Operating Instructions

Chapter 2—Hardware Features
16- and 24-Point Compact Series Diagram
0
29 |
118
Siemens Industry, Inc.
Owner's Manual
553-104
Building Technologies
2018-10-01
PXC-16 and PXC-24 Features and Symbols.
Terminal Block Connection
Label
Indicates
1
24V
~
Supply voltage, 24 Vac input.
2 System neutral.
3 Functional earth.
4 through 12 (PXC-16)
4 through 18 (PXC-24)
Digital Output relay.
A (22 through 24)
+ –
RS-485 port.
B 10B/100B Ethernet port.
C USB Device port.
25, 27, 28 Universal Input (+) (UI1 through UI3).
26, 29
–
Signal Common.
30, 31, 33, 34, 36 Universal Input/Output (+) (U4 through U8).
37, 39 24 Vdc external sensor power (+) source.
38, 40
–
Signal Common.
41, 43, 44, 46 Universal Input/Output (+) PXC-24 only (U9 through U12).
42, 45
–
Signal Common (PXC-24 only).
47, 49, 50, 52 Super Universal Input/Output (+) PXC-24 only (X13 through X16).
48, 51
–
Signal Common.
53, 55, 57
Analog Output (+) (PXC-16: AO9 through AO11; PXC-24: AO17 through
AO19).
54, 56
-
Signal Common.
58, 60 Digital Input (+)PXC-16 only (DI12 through DI13).
59
–
Signal Common (PXC-16 only).
D
HMI
Human-Machine Interface port
PXC-16 and PXC-24 Status LEDs.
Status LED
Label
Indicates
RUN LED
RUN
(green)
ON - Normal steady Green, unit is powered and running.
OFF - Error.
FAULT LED
FAULT
(red)
(for future use)
Normal Off, not currently implemented. May be Red if processor does
not complete boot.
LOW BATT LED
LOW BATT
(red)
ON - Error.
OFF - Normal operation.
Ethernet COMM LED
COMM
(yellow)
ON – Linked to Ethernet network.
Flashing indicates communicating with Ethernet network.
OFF - No link to Ethernet network.