Technical data Proline Promag 55 PROFIBUS DP/PA
142 Endress+Hauser
10.1.4 Output
Output signal Current output
Active/passive selectable, galvanically isolated, time constant selectable (0.01 to 100 s),
Full scale value adjustable, temperature coefficient: typically 0.005% o.r./°C, resolution: 0.5 μA
• Active: 0/4 to 20 mA, R
L
max. 700
• Passive: 4 to 20 mA; supply voltage V
S
18 to 30 V DC; R
i
150
Pulse/frequency output:
Active/passive selectable, galvanically isolated
• Active: 24 V DC, 25 mA (max. 250 mA during 20 ms), R
L
> 100
• Passive: open collector, 30 V DC, 250 mA
• Frequency output: full scale frequency 2 to 10000 Hz (f
max
= 12500 Hz), on/off ratio 1:1,
pulse width max. 2 s
• Pulse output: pulse value and pulse polarity selectable, pulse width configur. (0.05 to 2000 ms)
PROFIBUS DP interface
• Transmission technology (Physical Layer): RS485 according to ANSI/TIA/EIA-485-A: 1998,
galvanically isolated
• Profile Version 3.0
• Data transmission rate: 9.6 kBaud to 12 MBaud
• Automatic identification of data transmission rate
• Function blocks: 2 × analog input, 3 × totalizer
• Output data: volume flow, calculated mass flow, totalizer 1 to 3
• Input data: positive zero return (ON/OFF), totalizer control, value for local display
• Cyclic data transmission compatible with previous model Promag 35S
• Bus address adjustable via miniature switches or local display (optional) at the measuring device
PROFIBUS PA interface
• Transmission technology (Physical Layer): IEC 61158-2 (MBP), galvanically isolated
• Profile version 3.0
• Current consumption: 11 mA
• Permissible supply voltage: 9 to 32 V
• Bus connection with integrated reverse polarity protection
• Error current FDE (Fault Disconnection Electronic): 0 mA
• Function blocks: 2 × analog input, 3 × totalizer
• Output data: volume flow, calculated mass flow, totalizer 1 to 3
• Input data: positive zero return (ON/OFF), totalizer control, value for local display
• Cyclic data transmission compatible with previous model Promag 35S
• Bus address adjustable via miniature switches or local display (optional) at the measuring device
Signal on alarm Current output:
Failsafe mode selectable (e.g. in accordance with NAMUR recommendation NE 43)
Pulse/frequency output:
Failsafe mode selectable
Relay output:
De-energized by fault or power supply failure
PROFIBUS DP/PA
Status and alarm messages in accordance with PROFIBUS Profile Version 3.0
Load See "Output signal"