Siemens Desigo PXC4.M16 - Page 6

6
Siemens Schweiz AG
A6V11937668_en--_b
Smart Infrastructure
2020-07-10
Power consumption (for transformer planning)
Base load (without loading by I/O modules TXM and
field devices)
8 VA / 0.33 A
Field device supply V+ (DC 24 V, 100 mA)
(terminals 8 and 19)
5 VA / 0.2 A
Field device supply V~ (AC 24 V, 2 A)
(terminals 18 and 29)
48 VA / 2 A
I/O modules TXM supply
15 VA / 0.6 A
Function data
Hardware information
Processor
Texas Instruments AM335x, 300 MHz
Storage
128 MByte SDRAM (DDR3)
512 MByte NAND Flash
Data backup in the event of power failure
Energy reserve (supercap) to support real-time clock (7 days).
Data available if stored to flash memory. Occurs every 5 minutes.
Interfaces
Screw terminals, plug-in
Cu-wire or Cu-strand with wire end sleeve
1 x 0.6 mm ∅ to 2.5 mm
2
(22 to 14 AWG)
or 2 x 0.6 mm ∅ to 1.0 mm
2
(22 to 18 AWG)
Cu-strand without wire end sleeve
1 x 0.6 mm ∅ to 2.5 mm
2
(22 to 14 AWG)
or 2 x 0.6 mm ∅ to 1.5 mm
2
(22 to 16 AWG)
Stripping length
6...7.5 mm (0.24...0.29 in)
Screwdriver
Slot screws, screwdriver size 1
Max. tightening torque
0.6 Nm (0.44 lb ft)
BACnet MS/TP interface
Interface type
EIA-485, electrically isolated
Baud rate
9600, 19200, 38400, 57600, 76800, 115200 (depending
on the configuration)
Internal bus termination
120 Ohm, switchable with DIP switch
Internal bus polarization
270 Ohm pull-up/pull-down resistances, switchable with
DIP switch
Cabling (in-house cabling only)
Distance between 2 devices
Length of the MS/TP line
3-wire cable, shielded
Max. 500 m (1650 ft)
Max. 1000 m (3300 ft)
Protection
Short-circuit proof
Protection against faulty wiring with AC 24 V
Modbus RTU interface
Interface type
EIA-485, electrically isolated
Baud rate
1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
(depending on the configuration)
Internal bus termination
120 Ohm, switchable with DIP switch