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PXC4.E16 Automation Stations

DesigoTM Automation Stations PXC4.E16

Product Information

The DesigoTM Automation Stations PXC4.E16 is a compact
automation station designed for HVAC and building control systems.
It is freely programmable using a graphical programming interface
and features communication BACnet/IP (BTL certified), a 2-port
Ethernet switch for low-cost cabling, and 16 inputs/outputs. The 16
inputs/outputs consist of 12 universal inputs/outputs and 4 relay
outputs. The system can be extended via I/O modules TXM… and has
a KNX PL-Link bus to connect sensors and operator units (including
bus power). It integrates Modbus data points via RTU and/or TCP,
has a WLAN interface for engineering and commissioning, operates on
AC 24 V, and can be mounted on standard rails or on the wall. It
also features plug-in screw terminal blocks for easy
installation.

The DesigoTM Automation Stations PXC4.E16 is optimized for
flexible automation of HVAC and building control systems, offering
system functions such as alarming, scheduling, trending, access
protection with individually definable user profiles and
categories. It also integrates data points and/or subsystems via
Modbus RTU and/or Modbus TCP. The system is BTL tested for BACnet
communication on IP (BACnet/IP or BACnet/SC), in compliance with
the BACnet standard including B-BC profile (Rev. 1.15).
Additionally, it has BACnet Secure Connect communication as
BACnet/SC node, generic operation via embedded web interface, cloud
connectivity for remote access, and WLAN interface for engineering
and commissioning.

The DesigoTM Automation Stations PXC4.E16 features onboard
inputs/outputs that consist of relay outputs for binary controls,
changeover contact (NO, NC, pulse). It can be combined with I/O
modules TXM (Series D and later) such as digital input module,
universal module without/with local operation and LCD, super
universal module without/with local operation and LCD, relay module
without/with local operation, resistance measuring module (for
Pt100 4-wire), triac module, and digital input and relay
module.

Product Usage Instructions

To use the DesigoTM Automation Stations PXC4.E16, first mount it
on standard rails or on the wall using plug-in screw terminal
blocks for easy installation. The system operates on AC 24 V. Once
installed, connect sensors and operator units to the KNX PL-Link
bus for easy integration.

The DesigoTM Automation Stations PXC4.E16 is freely programmable
using a graphical programming interface. Use this interface to
program the system for your specific HVAC and building control
needs. The system offers system functions such as alarming,
scheduling, trending, access protection with individually definable
user profiles and categories.

The DesigoTM Automation Stations PXC4.E16 integrates data points
and/or subsystems via Modbus RTU and/or Modbus TCP. It is BTL
tested for BACnet communication on IP (BACnet/IP or BACnet/SC), in
compliance with the BACnet standard including B-BC profile (Rev.
1.15). Additionally, it has BACnet Secure Connect communication as
BACnet/SC node, generic operation via embedded web interface, cloud
connectivity for remote access, and WLAN interface for engineering
and commissioning.

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DesigoTM
Automation stations
PXC4.E16

For the control of primary plants
Compact automation station for HVAC and building control systems, freely programmable using graphical programming interface
Communication BACnet/IP (BTL certified) 2-port Ethernet switch for low-cost cabling 16 inputs/outputs: 12 universal inputs/outputs, 4 relay outputs
Extendable via I/O modules TXM… KNX PL-Link bus to connect sensors and operator units (including bus power) Integration of Modbus data points via RTU and / or TCP WLAN interface for engineering and commissioning Operating voltage AC 24 V Mounted on standard rails or on the wall Plug-in screw terminal blocks

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Smart Infrastructure

Functions

Optimized, flexible automation station for HVAC and building automation and control systems System functions (alarming, scheduling, trending, access protection with individually
definable user profiles and categories) Integrates data points and/or subsystems via Modbus RTU and/or Modbus TCP The following functions are available with KNX PL-Link bus:
Communication with room operator units and sensors.
Plug-and-play connection of Siemens field devices with KNX PL-Link. Engineering and commissioning with the ABT Site Tool using graphical function charts Freely programmable. All function blocks, available in libraries, can be graphically
connected. BTL tested BACnet communication on IP (BACnet/IP or BACnet/SC), in compliance with
the BACnet standard including B-BC profile (Rev. 1.15) BACnet Secure Connect communication as BACnet/SC node Generic operation via embedded web interface Cloud connectivity for remote access 2-port Ethernet switch for low-cost cabling WLAN interface for engineering and commissioning Operating voltage AC 24 V DIN rail or screw mounting Plug-in screw terminal blocks Direct connection of field devices

