Figure 866: Working range of the frequency matcher
If
Auto Syn mode
is set to either "Semi-automatic synchronizing mode" or
"Automatic synchronizing mode", the frequency raise or lower command pulses are
generated from the function based on the frequency difference across the CB and
governor response characteristics.
If the frequency difference (DF) is negative, the reference side frequency is greater
than the running side frequency. So the frequency matching generates frequency
raise command pulse RAISE_F.
If the frequency difference (DF) is positive, it means the reference side frequency
is lower than the running side frequency. So the frequency matching generates
frequency lower command pulse LOWER_F.
The length of the frequency raise and lower command pulses (tpf) and pulse off
interval (tsf) are calculated based on the setting
Frequency match mode
.
1MRS759142 F
Control functions
REX640
Technical Manual
1575
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