIONS – INPUT 0-5 VDC / 0-10 VDC
For using the 0-5 Vdc and 0-10 Vdc input types, the user must
beforehand switch the position of the inner module jumpers. To this
end, the module must be opened and jumpers J1 and J2 (input 1
and input 2, respectively) must be changed due to the following
options:
•
For 0-5 Vdc and 0-10 Vdc input types, positions 1 and 2 must
be strapped.
•
For all other input types, positions 2 and 3 must be strapped
(factory position).
Figure 2 – Jumper for 0-5 Vdc and 0-10 Vdc input
CONFIGURATION
The user will receive the module perfectly calibrated, no adjustment
will be required. The original configuration features the following
characteristics:
Sensor thermocouple wire J, Indication ºC, Filter = 0
Address=247, BaudRate=1200, Parity Even,
1 Stop Bit
The application DigiConfig is a program for Windows® used for
configuration of the modules DigiRail. For its installation, run the
DigiConfigSetup.exe file from the CD-ROM of the product and
follow the instructions as shown.
DigiConfig is provided with a complete help file, giving all the
information necessary for its full use. For using the help feature,
start the application and chose the "Help" menu or press the F1 key.
If you do not have the CD-ROM which comes together with the
product, go to
www.novusautomation.com in order to obtain the
installer for DigiConfig and the additional product manuals.