Distech Controls IO-R-34 Manual - Page 4

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Distech Controls IO-R-34 Manual

Safety Precautions

Safety Precautions
The following items are warnings of a general nature relating to the installation and start-up of the EC-BOS-8 . Be
sure to heed these warnings to prevent personal injury or equipment damage.
Warning
•
A 24Vac or 24Vdc circuit powers the IO-R-34 and EC-BOS-8. Disconnect power before installation or
servicing to prevent electrical shock or equipment damage.
•
Make all connections in accordance with national and local electrical codes. Use copper conductors
only.
•
To reduce the risk of fire or electrical shock, install in a controlled environment relatively free of
contaminants.
•
Controllers and I/O modules are only intended for use as monitoring and control devices. To prevent
data loss or equipment damage, do not use them for any other purposes.

Static Discharge Precautions

These items are cautionary notes to help prevent equipment damage or loss of data caused by static discharge.
Static charges produce voltages high enough to damage electronic components. The
Caution
•
microprocessors and associated circuitry within an IO-R-34 are sensitive to static discharge. Follow
these precautions when installing, servicing, or operating the system:
Work in a static-free area.
•
Discharge any static electricity you may have accumulated. Discharge static electricity by touching
•
a known, securely grounded object.
Do not handle the printed circuit board (PCB) without proper protection against static discharge.
•
Use a wrist strap when handling PCBs, with the wrist strap clamp secured to earth ground.
Module Connection Precautions
Do not connect more than the maximum number of IO-R-34 modules to the RS-485 port of the parent
Caution
EC-BOS controller—note that 8 is the maximum number supported in software. However, less IO-R-34
modules may be supported. See
Connect S terminal wiring as shown in
Caution
as reference ground between isolated RS-485 ports on EC-BOS-8, IO-R-16 and IO-R-34 modules.
4
"Number of Supported Expansion Modules,"
Figure 6
or communication errors may result. S terminal serves
Remote IO-R-34 Module Mounting and Wiring Guide
August 2, 2017
Precautions
page 1.