If this protective function is triggered, the display indicates "Speed/freq. mismatch" and
the logical command variable "05.07" will be enabled.
Speed/frequency mismatch (n/f mismatch) is carried out if:
1. A MPU is connected to the control and parameter "Speed pickup" (parameter
), is configured On.
2. The speed is measured via ECU/J1939.
The following is valid:
The measurement via Pickup is enabled (On):
Mismatch monitoring is carried out using the engine speed from the Pickup and the
generator frequency. If the speed/frequency mismatch or the LogicsManager is enabled
and the frequency is outside of the configured limit, an alarm will be issued.
The measurement via Pickup is disabled (Off):
Mismatch monitoring is carried out using the generator frequency and the
LogicsManager. If the LogicsManager output is enabled and the frequency is outside of
the configured limit, an alarm will be issued.
ID
Parameter
CL
Setting range
[Default]
Description
2450
Monitoring
2
[On]
Monitoring of the speed/
frequency/LogicsManager
mismatch (n/f/LM mismatch) is
carried out according to the
following parameters.
Off
Monitoring is disabled.
2454
Speed/frequency
mismatch limit
2
1.5 to 8.5 Hz
[5.0 Hz]
The frequency mismatch that is to
be monitored is defined here.
If the monitored frequency
mismatch reaches or exceeds this
value for at least the delay time
without interruption, the action
specified by the alarm class is
initiated.
Notes
The LogicsManager is monitored
with respect to his status.
2455
Delay
2
1 to 99 s
[1 s]
If the monitored frequency
mismatch exceeds the threshold
value for the delay time
configured here, an alarm will be
issued.
Notes
If the monitored frequency
mismatch falls below the
threshold (minus the hysteresis)
472
easYgen-3000XT Series
B37574
4 Configuration
4.5.2.3 Engine/Generator Speed Detection
Released