Hitachi hitachi low current trip function for pumping applications Heat Pump User Manual


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SJ300 Setup
Since the intelligent outputs are solid state and share a common connection internally,
the SJ300 setup is slightly different. Table 2 shows the SJ300 setup. The wiring diagram
is below. Instead of using a logical AND of the two output signals, we use logical OR,
which is achieved by paralleling the outputs as shown. We then invert the two output
signals ([OL] and [FA1]) and invert the [EXT] input versus the setup for L300P. The
resulting Boolean logic provides the identical functionality.
Table 2
Parameter C005 C015 C021 C022 C031 C032 C040 C041
Value
12 01 01 03 01 00 00
Desired
Low Current
Threshold
Level (A)*
WIRING DIAGRAM
Outputs
Inputs
12
11
COM
5
CM1
2
1
3
4
SJ300
Hitachi America, Ltd.
© 2004 Hitachi America, Ltd.
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