ABB Symphony Harmony Series, Инструкция, Страница: 172 / 402

WBPEEUI240751C0 5 - 1
Section 5
Installation
Introduction
This section describes I/O and auxiliary block installation and
connection for the Harmony I/O system. This instruction dis-
cusses only I/O system installation requirements. The instruc-
tion does not provide any I/O system planning information
and assumes all components have already been purchased
and are ready to be installed.
Special Handling
Observe these steps when handling electronic circuitry:
1. Use Static Shielding Bag. Use Static Shielding Bag. Use Static Shielding Bag. Use Static Shielding Bag. Keep an assembly in its static
shielding bag until ready to install it in the system. Save the
bag for future use.
2. Ground Bags before Opening. Ground Bags before Opening. Ground Bags before Opening. Ground Bags before Opening. Before opening a bag con-
taining an assembly with static sensitive devices, touch it to
the equipment housing or ground to equalize charges.
3. Avoid Touching Circuitry Avoid Touching Circuitry Avoid Touching Circuitry Avoid Touching Circuitry . Handle assemblies by the plas-
tic outer packaging; avoid touching the circuitry.
4. Ground Test Equipment Ground Test Equipment Ground Test Equipment Ground Test Equipment .
5.
Use an Antistatic Field Service Vacuum Use an Antistatic Field Service Vacuum Use an Antistatic Field Service Vacuum Use an Antistatic Field Service Vacuum
. Remove dust
from assemblies if necessary.
6. Use a Grounded Wrist Stra
p. p. p. p.
Use the ABB Automation
field static kit (part number 1948385A1 - consisting of two
wrist straps, ground cord assembly, alligator clip, and static
dissipative work surface) when working with modules. The kit
grounds a technician and the static dissipative work surface to
the same ground point to prevent damage to the circuitry by
electrostatic discharge. Connect the wrist strap to the appro-
priate grounding plug on the power supply or to an unpainted
portion of the enclosure with the alligator clip. The wrist strap
must be effectively connected to the earth grounding electrode
system through the AC safety ground.