User's Manual

Operation: C1SD, C1ST, and C1SL Versions
CENTRON Meter Technical Reference Guide 5-9
Last Season Registers
For a C1ST or C1SL meter, Last Season Registers are selectable in the
programming software. For every Current Season Register there is a Last Season
Register for the same quantity. Last Season registers are stored in memory when a
season change occurs. Last Season registers are designated as LS in the
programming software. Last Season Registers are selectable for display in Normal
and Alternate modes.
Operating Parameters
Programmable parameters establish the meter's configuration and define its
operation in Normal, Alternate, and Test modes (see Table 5.3). Only parameters
specific to the Test mode are displayable in Test mode. Parameters that can be
uploaded using a reading device, but cannot be displayed on the meter are
indicated with an asterisk.
Table 5.3 Programmable Parameters
Parameter Description
Display Scroll Time *
The number of seconds (1 to 15) that each item is to be
displayed before the next item appears.
Cold Load Pickup Time *(CLPU)
The number of minutes (0-255) before demand
calculations are restarted after a recognized power
outage occurs. Setting this value to zero will cause
demand calculations to start immediately following a
power outage.
Power Outage Length Prior to CLPU *
The number of minutes (0 to 255) that power must be
out for the CLPU to take effect. Defining this value as
zero will cause CLPU to be activated after any
recognized power outage.
Normal Mode Demand Interval Length
The time in minutes (1 to 60) that each demand interval
lasts before a new interval begins. Valid interval lengths
are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60 minutes.
Test Mode Demand Interval Length*
The time in minutes (1 to 60) that each Test mode
demand interval lasts before a new interval begins. Valid
interval lengths are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30,
and 60 minutes.
Normal Mode Number of Subintervals*
The interval length divided by the sub-interval length is
equal to the number of subintervals. Valid entries are
from 1 to 10 and must be evenly divisible into the
demand interval length. For block demand, the number
of subintervals is 1.
Test Mode Number of Subintervals*
The interval length divided by the sub-interval length is
equal to the number of subintervals. Valid entries are
from 1 to 10 and must be evenly divisible into the
demand interval length. For block demand, the number
of subintervals is 1.