Type summary

PXC4.E16 variants Order number Number of inputs/outputs (Onboard)
Number of universal inputs/outputs (UIO) Number of relay outputs (DO) Number of inputs/outputs (Onboard + TXM) Number of integration data points (Modbus TCP and/or RTU) Total number TXM-I/Os and integration DPs Number of KNX PL-Link devices Number of configurable RS485 interfaces for Modbus RTU integration Number of BACnet/SC nodes connected to PXC4.E16/PXC4.E16S acting as hub

PXC4.E16S S55375-C108 1) 16 12 4 up to 40 0
40 0 0
0 (node only)

PXC4.E16 S55375-C100 1) 16 12 4 up to 40 up to 40
80 2) up to 64 1
0 (node only)

1) For details on engineering, see PXC4, PXC5 & PXC7 Planning overview, A6V13054435.
2) KNX PL-Link DPs do not count as integration points. For KNX PL-Link, only the limitation of BACnet objects have to be considered.

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Onboard inputs/outputs
UIO Universal inputs/outputs support the following signal types: Passive sensors LG-Ni 1000, 2x LG-Ni1000, Pt 1000 (375, 385), NTC 10k (Type II / Beta (0-50 °C) = 3892 K), NTC 100k Resistance sensors 1000 Ohm, 2500 Ohm, 1000…1175 Ohm (for setpoint shift) Voltage input analog 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 Digital input module 8 or 16 I/O points Universal module without / with local operation and LCD Super universal module without / with local operation and LCD Relay module without / with local operation Resistance measuring module (for Pt100 4-wire) Triac module Digital input and relay module

Type TXM1.8D, TXM1.16D TXM1.8U, TXM1.8U-ML TXM1.8X, TXM1.8X-ML TXM1.6R, TXM1.6R-M TXM1.8P TXM1.8T TXM1.4D3R

Data sheet CM2N8172 CM2N8173 CM2N8174 CM2N8175 CM2N8176 CM2N8179 CM2N8188

PXC4 can power TXM extensions modules (for details see planning overview A6V13054435).

KNX PL-Link devices

Description

Type

Wall-mounted temperature sensor

QMX3.P30

Wall-mounted temperature and humidity sensor

QMX3.P40

Wall-mounted temperature, humidity, and CO2 sensor Wall-mounted temperature sensor and room operator unit

QMX3.P70 QMX3.P34

Wall-mounted temperature and humidity sensor and room operator QMX3.P44 unit

Wall-mounted temperature, humidity, and CO2 sensor and room operator unit

QMX3.P74

Data sheet CM2N1602

For details, see planning overview A6V13054435 and data sheets.

Desigo Control Point

Description
BACnet touch panels with integrated Web server 7.0 ” 10.1 ” 15.6 ”
Client Touch Panels with data storage in Web server PXG3.Wx00-1: 7.0 ” 10.1 ” 15.6 ”
BACnet/IP Web server with standard functionality BACnet/IP Web server with extended functionality

Type
PXM30.E PXM40.E PXM50.E
PXM30-1 PXM40-1 PXM50-1 PXG3.W100-2 PXG3.W200-2

Data sheet A6V11664137
A6V11664139
A6V12304192

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System controller
Description System controller to integrate Modbus and MS/TP devices

Type PXC5.E003 PXC7

Data sheet A6V11646020 A6V12505052

Technical and mechanical design The compact build allows for mounting the devices on a standard rail or a wall.

3 1
2
Date/Series S/N
WLAN Default

11 10 12

1 Plastic housing
2 Service button (identification in the network and WLAN on/off)
3 LEDs for communication and state

4 2-port Ethernet switch with 2 LEDs per port for display purposes
5 PXC4.E16: Plug-in terminal block with screw terminals KNX PL-Link
6 Plug-in terminal block with screw terminals Power supply
7 Plug-in terminal blocks with screw terminals Universal inputs/outputs, field device supply
8 Connector for I/O modules TXM
9 Plug-in terminal block with screw terminals Relay outputs
10 PXC4.E16: Plug-in terminal block with screw terminals COM, Modbus RTU
11 PXC4.E16: DIP switch for bus termination and polarization COM
12 Slider for mounting on DIN rails
13 Eyelets for cable ties
14 Holes for wall mounting
15 Date / Series and Serial number
16 QR code for default WLAN access Description see Technical data

