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Glossary ctd. (4)
Term
[Index] Explanation
Power section
100 That part of the unit that makes the energy conversion from the curent supplied into steam output
Load shedding
101 Load shedding can be set up by assigning the
Function_digital_input [98] "Power limitation" to the
Digital input [97]
. When the
Digital input [97]
is then then connected to an
Auxilliary voltage [105]
by
means of a
Switch (NO) [102]
,
Max. steam output [43]
is reduced by the percentage set up in the "
∆
power limitation" parameter. After withdrawel of the voltage normal operation is reestablished.
Switch (NO)
102 Electrical switch with
N
ormally
O
pen contacts
Steam_down_time_min.
103 Steam-down time between fillings is continously monitored. If the minimum steam-down time set falls below
the value set up several times in a row, an indication exits that the cylinder water conductivity has risen to an
extend non tolerable. For conductivity reduction,
Dilution [23]
is triggered (only
ELDB [77]
).
Slave_hysteresis
104 In order to avoid unnecessary frequent switching on and off of
Slave [94]
units (as required by the output
demand) or an oscillating tendency, switching is made with a hysteresis.
Example: One Master controls one Slave. Switching on the slave without hysteresis would occur at 50%
output demand, same situation for switching the slave off. With a 1% hysteresis, switching on the slave is at
51% output demand wheras switching off is at 49%. By this, instabiliy of the switch-off point is
accomplished.
Auxiliary voltage
105 DC voltage in the range of 5…20V for activating the
Digital input [97]
via a
Pushbutton switch [106]
or a
Switch [102]
. +20 VDC is available on Pin 3 of ST08 (mainboard) or ST05 (relay board). The auxiliary
voltage is required to switch the
Digital_input [97]
on the mainboard or a relay board in order to trigger the
function defined by setting the
Function_digital_input [98]
(e.g. switch on ECO mode).
Push button
106 Electrical switch for momentary action
Fully automatic deadleg flushing
107 For "fully automatic"
Deadleg flushing [27]
, an additional relay must be implementes that allows for
switching the intake solenoid valve even when the
Interlock (safety) system [11]
is open. Control of this
additional relay is either by the base relay on the mainboard or a coupling relay. The relay used for this
function must have "68" as the assignment.
