Output; Hart Output; Profibus Pa Output; Foundation Fieldbus Output - ABB TTH300 Operating Instruction

Specifications

10.2 Output

10.2.1 HART output

Transmission characteristics
Temperature linear
Resistance linear
Voltage linear
Output signal
Configurable 4 ... 20 mA (standard)
Configurable 20 ... 4 mA
(dynamic range: 3.8 ... 20.5 mA in accordance with NE 43)
Simulation mode
3.5 ... 23.6 mA
Induced current consumption
< 3.5 mA
Maximum output current
23.6 mA
Configurable error current signal
Override 22 mA (20.0 ... 23.6 mA)
Underdrive 3.6 mA (3.5 ... 4.0 mA)

10.2.2 PROFIBUS PA output

Output signal
PROFIBUS – MBP (IEC 61158-2)
baud rate 31.25 kbit/s
PA profile 3.01
FISCO-compliant in accordance with IEC 60079-27
IDENT_ NUMBER: 0x3470 [0x9700]
Error current signal
FDE (Fault Disconnection Electronic)
Block structure
Physical block
transducer block 1 – temperature
transducer block 2 – HMI (LCD)
transducer block 3 – extended diagnostics
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 point temp.)
analog output – optional HMI display (transducer block 2)
discrete input 1 – extended diagnostics 1 (transducer block 3)
discrete input 2 – extended diagnostics 2 (transducer block 3)
* Sensor1, sensor2, or difference, or mean

10.2.3 FOUNDATION Fieldbus output

Output signal
FOUNDATION Fieldbus H1 in accordance with IEC 611582
Baud rate 31.25 kbit/s, ITK 5.1
FISCO-compliant in accordance with IEC 60079-27
Device ID: 0003200125
Error current signal
FDE (Fault Disconnection Electronic)
Block structure 1)
Resource block
Transducer block 1 – temperature
Transducer block 2 – HMI (LCD)
Transducer block 3 – extended diagnostics
Analog input 1 – PRIMARY_VALUE_1 (sensor 1)
Analog input 2 – PRIMARY_VALUE_2 (sensor 2)
Analog input 3 – PRIMARY_VALUE_3 (calculated value*)
Analog input 4 – SECONDARY_VALUE (reference point temp.)
Analog output – optional HMI display (transducer block 2)
Discrete input 1 – extended diagnostics 1 (transducer block 3)
Discrete input 2 – extended diagnostics 2 (transducer block 3)
PID – PID controller
* Sensor1, sensor2, or difference, or mean
LAS (Link Active Scheduler) link master functionality
1) For the block description, block index, execution times, and block class, refer to the
interface description.
64

10.3 Power supply (polarity safe)

Speisespannung
Two-wire technology; power lines = signal lines

10.3.1 HART power supply

Supply voltage
Non ignition-proof application with or without LCD:
U = 11 ... 42 V DC
S
Ignition-proof applications with or without LCD:
U = 11 ... 30 V DC
S
Max. permissible residual ripple for supply voltage
During communication in accordance with HART FSK
"Physical Layer" specification, version 8.1 (August 1999)
Section 8.1
Undervoltage detection
U < 10 V results in I
Terminal-Mu
Maximum load
R = (supply voltage – 11 V) / 0.022 A
Load
W W
[ ] [ ]
1400
1250
1000
860
750
500
C
250
11 16
Fig. 25: Max. load depending on supply voltage
A TTH300
B TTH300 In ia hazardous area design
C HART communication resistor
Maximum power consumption
P = U x 0.022 A
s
→
e.g., U = 24 V
s
10.3.2 PROFIBUS / FOUNDATION Fieldbus power
supply
Supply voltage
Non ignition-proof application with or without LCD:
U = 9 ... 32 V DC
S
Ignition-proof applications with or without LCD:
U = 9 ... 17.5 V DC (FISCO)
S
U = 9 ... 24 V DC (Fieldbus Entity model I.S.)
S
Current consumption ≤ 12 mA
TTH300
= 3.6 mA
a
A
B
30 42
P = 0.528 W
max
OI/TTH300-EN
[V DC] [V DC]
A00001