Installation Instructions

Document No. 553-141
Installation Instructions
April 30, 2020
Siemens Industry, Inc. Page 3 of 4
Class 1 Relay Current Interrupt
Install External supply line protection: Slow-blow fuse
max. 6 A or Circuit breaker max. 10 A Characteristic B,
C, D according to EN 60898.
Installation
WARNING
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 TX-I/O
Power Supply, Bus Connection Module or
Bus Interface Device.
• Male bus connector supplies I/O
modules with fuse protected 24 Vac
distribution, 24 Vdc power and TX-I/O
communication. Analog I/O modules
detect loss of 24Vac.
• Female bus connector where provided
shares 24 Vdc power and TX-I/O
communication but does not connect
24Vac.
CAUTION
Only insert or remove the field panel
controller, TX-I/O Power Supply, Bus
Connection Module or Bus
Interface Device
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.
Basic Steps for Connecting Devices to the
DIN Rail
The island bus establishes its own connection when
TX-I/O™ devices are plugged into one another on a
DIN rail.
1. Slide out the mounting tabs.
2. Align the channel on the back of the device with
the DIN rail.
3. Using a flat blade screwdriver, push in each
mounting tab until it clips onto the DIN rail.
4. Align female bus connector of an I/O module with a
male bus connector, and slide the I/O module
down over the TX-I/O island bus connector.
5. Push in each mounting tab until it clips onto the
DIN rail.
Figure 2: Connecting Devices to the TX-I/O Island Bus.
Point Wiring
See the Wiring Guidelines for TX-I/O point wiring
information.