AMETEK SLM Series RevC - Manual (Page 35)

Sorensen SLM-Series DC Load Operation
M540071-01 Rev C 3-7
3.2 Operation – Setup and OCP/OPP Tests
The SLM series DC loads have six operating modes: Constant Current (CC), Constant Voltage (CV),
Constant Power (CP), Constant Resistance (CR), all selected with the MODE key, Shorts mode,
selected with the SHORT key, and Dynamic mode, selected with the DYN/STA key. (Dynamic mode
allows controlled current transitions between two states in CC or CP modes only).
Note:
For the remainder of this Section, the bolded number within parentheses following a front panel
key name, refers to the labels in Figure 3-1.
3.2.1 Overview of Front Panel Operation
Limits must be set up before selecting a mode in which to operate. The LIMIT key (12) is used to set
the Go/No Go upper and lower limits for voltage, for current and for power. It is also used to set the
system configuration for V-sense control, for Load ON voltage and for Load OFF voltage.
After setting up the initial LIMIT parameters (see Section 3.2.2), use the MODE key (3) to enter CC, CR,
CV, or CP mode and set up the applicable parameters in each mode. Use the HIGH and LOW keys
(16) to set the load level values for each mode. If programming values in Dynamic (10) mode (again,
for CC and CP modes only), the T
HIGH , T LOW (14), and RISE, FALL (15) values must also be set.
Then, select the high or low programmed Load level by pressing the LEVEL key (9), and last, press the
LOAD key (8) to apply load to the input terminals.
3.2.2 Initial Setup (LIMIT Key)
Pass / Fail Limits, Go/No GO Limits
If pass/fail limits are not desired, skip this step. This step is to set the upper and lower limit values
within which the inputs must fall in order to pass the test. (Pass is indicated when the NG register
is set to 0 and the NG LED (2) remains not lit). If the inputs fall outside those values, i.e., they are
less than the lower limit value or higher than the upper limit value, the test is a “fail” or No Go. (Fail
is indicated when the NG register is set to 1 and the NG LED is lit).
Voltage:
Press the LIMIT key until its corresponding ON LED (12) is lit and the “V” LED (5) is lit.
The upper 5-digit display shows the upper voltage limit; the lower 5-digit display shows the
lower voltage limit. Use the larger × Ø increment/decrement arrows to set the upper limit and
the smaller
↑↓ increment/decrement arrows to set the lower limit.
Current: Press the LIMIT key until its corresponding ON LED is lit and the “A” LED (5) is lit.
The upper 5-digit display shows the upper current limit; the lower 5-digit display shows the lower
current limit. Use the larger × Ø increment/decrement arrows to set the upper limit and the
smaller
↑↓ increment/decrement arrows to set the lower limit.
Power: Press the LIMIT key until its corresponding ON LED is lit and the “W” LED (5) is lit.
The upper 5-digit display shows the upper power limit; the lower 5-digit 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