Connecting The Signal Relays - Grundfos CUE Series Installation And Operating Instructions Manual

The reference potential, GND, for RS-485 (Y) communication
must be connected to terminal 61.
If more than one CUE unit is connected to a GENIbus network,
the termination contact of the last CUE must be set to "ON"
(termination of the RS-485 port).
The factory setting of the termination contact is "OFF"
(not terminated).
Remove the control panel to set the contact. See fig. 29.
Fig. 29 Setting the termination contact to "ON"

6.4 Connecting the signal relays

As a precaution, signal cables must be separated
from other groups by reinforced insulation in
Caution
their entire lengths.
Fig. 30 Terminals for signal relays in normal state
(not activated)
Terminal Function
C 1 C 2 Common
NO 1 NO 2 Normally open contact
NC 1 NC 2 Normally closed contact
Access to signal relays
The relay outputs are positioned as shown in figs 31 to 36.
BUS TER
OFF ON
Fig. 31 Terminals for relay connection, A2 and A3
Fig. 32 Terminals for relay connection, A5, B1 and B2
Fig. 33 Terminals for relay connection, C1 and C2
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