Honeywell STT850 SMARTLINE, User Manual

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Page 46
STT850 Temperature Transmitter User’s Manual
Revision 3
4. If necessary, unplug the interface connector from the Communication module. Do not
discard the connector.
5. Set the Failsafe Jumper (top jumper) to the desired position (UP or DOWN). See
Table 13 and Figure 15 for jumper positioning.
6. If applicable, re-install the Display module as follows:

Orient the display as desired.

Install the Interface Connector in the Display module such that it will mate
with the socket for the display in the Communication module.

Carefully line up the display, and snap it into place. Verify that the two tabs
on the sides of the display latch.
NOTE: Installing a Display Module into a powered transmitter may cause a temporary upset
to the loop output value.
Orient the Display for proper viewing through the end cap window.
You can rotate the meter mounting orientation in 90
o
increments.
7. Restore transmitter power if removed.
4.1.12 Write Protect Jumper on Foundation Fieldbus (FF)
On Foundation Fieldbus transmitters there is no Failsafe jumper selection but there is a Write Protect
jumper. The bottom jumper sets the Write Protect. The default setting is OFF (Un-protected).
When set to the On (Protected) position, Changed configuration parameters cannot be written to the
transmitter. When set to the OFF (Un-protected) position, Changed configuration parameters can be
written to the transmitter.
ATTENTION: Electrostatic Discharge (ESD) hazards. Observe precautions for handling
electrostatic sensitive devices.
WARNING! PERSONAL INJURY: Risk of electrical shock. Disconnect power before
proceeding. HAZARDOUS LIVE voltages greater than 30 Vrms, 42.4 Vpeak, or 60
VDC may be accessible. Failure to comply with these instructions could result in death
or serious injury.
Step Action
1
Turn OFF Transmitter power.
2
Loosen the end-cap lock, and unscrew the end cap from the Electronics side of the
Transmitter housing.
3
If applicable, carefully depress the tabs on the sides of the Display Module and pull it
off. If necessary, move the interface connector from the Communication Module to the
display module to provide the preferred orientation of the display module in the window.
4
Set the Write Protect jumper (Bottom jumper) to the desired behavior (Protected or
Unprotected). See
Table 14 Error! Reference source not found. for jumper positioning.
5
Screw on the end cap and tighten the end-cap lock.
6
Turn ON Transmitter power.