Initial Setup; Voltage Mode Operation - Ametek SPS A Series Operation Manual

Operation

3.3.2 INITIAL SETUP

1. Before connecting the unit to an AC outlet, ensure that the front panel ON/OFF
power switch is in the OFF position.
2. Ensure that the Voltage and Current control knobs are fully counterclockwise.
3. Check the ANALOG CONTROL (J1) mating connector on the rear panel to verify
that pins 5 and 6 (Remote Output On/Off) are shorted together to enable the
output of the supply (see Section 3.7). This is the default configuration installed
from the factory.
4. Apply power to the AC mains input.

3.3.3 VOLTAGE MODE OPERATION

When the supply is in the Voltage mode, the output voltage of the supply
is controlled by the Voltage knob on the front panel or by the remote
voltage input. See Section 3.5. The Current knob (or remote current input)
operates as a current limit. The output voltage is regulated at the selected
value while the output current varies with the load requirements. To verify
operation in Voltage mode, follow the steps below:
1. Connect a digital voltmeter (DVM) across the rear panel positive
and negative output terminals, observing the correct polarity.
Make sure the DVM is in the dc voltage mode and the range is
adequate to handle the full-scale voltage of the power supply.
2. Rotate the Current control knob about ½ turn clockwise (this sets
the current limit at a nominal setting above 0 Amps)
3. Switch the power supply on.
4. Slowly rotate the Voltage knob clockwise and observe both the
front panel voltage display and the output of the DVM. The
minimum range should be from 0V to the maximum rated voltage
output of the supply. The front panel display and DVM readings
should track within the accuracies of the meter and the front panel
display.
5. Check that the green Voltage Mode LED is on.
6. Turn the Voltage knob and Current knob fully counterclockwise.
7. Switch the power supply off.
If Voltage mode operation did not function as indicated above, recheck
your setup and perform the check again. If the function continues to fail,
contact the factory for assistance.
3-10
AMREL SPS-A Series
M550129-01 Rev A