AMETEK DLM Series - Manual (Page 60)

Advanced Operation DLM-E 3kW & 4kW Series Power Supplies
Programming OVP with a 0–5k Ohm Resistance
1. Set S1-3, the rear panel DIP Switch, UP, in the open position for 0–5 k ohm
programming range.
2. Connect the external programming source between pins 3 (OVP programming
input/positive) and 12 (return). Varying the programming voltage from zero to maximum
will cause the OVP setting to vary from approximately 0 to 110% of the model rating.
3. Connect pins 3 (OVP programming input/positive) and 16 (1mA current source for OVP
control) of J3 to the counter–clockwise end of the potentiometer and connect the tap and
clockwise end of the potentiometer to pin 12 (return). Adjusting the resistance from zero
to maximum will vary the output voltage from approximately 0 to 110% of the model
rating.
4. Turn the power supply ON and adjust the external voltage programming input to zero.
5. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the
external OVP programming source voltage. By pressing the OVP PREVIEW button and
looking at the front panel voltmeter setting, the external control can be adjusted to the
desired value.
6. Slowly increase the external output voltage programming signal until the red OVP LED
lights and the power supply shuts down.
S1 Switch Settings
S1-3 OPEN = 0–5K
Figure 4–11. Remote Programming of OVP with a 0–5k ohm Resistance
4-16 M362000-01 Rev E