FMC Corporation - Talstar 80 - Handbuch (Seite 91)

Proline Promass 80 PROFIBUS PA Technical data
91
Calculation example for gas:
• Sensor type: Promass F, DN 50
• Gas: air with a density of 60.3 kg/m³ (at 20 °C and 50 bar)
• Measuring range (liquid): 70000 kg/h
• x = 90 (for Promass F DN 50)
Max. possible full scale value:
g
max(G)
= g
max(F)
·
ρ
(G)
÷ x [kg/m³] = 70000 kg/h · 60.3 kg/m³ ÷ 90 kg/m³ = 46900 kg/h
Recommended full scale values
See information on
→ Page 101 ff. ("Limiting flow")
Operable flow range Greater than 1000 : 1. Flows above the preset full scale value do not overload the amplifier, i.e.
totalizer values are registered correctly.
Input signal Status input (auxiliary input):
U = 3 to 30 V DC, R
i
= 5 k
Ω, galvanically isolated.
Configurable for: positive zero return, error message reset, zero point adjustment start, batching
start/stop (optional), totalizer reset for batching (optional).
10.1.4 Output
Output signal • PROFIBUS PA in accordance with IEC 61158 (MBP), galvanically isolated
• Profile Version 3.0
• Data transmission rate: 31.25 kBaud
• Current consumption: 11 mA
• Permitted supply voltage: 9 to 32 V
• Bus connection with integrated reverse polarity protection
• Error current FDE (Fault Disconnection Electronic): 0 mA
• Signal coding: Manchester II
• Bus address can be configured via miniature switches, via the local display (optional) or operating
program
Signal on alarm PROFIBUS PA interface:
Status and alarm messages in accordance with PROFIBUS Profile Version 3.0
10.1.5 Power supply
Electrical connections
→ Page 26 ff.
Supply voltage 85 to 260 V AC, 45 to 65 Hz
20 to 55 V AC, 45 to 65 Hz
16 to 62 V DC
Cable entries Power supply and signal cables (inputs/outputs):
• Cable entry M20 x 1.5 (8 to 12 mm)
• Threads for cable entries, ½" NPT, G ½"
Connecting cable for remote version:
• Cable entry M20 x 1.5 (8 to 12 mm)
• Threads for cable entries, ½" NPT, G ½"