Lambda Genesys 1500W, Техническое руководство

Страница: 32 / 79

83-507-013 Rev. A
25
WARNING
OUTPUT TERMINAL GROUNDING
There is a potential shock hazard at the RS232/RS485 and the IEEE ports when
using power supplies with rated or combined voltage greater than 400V with the
Positive Output of the power supplies grounded. Do not connect the Positive out-
put to ground when using the RS232/RS485 or IEEE under the above conditions.
3.10 LOCAL AND REMOTE SENSING
The rear panel J2 sense connector is used to configure the power supply for local or remote sensing of
the Output Voltage. Refer to Fig.3-14 for sense connector location.
3.10.1 Sense wiring
3.10.2 Local sensing
The power supply is shipped with the rear panel J2 sense connector wired for local sensing of the Output
Voltage. See Table 3-4 for J2 terminals assignment. With local sensing, the Output Voltage regulation is
made at the output terminals. This method does not compensate for voltage drop on the load wires,
therefore it is recommended only for low load current applications or where the load regulation is less
critical.
Terminal Function
J2-1 Remote
positive sense (+S)
J2-2 Local positive sense. Connected internally to the positive output terminal (+LS).
J2-3 Not connected (NC)
J2-4 Local negative sense. Connected internally to the negative output terminal (-LS).
J2-5 Remote negative sense (-S).
Table 3-4: J2 terminals
3.10.3 Remote sensing
Use remote sense where the load regulation at the load end is critical. In remote sense, the power sup-
ply will compensate for voltage drop on the load wires. Refer to the power supply specifications for the
maximum voltage drop on load wires. The voltage drop is subtracted from the total voltage available at
the output. Follow the instructions below to configure the power supply for remote sensing:
WARNING
There is a potential shock hazard at the sense connector when using a power
supply with a rated Output Voltage greater than 40V. Local sense and remote
sense wires should have a minimum insulation rating equivalent or greater than
the maximum Output Voltage of the power supply. Ensure that the connections at
the load end are shielded to prevent accidental contact with hazardous voltages.
WARNING
There is a potential shock hazard at the sense point when using a power supply
with a rated Output Voltage greater than 40V. Ensure that the connections at the
load end are shielded to prevent accidental contact with hazardous voltages.
CAUTION
When using shielded sense wires, ground the shield
in one place only. The location can be the power sup-
ply chassis or one of the output terminals.
Fig.3-14: J2 Sense connector location
ON
OFF
SW1
J2