Siemens Desigo PXC4.M16 - Connection Terminals

16
Siemens Schweiz AG A6V11937668_en--_l
Smart Infrastructure 2023-12-22
Connection terminals
65 66 68 69 7067
3 4
5 6 7
8 9
AC/DC 24V
Terminal Symbol Description Module Channel
3, 4 KNX PXC4.M16: KNX PL-Link
5, 6 ≃, ⏊ Operating voltage AC 24 V or DC 24 V
7 Functional ground (must be connected on the installation
side with the building grounding system (PE)).
9 to 17
20 to 28
Ux Universal inputs / outputs 1…12 61 1…12
⏊ 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
(If PXC4.M16 is powered by DC voltage, then the field device
supply on terminal V≃ is DC voltage, too)
65, 66, 67 MSTP PXC4.M16: Interface EIA-485 (BACnet MS/TP)
68, 69, 70 COM
MSTP
PXC4.M16: Interface EIA-485 (M-bus, Modbus RTU)
PXC4.M16S: Interface EIA-485 (BACnet MS/TP)
Term on, off Switch for bus termination
Polar on, off Switch for polarization
75 to 86 DOx Relay outputs 1…4 11 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 300m (984ft) with shielding