Specifications

REMOTE SENSE (PD-A & PD-E MODELS > 600W)
In constant voltage mode (CV), the output is locally strapped for local sensing (normal
operation); an unavoidable voltage drop is incurred in the load leads, which adds to its
voltage regulation. By connecting the supply for remote sensing, as shown in Figure 5.7,
voltage is sensed at the load rather than at the output terminals. This allows the supply to
automatically compensate for voltage drops in the load leads and improve regulation. In
remote sensing, the VOUT? Query and the front panel
meter monitor load voltage at the
sensing points.
In remote sensing, the OVP circuit makes measurements at the load sense points. The
voltage sensed by the OVP circuit could be significantly higher than the voltage being
regulated at the load. Therefore, set OVP threshold voltage accordingly.
REMOTE SENSE CONFIGURATION (PD-A & PD-E MODELS > 600W)
Turn off the power supply before making any connections on the rear panel terminal block.
Configure the unit for remote sensing by first disconnecting the jumper wires between the
sense and load terminals. Connect the load and sense leads to the load as in Figure 5.73.
Keep in mind that sense and load leads should be as short as possible. Additionally, the
sense leads resistance should be no greater than 0.5 ohm/lead, and the voltage drop over the
load leads should be no greater than 2.0V/lead.
FIGURE 5.7 REMOTE SENSE CONFIGURATION (Single Channel Supply)
- +
LOAD
CAUTION
5-27