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LED displays

Activity

LED Ethernet 1/2
RUN
COM TX (PXC4.E16) COM RX (PXC4.E16) SVC

Color Green
Yellow Green
Red
Blue Yellow Yellow

Activity
Continuously ON Continuously OFF Flashing
Continuously ON Continuously OFF
Continuously ON Continuously OFF Flashing
Continuously OFF Continuously ON Rapid flashing
Continuously ON Continuously OFF
Flashing Continuously OFF

Red

Continuously OFF

Flashing

Flashing per wink command

Function Link active No connection Network traffic Link 100 Link 10 Mbps Device operational Device not operational Start-up or program halted OK HW or SW fault Firmware or application missing/corrupted Connection to the cloud OK No connection to the cloud Communication No communication to subsystem
OK Device is not configured Identification of the device after receipt of wink command

5 Hz

WLAN

Blue

Service button

Steady OFF Steady ON Flashing
Press 0.2 … 1 s Press 1 … 3 s
As per description

WLAN inactive WLAN active and at least one WLAN client connected WLAN active and no WLAN client connected
Identification in the network Enable / disable WLAN WLAN is disabled automatically after 10 min if no client is connected
Do the following to reset the device to factory state:
1. Power off the device.
2. Power on the device.
3. Wait until all LEDs light up and turn off again, then press the Service button.
4. Keep the Service button pressed until all LEDs light up, then release the button. All LEDs go off, the device restarts.
5. Wait until the device has fully started unconfigured (green RUN LED and red SVC LED are flashing)

Product documentation
Related documents such as the environmental declarations, CE declarations, etc., can be downloaded from the following Internet address:
www.siemens.com/bt/download

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Notes Safety

CAUTION
National safety regulations Failure to comply with national safety regulations may result in personal injury and property damage. Observe national provisions and comply with the appropriate safety regulations.

Mounting position and ambient temperature The devices can be snapped onto standard rails or screwed onto a flat surface. Plug-in screw terminals connect power and interfaces.

Ambient temperature -5…50 °C (23…122 °F) Wall, horizontal
From left to right From right to left

Ambient temperature -5…45 °C (23…113 °F) Overhead Wall, vertically
From top to bottom
From bottom to top On a horizontal surface

Installation

WARNING
No internal line protection for supply lines to external consumers Risk of fire and injury due to short-circuits! Adapt the wire cross sections as per local regulations to the rated value of the installed
fuse.

Disposal

WARNING
The relay outputs may be connected to mains voltage Risk of electric shock! Incorrect installation of the device may lead to electric shock injuries when touching the device! Install the device in a lockable cabinet or use terminal covers. Do not install the device in locations where children are likely to be present. Conductors with a cross-section of 0.5 mm2 (AWG24) or greater shall comply with the
requirements of IEC 60332-1-2 and IEC 60332-1-3 or IEC TS 60695-11-21.
The device is considered an electronic device for disposal in accordance with European Directive and may not be disposed of as domestic waste. Use only designated channels for disposing the devices. Comply with all local and currently applicable laws and regulations.

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Technical data Power supply

Operating voltage (24 V~, , )

Functional ground (US) Functional earth
Screw terminals for wire cross sections up to Internal fusing External supply line fusing (EU)

AC 24 V -15 / +20 % (PELV) AC 24 V Class 2 (US) 48…63 Hz
The terminal for the functional ground must be connected on the installation side with the building grounding system (PE).
Max. 2.5 mm2 (14 AWG)
4 A irreversible / non-replaceable
Non-renewable fuse max. 10 A slow-blow or circuit breaker max. 13 A Tripping characteristic B, C, D per EN 60898 or Power supply with current limitation of max. 10 A

Power consumption (for transformer planning)

Full load
Base load PXC4.E16S: without loading by I/O modules TXM and field devices PXC4.E16: without loading by I/O modules TXM, KNX PL-Link, and field devices
Field device supply V+ (DC 24 V, 100 mA) (terminals 8 and 19)
Field device supply V~ (AC 24 V, 2 A) (terminals 18 and 29)
I/O modules TXM supply
KNX PL-Link supply

PXC4.E16S 78 VA / 3.25 A 10 VA / 0.4 A
5 VA / 0.2 A 48 VA / 2 A 15 VA / 0.6 A

PXC4.E16 82 VA / 3.4 A 10 VA / 0.4 A
5 VA / 0.2 A 48 VA / 2 A 15 VA / 0.6 A 4 VA / 0.17 A

Function data

Hardware information Processor Storage

Texas Instruments AM335x, 300 MHz
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. The interval of 5 minutes is only valid for change log but not for trending. In case of a power failure, trend log data can be lost up to 30 minutes.

