CiDRA SONARtrac PW VF-100 - Manual (Page 78)

20832-01 Rev 05 Page 6-12
6.3.4.2 Transmitters With Pluggable Terminal Blocks
The following figure shows the layout of the transmitter terminal strip
board. This board is divided into three sections.
The Section#1 terminal blocks are for transmitter outputs. These
signals are not certified Non-incendive field wiring.
The Section #2 terminal blocks are for external sensor inputs
(pressure and temperature). For Class I, Zone 2, ATEX rated
Transmitter Model TB8-xx-xx-xx-03 these are to be treated as non-
incendive field wiring.
The Section #3 terminal blocks are for the cable interface to the
sensor head. This consists of 12 twisted pairs of conductors plus a
cable drain wire (shield). For Class I, Zone 2, ATEX rated Transmitter
Model TB8-xx-xx-xx-03 these are to be treated as non-incendive field
wiring.
The recommended torque for the terminal screws is 4.4 to 5.3 lb
f
-inch
(0.5 to 0.6 Nm).
The recommended torque for the screws that secure the terminal
blocks to the base is 3.5 to 4.4 lb
f
-inch (0.4 to 0.5 Nm).
Figure 7 Terminal Board Layout
There is a green wire with a yellow stripe attached to a threaded post
on the base plate. The free end of this wire is stripped and must be
installed in the terminal J4-1. J4-1 is the left-most terminal of the
largest terminal plug (the plug on the lower-right of figure 7) and is
marked “S” on a yellow background. This is a redundant electrical
connection to the Protective Earth for the terminal
s marked “SHD”
which are to be used for connecting cable shields, drain wires, and
grounding tag wires from metal cable glands as specified elsewhere in
this manual.
Section #1 Section #2
Section #3