26
TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. G
... 8 Electrical connections
... Electrical data for inputs and outputs
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
Note
Regardless of the alarm setting (underrange or overrange), a
high alarm or low alarm is always generated for some internal
device errors (e.g. hardware errors). More detailed information
can be found in the SIL Safety Manual.
Before SW-Rev. 3.00
Note
The default factory setting for the error current signal is high
alarm 22 mA.
•
Overrange / high alarm 22 mA (20.0 to 23.6 mA)
•
Underrange / low alarm 3.6 mA (3.5 to 4.0 mA)
From SW-Rev. 3.00
Note
The default factory setting for the error current signal is low
alarm 3.5 mA, in accordance with NAMUR recommendations
NE 93, NE 107 and NE 131.
•
Overrange / high alarm 22 mA (20.0 to 23.6 mA)
•
Underrange / low alarm 3.5 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
For detailed information see the PROFIBUS PA® interface
description (COM/TTX300/PB).