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Interfaces

Screw terminals, plug-in Cu-wire or Cu-strand with wire end sleeve
Cu-strand without wire end sleeve
Stripping length Screwdriver Max. tightening torque

1 x 0.6 mm to 2.5 mm2 (22 to 14 AWG) or 2 x 0.6 mm to 1.0 mm2 (22 to 18 AWG) 1 x 0.6 mm to 2.5 mm2 (22 to 14 AWG) or 2 x 0.6 mm to 1.5 mm2 (22 to 16 AWG) 6…7.5 mm (0.24…0.29 in) Slot screws, screwdriver size 1 with shaft ø = 3 mm 0.6 Nm (0.44 lb ft)

Ethernet interface Plug Interface type Bit rate Protocol
Cabling (in-house cabling only), cable type
Cable length

2 x RJ45, shielded
10Base-T / 100Base-TX, IEEE 802.3 compatible
10/100 Mbps, autosensing
BACnet/IP on UDP/IP, BACnet/SC on TCP/IP, and HTTPS on TCP/IP
10 Mbps: Min. CAT3, shielded cable is recommended 100 Mbps: Min. CAT5, shielded cable is recommended
Max. 100 m (330 ft)

WLAN interface

Interface type

Wireless access point

Supported standards Frequency band WLAN channels Maximum radio-frequency power

IEEE 802.11b/g/n 2.4…2.462 GHz 1…11 16.4 dBm

Distance (unobstructed field)

Min. 5 m (16 ft)

Device pairing

Activation / Deactivation with service button
Automatic switch off after 10 minutes if no WLAN-client is connected.
Optionally, for cyber security reasons, the WLAN can be permanently disabled via configuration.

Default SSID and WLAN password: Scan the QR code. It will show something like WIFI:S:PXC4.E16_0000550;T:WPA;P:1400052738;; Then SSID = PXC4.E16_0000550 and password = 1400052738
Determine manually: Use the information from the Date/Series/SN block It will show something like:
Date/Series: 20190423A0000550 S/N: 1400052738
SSID = <ASN>_<Running number after the series letter> and password = <S/N>

KNX PL-Link interface Type
Cabling (in-house cabling only) Cable length Internal bus power

KNX TP1 PL-Link, galvanic isolation Baud rate: 9.6 kbps
2-wire cable, 0.75 mm2 / AWG20 or 1 mm2 / AWG18 With internal supply: Max. 80 m (262 ft) With external supply: Max. 1000 m (3300 ft)
Max. 50 mA When using external bus power for KNX PL-Link, switch off the internal bus power via the ABT Site Tool.

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Inputs

I/O modules TXM interface Nominal voltage Power supply for I/O modules TXM Parallel switchable with 24VDC Supply TXS1.12F4
Protection Connector for I/O modules TXM on the side: No protection against faulty wiring with AC 24 V
On PXC4.E16
Modbus RTU interface Interface type Baud rate
Internal bus termination Internal bus polarization
Cabling (in-house cabling only) Cable length
Protection

DC 24 V Max. 300 mA For details, see: TX-I/O engineering and installation, CM110562 Short-circuit proof No electrical protection. Use the cover
EIA-485, electrically isolated 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200 (depending on the configuration) 120 Ohm, switchable with DIP switch 270 Ohm pull-up/pull-down resistances, switchable with DIP switch 3-wire cable, shielded cable recommended (shield must be connected to building earth in the mounting panel) Max. 1000 m (3300 ft) Short-circuit proof Protection against faulty wiring with AC 24 V

12 universal inputs U1…U12 with the following functions

Temperature measurement, analog Type AI NTC10K (Type II / Beta (0-50 °C) = 3892 K)
AI NTC100K
AI PT1K 385 (EU) *)
AI PT1K 375 (NA) *) AI (LG-)Ni1000 *) AI 2x (LG-)Ni1000 *)

Range (over range)
-40…115 °C (-52.5…155 °C) -48…239 °F (-62.5…311 °F)
-40…125 °C (-52.5…155 °C) -48…257 °F (-62.5…311 °F)
-50…600 °C (-52.5…610 °C) -58…1112 °F (-62.5…1130 °F)
-50…180 °C (-52.5…185 °C) -58…356 °F (-62.5…365 °F)

Resistance sensor, analog Type AI 1000 Ohm *) AI 2500 Ohm *) AI Pt1000 *) AI 1000-1175 Ohm *) for setpoint shift

Range (over range) 0…1000 (0…1050 ) 0…2500 (0…2650 ) 0…2500 (0…2650 ) 1000…1175 (900…1295 )

*) A fixed value of 1 is calibrated to correct line resistance.

