Page 68
Functions
5-4
Basic relay
allocation
(contd.)
(60) Blow-down off: Relay is energized when not pump-
ing.
(61) Blow-down on: Relay is energized when pumping
takes place.
(62) Partial blow-down: Relay is energized when a partial
blow-down is run.
(63) Full blow-down: Relay is energized when a full blow-
down is run.
(66) Max. level: Relay is energized when the max. allow-
able water level is overrun.
(67) Stand-by blow down: Relay is energized when a
stand-by blow-down is run.
(68) Dead leg blow-down: Relay is energized when a
dead leg blow-down is run.
(69) Start-up blow-down: relay is energized when a start-
up blow-down is run.
(270) Collective Service: Relay is energized when a ser-
vice message status („Service steam amount“, „Service
main contactor K1 switching cycles“) is active.
5-5
Relay_K20
allocation
Defines logical function of the optional relay K20 (in the
same way as 5-4 does for the basic relay). Factory pre-
set is „270“ (Collective service). Connectionis to the
ST10.1 plug on the mainboard.
Exception:
For the units SLH40 and SLH50 the
relay_K20 is used as standard to switch the level 2 (i.e.
the single-level control of 3 heaters).. The relay assign-
ment is set to "120" at the factory and cannot be
changed.
5-6
Modbus
address
The control electronic may optionally be equipped with a
RS485 serial interface for running data communication
with the Modbus RTU protocol. 5-6 then holds the Mod-
bus RTU address.
5-7
Relay_K21
allocation
Defines logical function of the optional relay K21 (in the
same way as 5-4 does for the basic relay). Factory pre-
set is „270“ (Collective service). Connectionis to the
ST10.2 plug on the mainboard.
Group
Par.
Denomina-
tion
Description
