6 Operation
Rittal air/water heat exchanger assembly instructions 15
EN
6.1.9 System message contact (K1; floating)
The relay is normally closed. All assigned system
messages lead to the relay dropping out – and
likewise to loss of the control voltage. Terminal strip
X1 provides the connection. For contact data and
occupancy – see the wiring diagram in chapter
“4.6.5 Installing the power supply”, page 11.
K1 fault signal relay
(normally open contact/change-over contact)
– Terminal 3: NC (normally closed)
– Terminal 4: C (connection of the supply voltage to
the fault signal relay)
– Terminal 5: NO (normally open)
The NC and NO definitions refer to the de-energised
state. The switching position of the terminals chang-
es under mains voltage.
6.1.10 Programming overview of Basic controller
Fig. 20: Programming overview of Basic controller
K1
K2
K1
K2
K1 = 1 sec.
K1 = 1 sec.
SetpKiJt
K1
K2
K1
K2
K1
K2
K1
K2
K1
K2
K1
K2
= 5 sec.
= 5 sec.
K1
K2
K1
K2
ParaIeters
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