Voltage measurement, analog

Type

Range (over range)

AI 0…10 V

0…10 V (-1.5…11.5 V)

AI 0…10 V standard

0…100% (-10…110%)

Open connection: Negative voltage -1.5 V (line failure detection)

Resolution 10 mK (25 °C) 0.018 °F
20 mK 0.036 °F 10 mK 0.018 °F
Resolution 0.1 0.1 0.1 0.1
Resolution 1 mV 0.01%

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Outputs

Current measurement, analog (only inputs U1, U2, U7, U8)

Type

Range (over range)

AI 4-20 mA

4…20 mA (1.6…22.4 mA)

AI 0-20 mA

0…20 mA (-3…23 mA)

Resolution 1 µA 1 µA

Load Min. 490 Min. 490

Digital input

Contact query voltage

Contact query current

Contact resistance for closed contacts

Contact resistance for open contacts

Counter memory (counter inputs

Min. closing/operating time [ms] including bounces

BI NO / BI NC

BI Pulse NO

CI Mech (25Hz) 20

CI El (100Hz)

21.5…25 V

1 mA; 6 mA initial current

Max. 200

Min. 50 k

0 … 4.3 x 109 (32-bit counter)

Of which Max. bounce time [ms]

Max. counter frequency (symmetrical)

25 Hz

100 Hz

Analog output
Type AO 0-10 V AO 0-10 V standard

Range (over range)
0…10 V (-0.05…10.6 V)
0…100% 0% = 0 V, 100% = 10 V (-0.05…10.6 V)

Resolution 1 mV 0.01 %

Output current Max. 1 mA Max. 1 mA

Relay output (outputs DO1…DO4) External supply line fusing Non-renewable fuse Circuit breakers Switching voltage AC/DC
Current load AC
Current load DC
Switch-on current
Response/release time Contact life at AC 250 V (reference values) At 0.3 A resistive NO contact at 3 A resistive NC contact at 2 A resistive Reduction fact at ind. load (cos phi = 0.6) Insulating strength between relay contacts and system electronics (reinforced insulation).

Max. 10 A, slow Max. 13 A, characteristic B, C, D as per EN 60898
Max. AC 250 V / DC 30 V Min. AC/DC 12 V
NO contact: Max. 4 A resistive, 3 A inductive (cos phi 0.6) NC contact: max. 2 A resistive, 1.5 A inductive (cos phi 0,6) Min. 1 mA at AC 250 V Min. 10 mA at AC 12 V
NO contact: Max. 3 A resistive at DC 30 V NC contact: Max. 1 A resistive at DC 30 V Min. 10 mA resistive at DC 12 V
NO contact: Max. 10 A (1 s) NC contact: Max. 3 A (1 s)
7 ms / 3 ms typical
5 x 105 switchings 1 x 105 switchings 1 x 105 switchings 0.6
AC 3750 V, as per EN 60730-1

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Conformity

Field device supply (Onboard) AC 24 V (terminal V~) DC 24 V (terminal V+)

Max. 2 A, short-circuit proof *)
Max. 100 mA, short-circuit proof, protected against incorrect wiring with AC 24 V

Field device supply (I/O modules TXM) AC 24 V (terminal V~ on the I/O modules TXM)

Max. 2 A, short-circuit proof *)

*) Sum total onboard V~ and TXM bus V~ max. 2 A

Ambient conditions and protection classification

Classification as per EN 60730 Automatic action Control function Degree of pollution Overvoltage category

Type 1 Class A 2 III

Protection against electric shock

Suitable for use in protection class I or II systems

Degree of protection of housing to EN 60529 Front parts in DIN cut-out Terminal part

IP30 IP20

Climatic ambient conditions
Storage / Transport (packaged for transport) as per IEC EN 60721-3-1 / IEC EN 6072132

Operation as per IEC/EN 60721-3-3

Class 1K22 / 2K12 Temperature -25…70 °C (-13…158 °F) Air humidity 5…95 % (non-condensing)
Class 3K23 Operation in enclosed dry locations, having no temperature or humidity control Temperature -5…50 °C (23…122 °F) (for details see chapter Mounting) Air humidity 5…95 % (non-condensing)

Mechanical ambient conditions Transport per IEC/EN 60721-3-2 Operation as per IEC/EN 60721-3-3

Class 2M4 Class 3M11

Standards, directives and approvals Product standard Product family standards Electromagnetic compatibility (EMC)
EU conformity (CE) EAC compliance RCM conformity UL/cUL certification (US / Canada) CSA certification
FCC BACnet. Environmental compatibility 1)

IEC/EN 60730-1
IEC/EN 63044-x
For residential, commercial, and industrial environments
See CE declaration 1)
Eurasian compliance
See RCM declaration 1)
UL916; http://ul.com/database
C22.2, http://csagroup.org/services-industries/productlisting
CFR 47 Part 15C
B-BC
The product environmental declaration 1) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).

