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EC500 Controller Handbook
Copyright © 2019 Eaton Corporation. All Rights Reserved.
Issue A March 2019
Page 41 of 107
When the cyclic period is over (i.e. 60min), the cyclic index increments by one, so that the index becomes 2
and time t = 1. When the index is incremented by one, then ON/OFF status of rectifier is shifted by one
position in clock wise direction as shown in fig below.
Similarly, at every cyclic period completion, the cyclic index is incremented by one and reaches its maximum
value that is equal to installed number of active rectifiers.
When cyclic index reach at its maximum value (6 in this example), the cyclic index rolls back to value one at its
next completion of cyclic period.
The advantage of the cyclic sleep sequence over linear sleep sequence is that in cyclic sleep sequence each
rectifier goes to sleep mode for their dedicated time period. This gives equal running time for all rectifiers.
For the Linear sleep sequence, the Min Active Rectifier count of rectifiers from left to right direction are always
ON.
RECTIFIER ALARMS
Alarm
Description
Where to find:
Rectifier Fail
The rectifier fail alarm is generated when Rectifier
Fail condition is provided from the rectifier
(however, if all rectifiers communicate “Rec Fail”
alarm to MCM then we get “All Rec fail” alarm on
MCM rather than “Rec Fail”)
.
Display:
Menu>Setting>Rectifier
Settings>Alarm Settings
Web:
Home>Settings>Rectifier
Settings>Alarm Settings
Multiple Rectifier
Fail
Multiple Rectifier Fail alarm is generated when one
more than one but not all rectifiers have Rectifier
Fail alarm.
All Rectifier Fail
The “Rec Curr
ent
Limit” alarm is generated by the
rectifier when the control loop switches from
constant voltage to constant current mode and
output voltage drops by 1V compared to previously
measured voltage.
Rectifier Comm.
Fail
The “Rec CAN COMM Fail” alarm is generated inside
the rectifier when the rectifier communication with
MCM is interrupted for continuous delay of 10
seconds.
Whenever “Rec CAN
Comm Fail” occurs,
rectifier re stores its default settings
–
a) Output
Voltage of 54.0V, Rectifier Current Limit of 63A,
Battery Temp Comp Factors and Values, Re-set of
previously disabled commands issued to the
rectifier.
All Rectifier Comm.
Fail
In case, if 1) Rectifier Fail condition is provided from
the individual rectifier (however, if all rectifiers
communicate “Rec Fail” alarm to MCM then we get
“All Rec fail” alarm on MCM rather than “Rec Fail”)