Honeywell EXCEL 5000 User Manual page 103

EXCEL CARE CONTROL ICONS
Parameter
Number
15
16
17
Synchronization Pulse Loss
Manual Load Shed Required
Peak Load Notification (Ideal
Curve and Extrapolation only)
Shutdown of Loads (Ideal Curve
and Extrapolation only)
switched off for the longest time is switched on at first. The load that has been
switched on for the longest time is switched off at first.
The settings of Parameters P15, P16 and P17 are transmitted to every load via the
appropriate internal user addresses ID___Rotating_P1, ID___Rotating_P2 and
ID___Rotating_P1.
The following table lists parameters used for the switching behavior of the loads.
Type Brief Description
Progr. Sequential / Rotating (0 / 1) Priority 1
Progr. Sequential / Rotating (0 / 1) Priority 2
Progr. Sequential / Rotating (0 / 1) Priority 3
The time between two synchronization pulses is measured and should not exceed
the value of the 1.03 * P10 (3% over the measurement interval). When this occurs, an
internal synchronization pulse is initiated to trigger the power calculation algorithm
and the internal user address ID___Syc_failed is set to 0 to generate an alarm
message. ID___Syc_failed remains at 0 until the next synchronization pulse is
received.
Using the Trend Function of the Excel 600-80 controllers with the internal user
address ID___Syc_failed, a missing synchronization pulse that might cause a power
peak can be recorded.
Message When all the loads are switched off, but there is still a calculated power to switch off,
the internal user address ID___Man_load_shed is set to 0 to generate an alarm
message for indicating the necessity of manual load shedding. The alarm is
canceled when the calculated power becomes a positive value.
When the measured energy (kWh) within a measurement interval exceeds 90
percent of the calculated energy limit, a positive power value is not transferred to the
output Po1/2/3 of XFM 35 and the internal user address ID___Peak_load is set to 1.
The loads XFM 36-1 that are Off read the value 1 of ID___Peak_load and do not
switch on until the peak load has diminished. An alarm message can be triggered,
when ID___Peak_load is set to 1.
This peak load function is only used for the ideal curve and extrapolation calculation
algorithms.
If the measured energy (kWh) used within a measurement interval exceeds 98% of
the calculated energy limit, a command to shed all of loads immediately is sent to all
XFM 36-1 by setting the internal user address ID___Shutdown to 1. All the loads are
switched off immediately. An alarm can be generated, whenever ID___Shutdown is
set to 1.
When the measured work is less than 98% of the work limit, the shutdown function
releases the loads and ID___Shutdown is reset to 0.
This shutdown function is also used after a power failure for a new start-up the
power control by XFM 35 and XFM 36-1 (see the Start-up After a Power Failure note
earlier in this section).
105
ALPHABETIC REFERENCE
Setting Default
Range Value Unit
0/1 0 Integer
0/1 0 Integer
0/1 0 Integer
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)