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Functions
5-4
Basic relay
allocation
(contd.)
(37) HyCool: Relay is energised for switching on
HyCool-function solenoid valve.
(60) Blow-down off: Relay is energised when not
pumping.
(61) Blow-down on: Relay is energised when pump-
ing takes place.
(62) Partial blow-down: Relay is energised when a
partial blow-down is run.
(63) Full blow-down: Relay is energised when a full
blow-down is run.
(66) Max. level: Relay is energised when the max.
allowable water level is overrun.
(67) Stand-by blow down: Relay is energised when
a stand-by blow-down is run.
(68) Dead leg blow-down: Relay is energised when
a dead leg blow-down is run.
(69) Start-up blow-down: relay is energised when a
start-up blow-down is run.
(270) Collective Service: Relay is energised when a
service message status („Service steam amount“,
„Service main contactor K1 switching cycles“) is
active.
5-5
Relay_K20
allocation
(connected to
the ST10.1
connector on
the main-
board)
Defines logical function of the optional relay K20 (in
the same way as 5-4 does for the basic relay). Fac-
tory preset is „270“ (Collective service).
Exemption:
In the SLH40 and SLH50 units
Relay_K20 is used ex-factory for switching stage 2
(i.e. the 1-step control of 3 heater elements). Relay
allocation is then „120“ ex-factory and can not be
changed.
5-6
Modbus
address
The control electronic may optionally be equipped
with a RS485 serial interface for running data com-
munication with the Modbus RTU protocol. 5-6 then
holds the Modbus RTU address.
5-7
Relay_K21
allocation
(connected to
the ST10.1
connector on
the main-
board)
Defines logical function of the optional relay K21 (in
the same way as 5-4 does for the basic relay). Fac-
tory preset is „270“ (Collective service).
Group
Par.
Denomina-
tion
Description
