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Terminal Module Connections
Each channel has four output lines; HI, LO, HS (Hi Sense), and LS (Low
Sense). When using a channel in the voltage output mode, you can use the
sense lines to increase accuracy or to compensate for long lead lengths. The
sense leads are not used in the current output mode.
Voltage and
Current Output
Connections
Figure 1-14 shows connections for three types of output. Channel 1 is
connected in the 2-wire voltage output mode, the sense leads are not used
(and the sense connections need not be made). Channel 2 is connected in
the 4-wire voltage output mode. Use this connection for the highest voltage
accuracy and to compensate for long lead lengths. Channel 3 is connected
for current output mode (sense is not used for current output).
Note The sense leads are internally disconnected for current output. External
wiring may be left connected to the sense outputs on the terminal module
with no effect.
Options A3E and A3H
Terminals
HI, HS, LO, and LS connections are shown on the diagram on page 30.
Figure 1-14. Typical Output Connections
Chapter 1 Module Setup and Installation 33