Figure 19 Write Protection And Failsafe Direction Jumper Location - Honeywell ST 3000 User Manual

Transmitter write protection option
The ST 3000 transmitters have a transmitter security option, also known as a "write protect option," which
is jumper-selectable. When the write protect option is ordered, transmitters are shipped with a default
jumper position for read-only. This means that the transmitter's configuration database can not be
overwritten. To allow read/write access, the jumper can be moved to the read/write position. When the
write protect option is not ordered access is read/write. If you do want to change the jumper position, refer
to the procedure in Section 8. Figure 19 below shows the location of the write protect jumper on the PWA.
Printed Wiring
Assembly
Failsafe
Direction
Jumper

Figure 19 Write Protection and Failsafe Direction Jumper Location

Failure mode (Failsafe) alarm jumper
ST 3000 transmitters are shipped with a default failsafe direction of upscale. This means that the
transmitter's output will be driven upscale (maximum output) when the transmitter detects a critical status.
You can change the direction from upscale to downscale (minimum output) by cutting jumper W1 on the
transmitter's PWA. If you do want to change the jumper position, refer to the procedure in Section 8.
Figure 19 shows the location of failure mode alarm jumper on the PWA.
10/05 ST 3000 HART Transmitter Release 300 User Manual
5— Getting Started - Making Initial Checks
Write Protect
Jumper
W
R
Read and
Write
Read Only
43