6
en
2.2
Electrical connection
WARNING!
Electric shock!
Upon opening the housing, live parts are exposed!
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Always disconnect the device from power supply
before opening the housing!
ATTENTION!
ESD damage!
Electrostatic discharge can lead to damage to electronic com-
ponents!
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Take care to discharge properly before touching
the inside of the device! To do so, touch a grounded
surface such as a radiator or tap!
Note
Connecting the device to the power supply must always be the last step
of the installation!
Note
It must be possible to disconnect the device from the mains at any time.
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Install the mains plug such that it is accessible at any time.
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If this is not possible, install a switch that can be accessed.
Do not use the device if it is visibly damaged!
Attach flexible cables to the housing with the enclosed strain relief and the cor-
responding screws.
The controller is supplied with power via a mains cable. The power supply of the
device must be 100 … 240 V~ (50 … 60 Hz).
sensor terminals
protective conductor
common terminal block
load terminals
mains terminals
VBus
®
1
2
S1
S2
S3
S4
3
4
5
6
T2A
100 ... 240 V~
50-60 Hz
VBus
9 10 11 12
13 14
DeltaSol
®
AL E HE
1 (1) A (100 ... 240) V~
14 (3) A (100 ... 240) V~
R1
R2
IP 20
7
8
PWM
PFB
LED
N
N
N
17
18 19
16
15
R2-N
R2-N
L
L
20 21
R2-L
R2-L
R1
22 23
24 25 26 27
VFD
The controller is equipped with 1
semiconductor relay
to which a load such as
a pump, a valve, etc. can be connected:
17
Protective conductor
⏚
18
Neutral conductor N
19
Conductor R1
The controller is equipped with 2 high-current relays for connecting an
electric
immersion heater
of up to 3 kW:
16
Protective conductor
⏚
23
Mains conductor
22
Conductor electric immersion heater
21
Neutral conductor mains
20
Neutral conductor electric immersion heater
Depending on the product version, mains cables and sensor cables are already
connected to the device. If that is not the case, please proceed as follows:
Connect the
temperature sensors
(S1 to S5) to the corresponding terminals
with either polarity:
1/2
Sensor 1 (collector sensor)
3/4
Sensor 2 (store sensor base)
5/6
Sensor 3 (store sensor top)
7/8
Sensor 4 (return sensor)
terminal for a
Grundfos Direct Sensor
TM
RCTT terminals
PWM terminals
