2
Siemens Schweiz AG
A6V11937668_en--_b
Smart Infrastructure
2020-07-10
Functions
Automation station for HVAC and building control systems.
● System functions (alarming, scheduling, trending, access protection with individually
definable user profiles and categories)
● Freely programmable (close resemblance to CEN standard 11312). All function blocks,
available in libraries, can be graphically connected.
● Engineering and commissioning with the ABT Site Tool using graphical function charts
● BACnet communication, in compliance with the BACnet standard including B-BC profile
(Rev. 1.15)
● Generic object viewer for device local data points via an embedded web-based interface
● Wireless connection for engineering and commissioning
● Integration of Modbus data points via RTU
● Direct connection of field devices
Type summary
Type
Order number Description
PXC4.M16
S55375-C101
Compact automation station for BACnet MS/TP
Inputs/outputs
Total number of inputs/outputs (Onboard)
16
Number of universal inputs/outputs (UIO)
12
Number of relay outputs (DO)
4
Number of inputs/outputs (O TXM)
40
Number of Modbus data points RTU
40
UIO
Universal inputs/outputs support the following signal types:
●
Passive sensors LG-Ni 1000, 2x LG-Ni1000, Pt 1000 (*75, 385), NTC 10k, NTC 100k
●
Resistance sensors 1000 Ohm, 2500 Ohm, 2650 Ohm, 1000...1175 Ohm (for setpoint shift)
●
Active sensors DC 0 ... 10 V
●
Current measurement analog DC 0...20 mA or 4...20 mA, (inputs U1, U2, U7, U8)
●
Binary potential-free contacts for signaling functions
●
Counter to 25 Hz (electronic switch to 100 Hz)
●
Analog outputs DC 0…10 V
DO
Relay outputs for binary controls, changeover contact
(NO, NC, pulse)
Equipment combinations
I/O modules TXM (Series D and later)
Description
Type
Data sheet
Digital input module 8 or 16 I/O points
TXM1.8D, TXM1.16D
CM2N8172
Universal module without / with local operation and LCD
TXM1.8U, TXM1.8U-ML
CM2N8173
Super universal module without / with local operation and LCD
TXM1.8X, TXM1.8X-ML
CM2N8174
Relay module without / with local operation
TXM1.6R, TXM1.6R-M
CM2N8175
Resistance measuring module (for Pt100 4-wire)
TXM1.8P
CM2N8176
Triac module
TXM1.8T
CM2N8179
Digital input and relay module
TXM1.4D3R
CM2N8188
PXC4 can power TXM extensions modules (for details see planning overview A6V11973797)
