Stephill Generators SSDP30-70 - DSE 6110 Module User Guide
Issue 2
How to Check the Control Module "Event Log"
Example
Fig.23
IDMT Alarm
If the
IDMT Alarm
is enabled, the controller begins following the IDMT ‘curve’ when the
trip
level is passed.
If the
trip
is surpassed for an excess amount of time (set at 1 hour) the
IDMT Alarm
triggers a shutdown.
High Current Shutdown
is a latching alarm and stops the generator.
Remove the load then press the button to reset the module.
The higher the overload the faster the trip. The speed of the trip is dependent upon the fixed formula.
T = t / ((IA / IT) – 1) 2
Where:
T
is the tripping time in seconds.
IA
is the actual current of the most highly loaded line (L1 or L2 or L3).
IT
is the delayed over-current trip point.
Over 110% load would issue an immediate shutdown on the generator.
The module maintains a log of past alarms and selected status changes. Currently the module is capable of
storing the last 250 log events. This is always subject to change with module updates.
To view the
Event Log
, use the
Next
or
Previous
buttons until at the top of the screen it reads
Event Log
Fig.23, press one of either the
Instrument Scroll
buttons to view the next or last event. The
Event Log
always
contains the most recent events, along with the engine hours.
With typical settings, this allows for overload of the set to the limits of the
Typical Brushless Alternator
whereby up to 110% overload is permitted for 1 hour.
t
is the time multiplier setting and also represents the tripping time in seconds at twice full load (when IA / IT
= 2).
This setting is to provide normal running of the generator up to 100% full load. If full load is surpassed, the
Immediate Warning
alarm is triggered, the set continues to run.
The effect of an overload on the generator is that the alternator windings begin to overheat; the aim of the
IDMT Alarm
is to prevent the windings being overload (heated) too much. The amount of time that the set
can be safely overloaded is governed by how high the overload condition is.
This is event 1
Engine hours
Coolant Temp High
Shutdown
1
Event Log
196h 21m
Next and Previous
Instrument Scroll
JD/08/18
11
