User Instructions - Logix® 520MD+ Series Digital Positioner
FCD LGENIM0105-00
© Flowserve Corporation
38
Field Trial Version – Printed October 28, 2011
16.3 Replacing the LCD Board
The LCD board connects to the main board providing
additional functionality at the local user interface.
Removal
1
Make sure the valve is bypassed or in a safe
condition.
2
Disconnect power to the positioner.
3
Remove the inner cover by removing the 6 inner
cover retaining screws.
4
Unscrew the 4 screws holding the LCD Board in
place.
5
Gently pry the locking feature on the connector with a
small flat screwdriver and separate the connector
from the main board. Be careful not to pull the cable,
as this may cause damage to the cable.
Installation
1
Connect the LCD Board to the Main Board using the
cable. Ensure the connector’s locking features
engage.
2
Align the LCD Board with the 4 stand-offs on the main
board.
3
Screw the LCD Board to the 4 stand-offs.
4
Replace the Inner Cover.
NOTE: The LCD backlight may change brightness
during use. This is normal. The backlight uses any
residual power not used by other functions of the circuitry.
When current supply is low (4mA) the light will appear
darker. When current supply is high (20mA) the light will
appear brighter.
Figure 24: Inner Cover
Figure 25: LCD
16.4 Replacing an Auxiliary Card
Up to two auxiliary cards can be installed at a time. Each
communicates independently to the main processor,
though only one cable is used to connect both cards.
Removal
1
Make sure the valve is bypassed or in a safe
condition.
2
Disconnect the power to the positioner.
3
Remove the main cover.
4
Disconnect the two wire connection from the side of
the Card.
5
Unscrew and remove the auxiliary card clips.
6
Gently slide the card from the slot. (If two cards are
present, remove both cards from the slots.)
7
Gently pry the locking feature on the connector with a
small flat screwdriver and separate the connector
from the card. Be careful not to pull the cable, as this
may cause damage to the cable.
8
Replace the second card (if present) back into the
slot.
9
Replace the auxiliary card clips.
Installation
1
Make sure the valve is bypassed or in a safe
condition.
2
Disconnect the power to the unit.
3
Remove the main cover.
4
Unscrew and remove the auxiliary card clips.
5
If a card is present, gently slide the card from the slot
to access the internal connector.
6
Connect the card to the main board using the internal
connector cable. Ensure the connector’s locking
features engage.
7
Gently slide the card(s) into the slot(s).
CAUTION: Ensure proper circuitry is used before
connecting cables to the auxiliary card. See section 7
ELECTRICAL CONNECTIONS for more information.
8
Route the external cable through the electrical conduit
ports in the base and connect the external cable to
the auxiliary card. See Figure 21: Multi-Function
Card.
9
Replace the auxiliary card clip.
10
Reinstall the main cover.
Figure 26: Auxiliary Card
Auxiliary
Card Clips
Auxiliary Card
Terminals
+ -
LCD
Screws
Inner
Cover
Screws
Inner
Cover
Screws
Содержание Logix 520MD+
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