Document No. 553-140
Installation Instructions
November 4, 2019
Page 2 of 4
Siemens Industry, Inc.
Power Requirements
One of the following power sources is pulled to the
enclosure:
•
120 Vac, 60 Hz and terminated at the 115V
PX Series Service Box.
•
230 Vac, 50/60 Hz and terminated at the 230V
PX Series Service Box.
•
24 Vac, 50/60 Hz Class 1 power limited from a
third-party transformer and connected to a
terminal block.
•
If powering a TX-I/O expansion panel, power
wiring is run from the transformer in the
primary panel to the expansion panel, if
needed.
CAUTION:
For information on extending the TX-I/O
island bus outside the enclosure, see the
APOGEE Wiring Guidelines for Field
Panels and Equipment Controllers
(125-3002).
General Installation Requirements
CAUTION:
All devices not isolated by an Island Bus
Expansion module (TXA1.1BE) must be
connected to the same grounding point.
CAUTION:
Do not connect TX-I/O components to a
floating system neutral. Otherwise,
equipment damage will occur.
•
System Neutral ( ) must be
continuous throughout the TX-I/O
Bus.
•
System Neutral must be connected
to building approved earth-ground
( ) at a single point only at the
24 Vac transformer.
Installation
CAUTION:
Turn OFF AC power at the ON/OFF
switch in the Service Box or
transformer enclosure.
CAUTION:
UL Listings require that NEC Class I
and Class II wiring be kept separate
from each other. Use separate conduit
and cable tie bars to separate Class I
Digital Output (DO) wires from all other
Class II wiring.
CAUTION:
The TX-I/O island bus must extend
from the male bus connector of the P1
Bus Interface Module (BIM).
-
The P1 BIM supplies 24 Vac,
24 Vdc, and communication to I/O
modules on the male bus
connector.
CAUTION:
Only insert or remove the P1 BIM, TX-
I/O Power Supply, and Bus Connection
Module when the power is OFF.
This device includes electrical and
electronic components and must not
be disposed of as domestic waste.
Product recovery and disposal must
comply with all national and local
regulations.
NOTE:
For Smoke Control applications, the
field panel controller must be installed
in the lower half of the enclosure.
For more information, see
TX-I/O I/O
Modules Installation for UL
Applications Installation Instructions
(553-141) and
TX-I/O Power Supply
and Bus Modules Installation
Instructions
(553-142).
