Honeywell WEB-600E Manual page 12

WEB-600E AND CP-600E NETWORK CONTROLLERS
Disassembling the controller:
1. Remove all power from the controller. (See previous
Warning.).
2. Remove the plastic cover. See "Removing and Replac-
ing the Cover" on page 5.
3. Remove the four Phillips head screws that secure the
metal shield, and set them aside.
4. Remove the metal shield and set it aside.
To do this, carefully pry up from the top (hole vented
side) first, then push out the other side to slip the port
holes past the port edges. Then lift the shield up and
away.
Fig. 8. Install shorting blocks across both sides of jumper block to add RS-485 bias.
Installing short blocks to add RS-485 biasing:
1. Locate the four jumper pins behind the RS-485 port,
with 2-pin shorting blocks installed on one pin each. See
Fig. 8.
2. To add biasing, remove and replace both shorting
blocks back onto the jumper pins, as shown in Fig. 8
(right).
62-0433—01
1
COVER REMOVED,
REVEALS METAL SHIELD
METAL
STANDOFFS
3
NPM6E BOARD
LIFTED AWAY
Fig. 7. Basic stages of controller disassembly.
SHORTING
BLOCKS LIFTED
AWAY
POSITION OF PRE-
INSTALLED SHORTING
BLOCKS (NO BIASING)
PHILLIPS
HEAD
SCREWS
2
METAL SHIELD
LIFTED AWAY
NPM6E
BOARD
JUMPER BLOCK FOR
RS-485 BIASING
NOTE: Be mindful of the "side clips" on the controller's
two Ethernet ports.
5. Use a 1/4" (7mm) nutdriver to unscrew the four metal
standoffs, and set them aside.
6. Carefully pry up the NPM6E board, noting that the two-
row, 50-pin connector is on the option card side. Keep
the board level as you work it loose from this connector.
7. Set the NPM6E board aside. Note the jumper block on
the base board behind the RS-485 port (see bottom of
Fig. 7).
SHORTING BLOCKS
INSTALLED ACROSS
JUMPER PINS
(BIASING ADDED)
Reassembling the controller:
1. Carefully replace the NPM6E board back onto the 50-
pin connector, with its corner mounting holes aligned on
the four lower standoffs. Press down on the connector
to fully seat the NPM6E board. See Fig. 7.
2. Refasten the four metal hex standoffs, hand tightening
with a 1/4" (7mm) nutdriver.
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M33921
M33922