AMETEK HPD Series Operation Manual User Manual

Page 29

Section 3. Load Connection and Sensing

Grounding

Grounding

Make proper ground connections to avoid developing paths between separate ground
points. To avoid ground loops, there must be only one ground return point in a power
system. If the load itself is not grounded, ground the positive or negative output to
the supply’s chassis using a rear panel screw or the front panel ground binding post.

Local Sensing

Output voltage can be sensed from both the rear panel and the front panel output
connectors. Default local sensing regulates the voltage at the power supply output
terminal. Use remote sensing (see

“Remote Sensing” on page 19

) when the voltage

needs to be regulated at the load rather than at the power supply output terminals.

Without sense line connections, the supply regulates the voltage at the output
terminals of the power supply. For improved local sensing, connect jumpers between
the sense terminals and the output terminals. See

Figure 3.2

and

Figure 3.3

See

Figure 1.1, “Front Panel Controls”,

and

Figure 1.3, “Rear Panel”,

for sense

terminal locations on the front and rear panels.

Output

Jumpers for

Local

Sensing

WARNING
Disconnect the AC input before installing or removing jumpers.

Low Voltage Models

Two barrier strip jumpers are shipped unattached with 15 V

and 30 V models. If your application requires precisely regulated output voltage at
the rear output terminals, install the jumpers as noted below.

1. Use a flat-bladed or #2 Phillips screwdriver to loosen the four terminal screws at

the output barrier strip.

2. Slide the jumpers under the screws.

3. Tighten the screws to the barrier strip. See

Figure 3.2