Novus TXMINI-M12-485 Operating Manual

TXMINI-M12-485 / TXMINI-485 TRANSMITTER
OPERATING MANUAL – V1.0x I

INTRODUCTION

TxMini-M12-485 is a compact temperature transmitter with internal
connection to temperature sensors Pt100. It consists of an
electronic circuit encapsulated and a M12 connection for power
and RS485 communication, which includes the screw thread for
closing the sensor output.
You should use an RS485 interface with Modbus RTU commands
to configure the transmitter. The DigiConfig software for
Windows® allows you to configure all features of the transmitter as
well as its diagnosis, and the possibility of using other Supervisory
software for configuration and reading of the information provided
by the device.

SPECIFICATIONS

Sensor Input:
Pt100 RTD: 3-wires connection, current drain of 0.8 mA, α=
0.00385, according NBR 13773. IEC 60751 (ITS-90).
Typical accuracy: 0.1 %;
Minimum accuracy: 0.2 %;
Measuring range: -200 to 600 ºC;
Minimum measuring range: 40 ºC.
Factory adjusted and calibrated using traceable standards.
Resistance effect of the sensor wires: 0.005 °C / Ω.
Maximum permissible resistance of the sensor wires: 25 Ω.
Settling time of the measurement: < 2.5 s.
Temperature effect: < ± 0.2 % / 25 °C.
Response time: 2 s (typical).
Maximum voltage allowed at input terminals no sensor: 3 V.
Power supply: 7 to 40 Vdc, current < 10 mA.
Operating Temperature: -40 to 85 °C.
Ambient humidity: 0 to 90 % UR.
No electrical isolation between input and output.
Internal protection against polarity inversion of the supply
voltage.
Connection Wire Cross Section: 0.14 to 1.5 mm².
Screw Tightening: 0.8 Nm.
Housing: Polyamide.
Order codes:
- P/N: 8806060420: TxMini-M12-485 Transmitter;
- P/N: 8806060430: TxMini-M12-485-CN Transmitter;
- P/N: 8806060520: TxMini-485 Transmitter (Equipment can only
be configured during production);
- P/N: 8806060530: TxMini-485-CN Transmitter.
- P/N: 8806065000: M12 Cable Connector for TxMini-M12
(accessory).
NOVUS AUTOMATION

CONFIGURATION

Table 1 shows the default parameters of the transmitter:
Parameters
Error Value
Offset
Unit
Digital Filter
Timer Setting
Baud Rate
Data Bits
Parity
Stop Bits
Address
Table 1 - Default parameter values for TxMini-M12-485
When you use the transmitter with default configuration, none
intervention is required and its installation can be performed
immediately. When a change in the configuration parameters is
necessary, you can do it using DigiConfig software. You can
download the configuration software freely from the manufacturer's
website. To install it run the "DigiConfigSetup.exe" file and follow
the installer´s instructions. Fig. 1 shows the main screen of
DigiConfig software.
There is no electrical isolation between input and
output.

SOFTWARE CONFIGURATION:

Fig. 1 - TxMini-M12-485 configuration screen in DigiConfig software
Configuration
0
0 ºC
ºC
0
60 s
1200
8
Par
1
247
1/5