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. . . ADDENDUM USE OF HARDWARE LINKS ON THE SECONDARY ELECTRONICS
ON
ON
OFF
OFF
1 2 2 3 3 4 4 5 5 6 6
ON
ON
OFF
OFF
1 2 2 3 3 4 4 5 5 6 6
ON
ON
OFF
OFF
1 2 2 3 3 4 4 5 5 6 6
When a digital integral display is applied to the secondary electronics, the following operation can be performed using the
hardware links located on the integral digital display:
ZERO Raise/Lower
SPAN Raise/Lower
DAMPING Raise/Lower
A label located inside the cover on the integral digital display side, helps the user in the use of the hardware links (see Fig. 5).
- 32 -
if the switch 3 is in ON position
moving the switch on the display from 'a' to 'b' and to 'a' again (see Fig. 4), and then using
zero and span local adjustment, as already explained (see SPAN Raise/Lower on the previous
pages).
moving the switch on the display from 'c' to 'd' and to 'c' again (see Fig. 4), and then using
zero and span local adjustment, as already explained (see DAMPING Raise/Lower on the
previous pages).
Fig. 4
WRITE PROTECT mode
With the switch 5 up in ON position the write protect mode is active. It is a way to
protect the device from any change:
configuration data and parameters cannot be modified.
UP/DOWN SCALE mode
The switch 6 defines the fail safe output condition in case of transmitter failure:
- In the ON position the output is Down (below 4 mA and more precisely 3,6 mA);
- In the OFF position the output is UP (above 20 mA and more precisely 21, 8 mA)
NOTE:
The message ZERO PROT or SPAN PROT appears on the integral
digital display when Write Protect Link is in Protect position.
The message ZERO DSBL or SPAN DSBL appears on the integral
digital display when ZERO and SPAN local adjustment are disable.
Zero and Span can be disabled using a HART configuration
software, so it applies only to Analog + HART version.
CAUTION
BE SURE INTERNAL
SWITCHES 1 & 2
ARE IN "0" POSITION
JUMPERS POSITION
a : SPAN ENABLE
a - b - a : SPAN R/L
c : DAMP ENABLE
c - d - c : DAMP R/L
Fig. 5
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