Alpha Technologies Cordex Controller Ver.2.0 - Manual (Page 40)

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Alpha Technologies Ltd. 034-136-C0 Rev B WC
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6.3.2.15 Module Start Delay
This menu item controls the stagger-start timer for all connected rectifiers.
With start delay, rectifiers start up in a time-delayed sequence. This prevents excessive loading
of the AC source. For example, setting a start delay time of 5 seconds will cause rectifier#1 to
start at 1 second, rectifier#2 at 5 seconds, rectifier#3 at 10 seconds, etc. In the case where the
start delay exceeds the maximum range, the next rectifier in sequence will start its delay at zero
and increment again by the value specified in this menu item.
When the rectifier Module Start Delay is set to 0 s, all the rectifiers start with a 0 s delay.
6.3.2.16 System Start Delay
This menu item controls the amount of time, in seconds, before the stagger-start timer
commences, see 6.3.2.15 above.
6.3.2.17 Soft Start Ramp Rate (Cordex rectifiers only)
This menu item enables the Supervisor to select the soft start ramp rate (normal or fast).
Current limit ramps up at about 12%/s during normal soft start and 33%/s during fast.
For systems without batteries, select the Fast setting for the Soft Start Ramp Rate.
6.3.2.18 Temp Display Scale (Pathfinder rectifiers w/LCD only)
This menu item enables the Supervisor to select the temperature display scale (Celsius or
Fahrenheit).
6.3.2.19 Check to Enable
This menu item enables the Supervisor to toggle (enable or disable) the following list of items:
 CL and PL Alarm
 Remote Shutdown (Cordex rectifiers only; affects operation of Power Save, see below)
 Local Access Alarm (Pathfinder rectifiers w/LCD only)
 Ramp Test (Cordex rectifiers only)
6.3.3 Power Save
This feature will enable the Supervisor to improve operational efficiency when conditions warrant by running only
the necessary number of rectifiers. The remote shutdown setting (enable or disable) affects correct operation of
the Power Save feature. See also 3.5 for more details.
6.3.3.1 Enable
This menu item enables the Supervisor to control the CXC’s Power Save feature.
6.3.3.2 Redundant Rectifiers
This menu item enables the Supervisor to specify the number of extra rectifiers to turn on.
6.3.3.3 Max (Maximum) Power Usage
This menu item enables the Supervisor to specify the percentage (of maximum power usage)
per rectifier module used in the computation of the Power Save feature. This works to avoid
rectifiers operating continuously at greater than the set limit (i.e. 95%) and going into current
limit frequently due to load surges or power limit conditions; such as, low line voltage or high
temperature.