AMETEK SLH Series RevC - Manual (Page 38)

Operation Sorensen SLH-Series DC High Power Electronic Load
Power:
Press the LIMIT key until the LIMIT LED is on and the “W” LED (5) is lit. The upper 5-
character display shows the upper power limit; the lower 5-character display shows the
lower power limit. Use the larger × Ø increment/decrement arrows to set the upper limit
and the smaller
↑↓ increment/decrement arrows to set the lower limit
V SENSE :
Press the LIMIT key until SEnSE appears on the display. Use the increment/decrement
keys to set AUTO or ON.
• In AUTO, if the external Vsense voltage (through the BNC connection) is greater than
1V (SLH-series DC 60V modules) or 3V (250, 500V modules), the voltage displayed
on the 5-character DVM is from the Vsense input. Otherwise, when the voltage on the
BNC is not above the minimum voltage, the 5-character DVM measures the DC input
terminals of the load module.
• In Vsense ON mode, the 5-character voltage meter displays the voltage of V-sense
BNC input.
LOAD ON:
Press the LIMIT key until Ld-on appears on the lower 5-character DM display. Use the
coarse/fine adjust keys to set the LOAD ON voltage, which is displayed on the upper 5-
character DM. The LOAD ON voltage must be higher than the LOAD OFF voltage. The
load will set the load current to zero automatically if the LOAD ON voltage is set equal to or
lower than the LOAD OFF voltage setting.
LOAD OFF:
Press the LIMIT key until LdoFF appears on the lower 5-character DM display. Use the
coarse/fine adjust keys to set the LOAD OFF voltage, which is displayed on the upper 5-
character DM. The LOAD OFF voltage must be lower than the LOAD ON voltage. The
load will set the load current to zero automatically if the LOAD OFF voltage is set equal to
or higher than the LOAD ON voltage setting.
Range Auto/Fixed Range 2:
There are two programming ranges in Constant Current and Constant Resistance modes.
Range selection can be automatic or fixed in Range 2, as set by the LIMIT key. Press the
LIMIT key until rAnGE appears on the upper 5-character display. Use the inc/dec arrows to
set AUTO or rAn2. rAn2 forces the load to Range 2 for CC and CR mode, as defined in
Table 3-6. Ranges are described in the following examples:
Example, SLH-60-60-300:
Constant Current Mode:
Range 1 (6A) indicates low load current operating range, Range 2 (60A) indicates
high load current operating range. The detailed specification of load current range
is listed on the Table 1-1. The current range changes automatically in accordance
to the programmed load current. Range 1 is selected automatically if the
programmed load current is less than the maximum current of Range 1 (6A), and
will set to Range 2 automatically when the programmed current is higher than the
maximum current of Range 1 (6A).
3-8 M540074-01 Rev C