Table 37 Changing Default Failsafe Direction Or Write Protect Jumper - Honeywell ST 3000 User Manual

Table 37 Changing Default Failsafe Direction or Write Protect Jumper

Step
1 Turn OFF transmitter power. Loosen end-cap lock and unscrew end cap from electronics side
of transmitter housing.
2 If equipped with a local smart meter, carefully turn smart meter counterclockwise to remove it
from PWA mounting bracket and unplug cable from connector on back of meter assembly.
3 Loosen two retaining screws and carefully pull mounting bracket and PWA from housing.
Using the retaining clip, unplug flex tape connector and 2-wire power connector from PWA,
and remove PWA. See figure.
ATTENTION
The PWA board has components on both sides. The failsafe and write protect jumpers are
located on the side with the most components, which is also the same side as the flex tape
and power connector pins.
4 With the PWA component side (from which you unplugged the flex tape and power
connectors) facing you and referring to Figure 36, locate
• Failsafe jumper (W1).
If you want to change the failsafe action from upscale to downscale, cut jumper in half with a
small wire cutter.
Write protect jumper (W2).
•
If you want to change read and write access to read only, move jumper to the R position.
Reverse steps 2 and 3 to reassemble mounting bracket and PWA in transmitter housing.
5
ATTENTION
Be sure to orient local smart meter for proper viewing through end-cap window. You can rotate
the meter mounting orientation in 90 degree increments.
6 We recommend that you lubricate end-cap O-ring with silicon grease such as Dow Corning
#33 or equivalent before you replace end cap.
7 Turn ON transmitter power.
10/05
8— Operation - Changing Default Failsafe Direction and Write Protect Jumpers
Connectors
Retaining Clip
ST 3000 HART Transmitter Release 300 User Manual
Action
Electronics
PWA
Housing
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