© RLS Wacon analytics GmbH +49 (0)5121 281260
July 2022
Subject to
change without notice
Pag
e
25
Electrical installation
RELAY 4 (Relay 4): Indication of reagent level or control of accessories (analysis delay)
Terminal designation
Description
Connection
23 COM
Relay 4 COM
common connection
see page 9
"Load capacity
24 NC
Relay 4 NC
normally closed
25 NO
Relay 4 NO
de-energised open
Relay 4 Reagent level function:
If the reagent level has fallen below 10 %, the reagent level warning is activated. Alternatively, the
function can also be used on relay 2.
If the level of the reagent bottle is above 10 %, relay 4 is de-energised and establishes a connection
from COM to NC. In addition, the R4 symbol is not marked in the display.
If the level falls below 10 %, relay 4 is energised and establishes a connection from COM to NO. In
addition, the R4 symbol is highlighted in black in the display.
Control accessories (analysis delay)
Alternatively, relay 4 can be programmed to the analysis function with optional delay to control the
cooling water valve sample cooler, bypass valve or feed pump. The switching state of the relay is
shown in the display as R4.
Note on analysis delay
The start of the analysis is delayed. The relay switches already before
Analysis start for the set delay time + analysis duration of
COM to NO around cooling water valves of sample coolers or pumps
to be able to control it.
After the delay time has elapsed, the solenoid valve on the
Sycon and the analysis begins. The relay continues to operate for the
duration of the
Analysis switched.
For more information, see page 36.
