ABB TTH300 Series - HART Output Characteristics; PROFIBUS PA Output Signals

TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. E 25
Output – HART®
Note
The HART® protocol is an unsecured protocol, as such the
intended application should be assessed to ensure that these
protocols are suitable before implementation.
Transmission characteristics
• Temperature linear
• Resistance linear
• Voltage linear
Output signal
• Configurable 4 to 20 mA (standard)
• Configurable 20 to 4 mA
(Dynamic range: 3.8 to 20.5 mA in accordance with NE 43)
Simulation mode
3.5 to 23.6 mA
Induced current consumption
< 3.5 mA
Maximum output current
23.6 mA
Configurable error current signal
• Overrange 22 mA (20.0 to 23.6 mA)
• Underrange 3.6 mA (3.5 to 4.0 mA)
Output – PROFIBUS PA®
Note
The PROFIBUS PA® protocol is an unsecured protocol, as such
the intended application should be assessed to ensure that
these protocols are suitable before implementation.
Output signal
• PROFIBUS – MBP (IEC 61158-2)
• Baud rate 31.25 kBit/s
• PA-Profile 3.01
• FISCO compliant (IEC 60079-27)
• ID-Number: 0x3470 [0x9700]
Error current signal
• FDE (Fault Disconnection Electronic)
Block structure
• Physical Block
• Transducer Block 1 – Temperature
• Transducer Block 2 – HMI (LCD indicator)
• Transducer Block 3 – enhanced diagnosis
• Analog Input 1 – Primary Value (Calculated Value*
)
• Analog Input 2 – SECONDARY VALUE_1 (Sensor 1)
• Analog Input 3 – SECONDARY VALUE_2 (Sensor 2)
• Analog Input 4 – SECONDARY VALUE_3 (reference junction
temperature)
• Analog Output – optional HMI display
(Transducer Block 2)
• Discrete Input 1 – extended diagnosis 1
(Transducer Block 3)
• Discrete Input 2 – extended diagnosis 2
(Transducer Block 3)
* Sensor 1, Sensor 2 or difference or mean