Operation Sorensen SGI Series
3-40 M550221-01 Rev U
CAUTION!
If standard, Remote Non-Isolated Analog Interface programming is used, the
programming return (J1-6 and J1-24) is at the same potential as the negative
output terminal of the power supply (not isolated). Proper connection should be
made to signal returns with respect to input programming equipment. Improper
connection might result in ground/return loops and, as a result, internal power
supply damage might occur; output current could then flow by way of the
external connection to the J1 common (J1-6 and J1-24). Refer to Table 3–5.
REMOTE ANALOG ISOLATED INTERFACE CONTROL (OPTION)
The Remote Isolated Analog Interface control uses the same Analog Control
connector (J1) as the standard interface. This option fully isolates remote
control signals and allows control of units not connected to a common ground.
Control ground is isolated from output power (output negative terminal), which
protects against potential damage from systems with high electrical noise or
large ground loop currents.
Note:
Some standard, Non-Isolated Analog Interface programming signals
are not available with this option; see Table 3–5 for details.
CAUTION!
The Remote Isolated Analog Interface option is not intended to allow operation
of the power supply at excessive voltages. Operation of Isolated Analog
Interface signals should be at SELV safety voltage conditions to chassis
ground. Refer to Section 1.2.2 for maximum terminal voltages.
Figure 3-13. Analog Control Connector (J1) Pin-Out
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