Siemens Maxum II Reference Manual page 98

Specifications
Digital inputs
Digital outputs
Analog inputs
Analog outputs
Termination
Table 3-13 Communication
Serial ports
Ethernet
Table 3-14 Gas sample inlet conditions
Sample flow
Sample filter size
Minimum sample pressure
Maximum sample pressure
Maximum sample temperature
Materials in contact with sample
Table 3-15 Combustion gas supply
Combustion gas
Combustion air
98
● Optically coupled with a common for all inputs.
● Self powered floating-contact input, or configurable for sinking or sourcing current.
● Sourcing current mode: 24 V internal isolated supply, with positive terminal of
supply at common.
● Sinking current mode: 5 V internal isolated supply, with negative terminal of supply
at common.
Floating double-throw contacts, maximum contact load rating 1 A at 30 V (AC or DC).
External diode shunt suppression should be used for inductive DC loads, preferably
at the load
-20 to 20 mA into 50 Ω or
-10 to 10 V Rin = 0.1 MΩ
With alternate insulation up to 10 V
0/4 to 20 mA into max. 750 Ω, common negative pole, electrically isolated from ground;
freelyconnectable to ground
SYSCON-based I/O: Terminal strip for braided or solid cable with maximum section of
1.5 mm (16AWG)
2
Expansion board-based I/O: Screw terminal for shielded or solid cable with a maximum
area of 0.82 mm (18AWG)
2
4 RS232/RS485 ports, e.g. Modbus
● Standard 10/100 BaseT Ethernet with 4 RJ45 connectors e.g. Modbus TCP IP or
OPC
● Optional ESBF board Fiber-optic 100Base FX multimode with ST connection 3 x
RJ45 and 1 x optical
5 to 100 ml/min (depending on application)
0.1 to 5 μm with gaseous samples (depending on type of valve)
35 kPa (5 psig) standard
200 kPa (29 psig) standard, higher pressure as option
121°C (250°F) standard; higher temperature as option
Stainless steel and Teflon; other materials as option
● Hydrogen with a purity of 99.999%
● Typical consumption quantity: 2 000 l/month per detector module
● Reference air (< 1 ppm THC, O
through instrument air with catalytic purification (optional).
● Typical consumption quantity: 26 000 l/month
concentration 20 to 21%). Synthetic air, or supply
2
Manual, 7/2017, 2000596-001
Maxum II Reference Manual