CRANE
CO.
280
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MIDLAND
AVE.,
STE
258,
SADDLE
BROOK,
NJ
07663
WWW.AVIDCONTROLS.COM
12/17/12
TECH-440/D.W.O. 23135
Page 42 of 55
Appendix C
Setting the Transmitter Output Fail current.
The SmartCal positioner conforms to Namur NE43 with an operating input current of 3.8 mA
to 20.5 mA. Input currents between 3.2mA and 3.6mA and above 21.0 mA are considered
outside the control range and are a current input failure.
When the input current is out of range the LCD will display a Failure message and the
transmitter output (if so equipped) will go to pre-determined current to indicate the
failed state.
Another event that causes the transmitter output current to go to a fail state is
whenever the onboard microcontroller gets reset by the internal or external watchdog
circuits.
A third event that causes the transmitter output to go to the fail current is whenever
the input current is removed or below 3.2mA.
The transmitter output fail current can be configured to go to 3.4mA or 21.1 mA by the user.
To set the desired value:
Step 1:
Remove the enclosure cover. Follow appendix B to remove the electronics cover.
Step 2:
For 3.4 mA (Low current) slide the yellow switch (or move the jumper) up towards
L
marking on the printed circuit board. Note this is the default factory position. For 22.0 mA
(High current) transmitter output slide the yellow switch (or move the jumper) down towards
H
marking on the LCD printed circuit board.
Step 3:
Replace electronic canister cover and enclosure cover.
