9
max. 12V
Caution
Netzseite
230VAC
Danger
V2
V1
S8
S7
VFS2
RC21
VFS1
CAN1 CAN2
SD Card
Mains
Relays
PF- relay
Low Voltage
Ethernet
S6
S5
S4
S3
S2
S1
GND
R6
NC
C
NO
R5
R4
R3
R2
R1
N
L
VFS1
VFS2
RC21
Bridge
Bridge
Installation
The mains part of the terminal connection room is covered by a plastic sheet. Make sure that the controller is without voltage before
removing it.
D. - Terminal connection
Caution
Low voltage
max. 12VAC/DC
Terminal: Connection for:
S1 Sensor
1
S2 Sensor
2
S3 Sensor
3
S4
Sensor 4
S5 Sensor
5
S6 Sensor
6
S7 Sensor
7
S8 Sensor
8
V1
optional speed controlled
output for High ef
fi
ciency
pumps
V2
optional speed controlled
output for High ef
fi
ciency
pumps
VFS1
Grundfos Direct Sensor
VFS2
Grundfos Direct Sensor
RC21
Room ther
remote
adjuster
Mains voltage
230VAC 50-60Hz
Terminal: Connection
for:
R1 Relay
1
R2 Relay
2
R3 Relay
3
R4 Relay
4
R5 Relay
5
R6 Relay
6
N
Mains neutral conductor N
L
Mains phase conductor L
The PE protective conductor must be
connected to the PE metal terminal
block!
Potential free
Relay
NO
Normally open
C
Common
NC
Normally closed
SD Card Slot
for Data logging
and
fi
rmware up-
dates
Make sure the SD
card‘s orientation is
correct!
Card must be
inserted without
pressure. False
insertion can dam-
age the card slot!
Ethernet
for LAN network
operations
CAN connector
D.1. - Terminal connection
D.2. - Terminal connection diagram
