IM CA71-E
4-5
Source
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App
4.2 Sourcing DC Voltage, DC Current or SINK Current Signal
TIP
If either of the following cases applies, the protection circuit works to turn off
the output.
• The output terminals or the lead cables for source connected to the output
terminals are short-circuited or an excessive load current has flowed
through the cables when a voltage is being output.
• The output terminals or the lead cables for source connected to the output
terminals are open-circuited or an excessive load voltage has been sourced
between the output terminals when a current is being output.
4.2.2 4-20 mA Function
You can set a 4-20 mA signal in 4 mA increments.
Step 1:
Using the function selector switch, select
4-20mA
.
Step 2:
Using each pair of and output setting keys,
which correspond to each digit of a value from 4 to 20,
set the signal in a step-by-step manner.
You can set the signal in 4 mA increments or decrements in
the order 4 ↔ 8 ↔ 12 ↔ 16 ↔ 18 ↔ 20 mA.
Use the pairs of and keys for the decimals to make
fine adjustments, as the keys let you set the decimals in
normal resolution.
Pressing the
key initializes the signal setpoint to
the default value (4.00).
Step 3:
Pressing the
key causes the
indicator on
the LCD to change from
to .
The calibrator sources the preset 4-20 mA current signal
between the output terminals.
Step 4:
To turn off the output, press the
key once again.
The
appears on the LCD and the output terminals are
open-circuited.
TIP
If the signal setpoint is 3 mA or less, no step-by-step setting is possible even
if you operate the higher-order output setting keys.
