YSI 5500D-1 - Manual (Page 22)

YSI 5X00
43
YSI 5X00
42
Accessing the I/O Board
The I/O board is accessible when the 5X00 front panel is removed. The letters on
the metal plate, which is attached to the lower board assembly, identify ground wire
termination locations and pluggable terminal strip locations on the I/O board. Letters
on the metal plate correspond to the wiring diagram located on the inside of the top
panel - figure 3.14. A ribbon cable connects the display board (mounted in the top
panel) to the I/O board. When the 5X00 top panel is removed, a lanyard protects
against stress on the ribbon cable. See Open Top Panel to Access I/O Board - page 42.
Figure 3.14
Open Front Panel to Access I/O Board
WARNING: Disconnect external power to the unit before doing any wiring.
AVERTISSEMENT : déconnectez l’alimentation externe de l’unité avant d’effectuer
un câblage quelconque.
1. Loosen the 4 mounting screws connecting the front panel to back enclosure.
Captive screws remain in front panel after loosening.
2. Carefully lift the 5X00 front panel from the back enclosure. The front
panel should be placed to the left of enclosure. Allow the lanyard to hold
the weight of the front panel. The rubber gasket seated in the front panel
should remain in the front panel lid.
Close Front Panel
1. Verify all installed components and peripheral equipment have secure
connections and that there are no bare wires that could cause a short inside
the enclosure.
2. Tighten bulkhead fittings after connecting all 5X00 wiring. (Hand tighten
fittings around rubber grommet. Tighten bulkhead fittings into 5X00 en-
closure with wrench being careful to not overtighten.)
3. Follow information in Sealants, Desiccants and Securing the Monitor Section
- page 71 to safeguard against damage to internal electronic components.
4. Make certain the gasket in front panel lid is in place and not twisted or
damaged.
5. Replace front panel making sure that ribbon cable is not trapped in the gasket
channel before inserting mounting screws.
6. Tighten mounting screws, making sure not to cross thread. The screws are
stainless steel, and the receiving threads are brass. Do not over-tighten!
WARNING: The 5X00 utilizes sensitive solid-state devices that can be damaged
by static shock. Installers must observe accepted ESD (Electro-Static Discharge)
procedures while connecting cabling to the 5X00 I/O plate or to any other internal
component or damage may result.
AVERTISSEMENT : le modèle 5X00 utilise des appareils transistorisés sensibles
pouvant être endommagés par des décharges d’électricité statique. Les installateurs
doivent observer les procédures de protection acceptées contre les décharges
électrostatiques lors du câblage à la carte d’E/S du modèle 5X00 ou à tout autre
composant interne afin d’éviter tout risque de dommage.
Installation and Wiring Installation and Wiring