Configuration
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38
GenStar MPPT
4.0
ESC Schedules (timing entered in Setup OR Installer\Schedules)
Use the
Schedules
menu or Custom ESC Cards to specify a schedule to be implemented. Each
schedule's details come from the settings made in the
Schedules
Sections.
By specifying various schedules, a broad schedule structure can be achieved. Each schedule's control
criteria comes from conditions entered in Emergency Charging, Start Charging (1, 2, and 3), Pause
Charging, or Prohibit Charging Screens.
Conditions - General
Define conditions for each schedule. Multiple conditions, and up to two groups of conditions can be
assigned to control the relay.
After schedules have been defined, add conditions or groups of conditions, and combine logically
with, "any" (OR), or, "all" (AND), syntax, if desired. There can be up to four conditions per schedule
defined in up to two groups. The logical combination of conditions and groups comprises the
governing criteria.
The time delay is the duration between a condition being met, and the control action occurring (if
more than one condition, the longest delay will apply). The main purpose of the time delay, is to have
some certainty that conditions are not just temporary, and will not, "falsely", trigger the control.
GenStar MPPT summary lines for Start and Stop conditions appear after each condition or group. The lines
will textually describe the control conditions.
The Start and Stop conditions reside within a given schedule. If a schedule is activated because a Start
condition is met, the operation will only cease if, and when, the paired Stop condition is met.
Figure 4-2. External Source Control Timing
(Intervals are met when elapsed time equals required time)
EXTERNAL SOURCE CONTROLS TIMING SEQUENCE EXAMPLE
Minimum Time Off (Mins)
Minimum Run-time (Mins)
Maximum Run-time (Mins)
Time Interval:
Required-Elapsed
Time
DURATION (Secs or Mins)
START
MIN. RUN
TIMER
START
MAX. RUN
TIMER
START
GEN
STOP
GEN
2) MANUAL
- External Source starting can be triggered manually via Command or Soft-key.
Once a ReadyRelay has been designated as a Command/Schedule signal, use Commands or Soft-
key - see Section 4.2.7 #5 and 4.2.9 - to start or stop an external source manually.
3) CUSTOM
- External Source Control can be triggered automatically using Custom ESCM and
ESC Start-Stop assigned relay, and then programming schedules and control criteria -- program in
LiveView Installer Setup\ESC. When a custom ESCM is chosen, a Custom ESC setup screen with four
(4) scheduling-control criteria options will appear below. Choose a desired scheduling option by
hovering/highlighting and clicking on one of the four lines.
• select a preset control criteria option
• select customized control criteria, and values, as desired
Once a ReadyRelay has been designated as External Source control signal, ESC can be used to start
or stop the external source automatically. Enter timing in Installer Setup\Schedule\Start Charging 1,
2 or 3, for example, or go to Installer Set-up\ESC\ESCM\Custom.
Figure 4-3, ESC Setup Sequence, illustrates the method for creating an custom External Source
Control configuration.
ESC PROGRAMMING
Opening ESC Screen:
The ESC signals will populate based on ReadyRelay assignments to control ESC. The opening ESC
screen displays drop-down menus for ESC timing controls, mode and schedules (Custom Mode).
The left column in Figure 4-2 below, lists the
ESC Timing Controls
that can be set for the operation
of an External Source Control input.
Minimum Time Off
sets a requirement of time elapsed
from turning off, before the external source can start again.
Minimum Run-time
sets the
least duration the external source can run.
Maximum Run-time
sets the greatest duration the
external source can run.
Each setting in the programmed timing control sequence will be checked
and satisfied before the external source will start or stop.
CAUTION:
For the relays to allow Generator operation, maximum run-time (ESC\Timing Controls) is
disabled by default. Ensure the Maximum Run Time (if enabled) is long enough to meet or
exceed any scheduled duration.
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