ABB Symphony Harmony Series Instruction page 50

Installation
Introduction
Special Handling
WBPEEUI260047A0
This section explains NTHS03 termination unit installation.
Do not proceed with operation until the steps are read, under-
stood, and performed in the order in which they appear.
Observe these steps when handling electronic circuitry:
1. Use Static Shielding Bag. Use Static Shielding Bag. Keep an assembly in its static
Use Static Shielding Bag. Use Static Shielding Bag.
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. Before opening a bag con-
Ground Bags before Opening. Ground Bags before Opening.
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. Handle assemblies by the edges;
Avoid Touching Circuitry. Avoid Touching Circuitry.
avoid touching the circuitry.
4. Avoid Partial Connection of Semiconductors. Avoid Partial Connection of Semiconductors. Verify that
Avoid Partial Connection of Semiconductors. Avoid Partial Connection of Semiconductors.
all devices connected to the module are properly grounded
before using them.
5. Ground Test Equipment. Ground Test Equipment. Ground Test Equipment. Ground Test Equipment.
6. Use an Antistatic Field Service Vacuum. Use an Antistatic Field Service Vacuum. Remove dust
Use an Antistatic Field Service Vacuum. Use an Antistatic Field Service Vacuum.
from assemblies if necessary.
7. Use a Grounded Wrist Strap. Use a Grounded Wrist Strap. Use the ABB Automation
Use a Grounded Wrist Strap. Use a Grounded Wrist Strap.
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.
Section 2
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