1) Documents can be downloaded at http://siemens.com/bt/download.

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Housing

FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation
FCC Caution: Changes or modifications not expressly approved by Siemens Switzerland Ltd. could void user authority to operate the equipment. United States representative https://new.siemens.com/us/en/products/buildingtechnologies/home.html
Industry Canada statement This device complies with ISED’s license-exempt RSSs. Operation is subject to the following two conditions:
1. This device may not cause interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.
Radiofrequency radiation exposure statement This equipment complies with FCC and IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body.
This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.

Color top/bottom Dimensions Weight without/with packaging

RAL 7035 (light grey) / RAL 7016 (anthracite grey) per DIN 43880, see dimensions 483 g / 553 g

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Connection terminals

89 567

68 69 70

Digital inputs Count inputs:

Terminal Symbol Description

1, 2

2 x RJ45 interface for Ethernet with switch

Module Channel

3, 4

KNX

PXC4.E16: KNX PL-Link

5, 6

24 V ~, Operating voltage AC 24 V

Functional ground must be connected on the installation side with the

building grounding system (PE).

9 to 17 Ux

Universal inputs/outputs

20 to 28

Measuring ground for Ux

8, 19

V+

DC 24 V power for field devices 2.4 W / <100 mA

18, 29 V~

AC 24 V power for field devices 48 VA / 2 A

68, 69, 70 COM PXC4.E16: Interface EIA-485 (Modbus RTU)

Term

on, off PXC4.E16: Switch for bus termination

Polar

on, off Switch for polarization

75 to 86 DOx

Relay outputs

1…12 1…4

Wiring lines for field devices Wiring length max. 300 m (1,000 ft), CU wire or CU strand. Cross-section depending on the signal 30 m (100 ft) applies for signal types AI NTC10K and AI NTC100K or 80 m (260 ft) with shielding
Examples of connection diagrams for universal inputs/outputs
S1 Feedback contact (NO)

Ux
S2 Feedback contact (NC)

Ux
Counter inputs, that count faster than 1 Hz and are laid with more than 10 meters using analog inputs in the same cable duct, must be shielded.

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Analog inputs Analog outputs

Ux
Ux
Ux V+ Ux
Ux
V+ Ux
Ux V+ Ux
Ux

B1 Temperature sensor LG-Ni 1000

B2 Temperature sensor, general

B3 Resistance transmitter

V+

B4 Active sensor powered by the automation station

V+
+

B5 Active sensor with external power Do NOT ground external power (ground loops)
B6 Active sensors 0 … 20 mA or 4 … 20 mA (2-wire) On U1, U2, U7, U8 only
Y1 Device with input DC 0…10 V

V+

Y2 General device with control input DC 0…10 V, Powered by the automation station

V+

Y3 General device with control input DC 0…10 V, Do NOT ground external power (ground loops)

Warranty

The application-specific technical data is guaranteed only in combination with the Siemens products listed in the ‘Device combinations’ section. If third-party products are used, any guarantee provided by Siemens will be invalidated.

14 Siemens Schweiz AG Smart Infrastructure

A6V11646018_en–_j 2022-10-06

117 (41.61″) 124 (4.88″) 45 (1.77″) 67 (2.64″) 110 (4.33″)

Dimensions

All dimensions in mm and inches.
PXC4.E16
198 (7.80″) 183 (7.20″)

3 (0.12″) 7 (0.28″)

70.5 (2.78″) 49 (1.91″)

4.1 (0.16″)
PXC4.E16 with TXM module
198 (7.80″)

26.5 (1.04″)

64 (2.52″)

7 (0.28″)

90 (3.54″)

269 (10.59″)
Siemens Schweiz AG Smart Infrastructure

15 A6V11646018_en–_j
2022-10-06

Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug +41 58 724 2424 www.siemens.com/buildingtechnologies

Document ID Edition

A6V11646018_en–_j 2022-10-06