User guide

N1100 Controller
NOVUS AUTOMATION 4/11
USB INTERFACE
The USB interface is used for CONFIGURING or MONITORING the
controller. The NConfig software must be used for the configuration.
It makes it possible to create, view, save and open configurations
from the equipment or files in your computer. The tool for saving and
opening configurations in files makes it possible to transfer
configurations between pieces of equipment and to make backup
copies. For specific models, the NConfig software also makes it
possible to update the firmware (internal software) of the controller
through the USB.
For MONITORING purposes you can use any supervisory software
(SCADA) or laboratory software that supports the MODBUS RTU
communication on a serial communications port. When connected to
the USB of a computer, the controller is recognized as a conventional
serial port (COM x). Use the NConfig software or consult the
DEVICE MANAGER in the Windows CONTROL PANEL to identify
the COM port that was assigned to the controller. Consult the
mapping of the MODBUS memory in the controller’s communications
manual and the documentation of your supervisory software to
conduct the MONITORING process.
Follow the procedure below to use the USB communication of the
equipment:
1. Download the NConfig software from our website and install it on
your computer. The USB drivers necessary for operating the
communication will be installed together with the software.
2. Connect the USB cable between the equipment and the
computer. The controller does not have to be connected to a
power supply. The USB will provide enough power to operate the
communication (other equipment functions cannot operate).
3. Open the NConfig software, configure the communication and
start recognition of the device.
4. Consult the NConfig help desk for detailed instructions about
how to use it and solve problems.
The USB interface IS NOT SEPARATE from the
signal input (PV) or the controller’s digital inputs and
outputs. It is intended for temporary use during
CONFIGURATION and MONITORING periods. For
the safety of people and equipment, it must only be
used when the piece of equipment is completely
disconnected from the input/output signals. Using the
USB in any other type of connection is possible but
requires a careful analysis by the person responsible
for installing it. When MONITORING for long periods
of time and with connected inputs and outputs, we
recommend using the RS485 interface, which is
available or optional in most of our products.
INSTALLATION / CONNECTIONS
The controller must be fastened on a panel, following the sequence
of steps described below:
• Prepare a panel cut-out of 45.5 x 45.5 mm;
• Remove the mounting clamps from the controller;
• Insert the controller into the panel cut-out;
• Slide the mounting clamp from the rear to a firm grip at the panel.
RECOMMENDATIONS FOR THE INSTALLATION
• To minimize the pick-up of electrical noise, the low voltage DC
connections and the sensor input wiring should be routed away
from high-current power conductors. If this is impractical, use
shielded cables. In general, keep cable lengths to a minimum.
• All electronic instruments must be powered by a clean mains
supply, proper for instrumentation.
• It is strongly recommended to apply RC'S FILTERS (noise
suppressor) to contactor coils, solenoids, etc.
• In any application it is essential to consider what can happen when
any part of the system fails. The controller features by themselves
can not assure total protection.
ELECTRICAL CONNECTIONS
The controller complete set of features is drawn in Figure 1:
Figure 1 - Connections of the back panel
Power Supply Connections
Observe the power
requirement for the
unit. of required power
supply.
Figure 2 – Power supply connections
Input Connections
• Thermocouple (T/C) and 0-50 mV
The Figure 3a indicates the wiring for the thermocouple and 0-50 mV
signals. If the thermocouple wires need to be extended, use
appropriate compensation cables.
• RTD (Pt100):
Figure 3b shows the Pt100 wiring, for 3 conductors. For proper cable
length compensation, use conductors of same gauge and length).
For 4-wires Pt100, leave one conductor disconnected at the
controller. For 2-wire Pt100, short-circuit terminals 11 and 12.
T/C, 0-50mV
Pt100
Figure 3a - Connection of T/C,
0-50 mV
Figure 3b - Connection of Pt100 a
3-wire
• 4-20 mA:
The connections for current signals 4-20 mA must be carried-out
according to Figure 4a.
4-20mA
Figure 4a - Current connection
4-20 mA
Figure 4b – Connection for 5 V
• 5 V
Refer to Figure 4b for connecting voltage signals.