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4 Design and Functions
Fig. 4-31 Load stage of stage operation
NOTICE
The switch-on points of valves 2 and 3 must always be set higher than the switch-off points of
the valves. Otherwise, the valves will switch on and off in the range in between.
Firing Rate Controller
If firing rate controller is realised by TPS inputs at BT300 or DFM300 the signals are valued
as follows:
V2
on
Switch-on point valve 2 P 528 ... P 530 Parameters 528 ... 530
V2
off
Switch-off point valve 2 S1 ... S3 Load stage 1 ... 3
V3
on
Switch-on point valve 3 IFR Internal firing rate
V3
off
Switch-off point valve 3 ZP Ignition point
Firing Rate + Firing Rate – Stage
OFF OFF 1
OFF ON 2 up to V3.5
OFF ON 1 V3.6 and higher
ON OFF 2
ON ON 3
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