AMETEK SLM Series RevC - Manual (Page 36)

Operation Sorensen SLM-Series DC Load
3-8 M540071-01 Rev C
V SENSE : Press the LIMIT key until SEnSE appears on the display. Use any of the arrow keys
to toggle between AUTO or ON.
• In AUTO, if the external V SENSE voltage (through the BNC connection) is greater than
1V for SLM-series DC 60V modules or 3V for 250, 500V modules; the voltage
displayed on the 5-digit DVM is from the V
SENSE input. Otherwise, when the voltage
on the BNC is equal to or less than the minimum voltage, the 5-digit DVM measures
the DC input terminals of the load module.
• In V SENSE ON mode, the 5-digit voltage meter displays the voltage of V SENSE BNC
input.
LOAD ON:
Press the LIMIT key until Ld-on appears on the lower 5-digit DM display. Use the
coarse/fine adjust keys to set the LOAD ON voltage, which is displayed on the upper 5-digit DM.
The LOAD ON voltage must be higher than the LOAD OFF voltage. (If the LOAD ON voltage
is set lower than the LOAD OFF voltage, the load will reset the LOAD ON voltage equal to the
LOAD OFF voltage).
LOAD OFF: Press the LIMIT key until LdoFF appears on the lower 5-digit DM display. Use the
coarse/fine adjust keys to set the LOAD OFF voltage, which is displayed on the upper 5-digit
DM. The LOAD OFF voltage must be lower than the LOAD ON voltage. (If the LOAD OFF
voltage is set higher than the LOAD ON voltage, the load will reset the LOAD OFF voltage equal
to the LOAD ON voltage).
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. Ranges are described in the following examples:
Constant Current mode: (SLM-60-60-300 example)
Range 1 (6A) indicates low load current operating range; Range 2 (60A) indicates high load
current operating range. The detailed specifications of load current range are listed in
Table 1-1. The current range automatically changes according 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).
Constant Resistance mode:
Range 1 indicates low load resistance operating range (high resistance, low current), Range
2 indicates high load resistance operating range (low resistance, high current). The
detailed resistance range specifications are shown in Table 1-1. The resistance range
automatically changes according to the programmed load resistance.
The SLM-series electronic load will set Range 1 automatically if the programmed load
resistance is higher than the minimum load resistance of Range 1, and will set to Range 2
when the programmed load resistance is lower than the minimum load resistance of Range
1.
The normal operating mode for programming values is for the load to automatically select
low or high range (CC or CR modes only). However, in the use of the analog input, the
load can be programmed in Range 2 at all times.