Setting The Ramp - Advanced Energy Pinnacle User Manual

Pinnacle™ 20 kW
3. Press ENTER to accept and exit.

Setting the Ramp

Use this option to ramp the output to a process setpoint. This option allows you to
enable the feature, set a ramp start setpoint percentage, and set a ramp time. The ramp
time is set in 10 ms increments. The minimum ramp time is 0.05 seconds. The
maximum ramp time is 600.00 seconds.
Note: If your unit has the 100 ms ramp feature enabled, the range is 0.5 seconds to
6000.0 seconds.
Ramping, recipes, and TCC modes are mutually exclusive. The out-of-setpoint timer
is disabled while output is ramping. The following equation is used to determine if the
ramp is achievable by the processor:
• (setpoint - start_setpoint / ramp steps (in 10 ms increments)) = delta_setpoint
The start_setpoint is equal to:
• (truncation)((setpoint * ramp_start_setpoint_percentage) / 100).
Note: Because this calculation does not allow a fractional portion, the ramp will be
more accurate with a greater separation between start and end setpoints.
Note: If you want to allow the ramp, make sure (delta_setpoint * 65535) > 100.
If the ramp is not achievable by the processor, error messages will flash on the
display. However, output will turn on and the output will step directly to the requested
setpoint.
Note: In current regulation there are two implied decimal places thus 1000 =
10.00amps.
Note: The setpoint source must be set to internal to run a ramp. See "Setting the
Program Source" on page 4-29 for more information.
PROCESS → CONTROL → RAMP
To enable ramp mode, follow these steps:
1. Press PROCESS → CONTROL → RAMP → ENABLE.
2. Rotate the MODIFY knob to select Yes or No to enable or disable ramp mode.
3. Press ENTER to accept and exit.
To select the ramp starting point (a percentage of the setpoint to begin ramping):
1. Press PROCESS → CONTROL → RAMP → START_PT.
2. Rotate the MODIFY knob to select a percent.
3. Press ENTER to accept and exit.
5702156-E I/O Communication and Control 4-45