FMS Fault Correction Parameters ( P )
Aids
P24 The network address for the respective serial interface is given here. The
Parameters 826, 827 network address in the unit's delivered state is "0”. The network address is to
be altered only where several units are polled via a BUS. If a network address
other than "0” is set, this must be noted on the unit sticker.
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P25 This may be used to set the brightness of the display. By means of this
Parameter 831 parameter the light intensity of the display can be adjusted to the ambient light
conditions. Since the power consumption of the display is quite high,
choosing a lower brightness level brings a not inconsiderable energy saving.
This also reduces the amount of heat generated by the unit. When not being
used, the unit after a time automatically switches to the lowest brightness
level.
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P26
Parameter 832 Here a time is configured in which the FMS, after the last operation
(key press etc.) reverts to the lowest brightness level. As soon as a key is
pressed or a fault appears, the unit automatically switches back to the
brightness level set. If "0” is entered in this parameter the display does not
dim down. In order to increase the life of the display, however, and to minimise
the heat generated in the unit, we recommend that this parameter be used.
The setting on delivery is 600 seconds, i.e. after 10 minutes without operation
the unit switches its brightness level back.
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P27 This serves for setting the minimum time that must elapse after a control pulse
Parameters 740 744 from a DPS output until another one occurs. The smallest value is 50 msec.
If a control element has a tendency to oscillate, stabilisation can be achieved
not only by enlarging the dead band but also by increasing this parameter.
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P29 An ignition delay in seconds during setting can be entered here. This allows
st
Parameter 759 the person commissioning the unit to observe the 1 ignition attempt at the
nd
burner or boiler end. It runs from the 2 operation of the acceptance key
(after confirming the question "Really ignite?”).
For details, see "Tips & Tricks page 69.
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P40 This is used to set the program monitoring time for the control unit. If, after
Parameter 777 starting, no ignition occurs within this period, a fault is emitted.
There is no monitoring if the parameter is set to "0”.
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P51 Pre-ignition time. This indicates how many seconds the ignition transformer is
Parameter 782 activated before opening of the pilot gas solenoid valve (or main gas).
Minimum value 2 seconds.
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P52 This parameter serves to set the stabilisation time. This parameter indicates
Parameter 783 how long between first and second safety periods the pilot burner burns on its
own (without activation of the pilot burner and with the main gas valves still
closed).
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