HygroMatik FLE TSPA Series, Руководство пользователя

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Page 88
Continuation of glossary (4)
Term [Index] Explanation
Dosage time 85 The duration of an essence dose.
Virtual interlock (safety) system 86 If control via

Communication interface [13]
was selected, software is used to place a logical switch in
series with the hardware interlock (safety) system. This switch can be opened and closed via

Software
commands [12]
. If the hardware interlock (safety) system is closed and the switch is opened via software
control command, steam production is stopped and the unit is placed in "Remote switch-off" status.
Supply voltage 89 The units are designed for connection to supply voltage ranges (e.g. 380 to 415 VAC in case of a 400 VAC
unit, s. name plate)
Unit name 90 Here, "Plant 1" is entered by default. The entry in the field can be changed according to customer
requirements using a HygroMatik service tool.
Weekly timer 91 The timer makes it possible to program 2 periods per day of the week, each defined by a start time and a
end time. The temperature set value and an essence dose can be preset for each time period.
Temperature threshold value 92 If the specified threshold value has been reached, the relay which is intended for this purpose is energised.
The assignment of this relay must be "256 = Message_Temp.-threshold_value".
Recording 93 The control can record 10 data sets internally on a rolling basis. Snapshots of the unit status are carried out
at intervals of 10 s, which can be helpful for troubleshooting. When the storage space is filled, a new set of
data overrides the oldest entry. The complete record can be saved to a USB stick with NTFS formatting.
Warning message 95 The electrodes (for the

ELDB [77])
, the blow-down pump and the solenoid valves are items with limited
service life due to wear and tear. They must be checked during maintenance works and replaced if required.
To avoid unplanned maintenance requirements, alerts can be set up for the respective items, which are
activated when a defined state of wear is reached. The criteria for the alerts to be triggered can be defined in
three stages each through the sensitivity setting.
PI
controller 96 Internal controller with control characteristics which contain a
P
roportional part and an
I
ntergal part. Both
parts can be changed as parameters.
Digital input 97 Digital input on the mainboard and on the relay boards for switching functions. A logical meaning (e.g. timer
start) is assigned to the digital input via the

Digital_input_function [98]
parameter. The digital input must be
wired on-site in accordance with its use, e.g. with a

Pushbutton [106]
or a

Switch (NO) [102]
against
the 20 VDC on terminal 8 on the mainboard terminal strip ST08 or the terminal strip ST05 on the other
available boards. When the
20 VDC voltage is applied (short-term via a 
Pushbutton [106]
or permanent
via a

Switch (NO) [102
] ), as required in accordance with

Digital_input_function [98]
parameter setting),
the switching function is carried out.
Digital_input_function 98 Determines which function will be executed if the

Digital input [97]
on the mainboard or one of the relay
boards is loaded externally with level "1" (= 12 V).
Nominal power output 99 The steam output range given on the name plate derived from the allowable range of suply voltages
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.
Pushbutton 106 Electrical switch the contacts of which remain closed as long as the pushbutton is pushed
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.