Elster LCR-212 Single Phase Load Control ... - Essential Energy

UNCLASSIFIED
OPERATIONAL PROCEDURE - Elster LCR-212 Single Phase
Load Control Ripple Receiver Installation and
Use
CEOP8086
4 RECEIVER FUNCTIONS
4.1 Switching On/Off
When defining the parameters, the switch-on status can be specified separately for each
relay. The execution of switch-ON operations in the receiver can be delayed within a
maximum random delay time in the range from 1 second – 24 hours.
4.2 Restoration of Supply
This function is activated when power is restored, following programming, or when the
mains is connected for the first time. The following actions can be programmed separately
for each of the three relays:
• ON or OFF relay status
• Cyclic switching
• Switching to the relay state prevailing before failure of the mains power
• No reaction.
To avoid abrupt load swings, execution of the switching functions can be randomly delayed
within a preset maximum time. The selected delay time is identical for all three relays and
can be chosen within a range from 1 second – 24 hours.
If the receiver executes a delay when the mains power returns, then commands arriving
during this delay time are acted on and the ROS reaction of the relays addressed is
rendered inactive.
4.3 Loss of Supply
This function is activated in the event of a power failure. It is possible to set the relays to a
preselected switching position after expiry of a definable power failure bridging time of 0.5 –
1.5 seconds.
The following actions can be assigned to the relays after the failure bridging time has
elapsed:
• ON or OFF relay status
• No action
4.4 Wiping Timer
After reception of a command, the addressed relay switches to the ON position and then
independently switches to the OFF position after expiry of a specified time. It is possible to
retrigger the wiping timer function, i.e. the running timer is restarted on receipt of a
repeated command.
A delay time of 1 second – 24 hours and a random delay time can be assigned for execution
of the command.
4.5 Cyclic Switching
A cyclic switching function can be assigned to relays 1 – 3. The cyclic period T applies to all
relays and can be specified within the range of 1 second - 24 hours. The following features
can also be assigned to each cyclic switching command:
• cycle time Tk (ON duration) within the time range from 1 second – 24 hours
• number of switching cycles
• start of switching at cycle time Tk or T – Tk
22 March 2011 - Issue 3
Approved By: General Manager Technical Services
Page 9 of 17
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UNCONTROLLED COPY IF PRINTED