en
18
2.2
Electrical connection
WARNING!
Electric shock!
Upon opening the housing, live parts are exposed!
Î
Always disconnect the controller from power supply
before opening the housing!
ATTENTION!
ESD damage!
Electrostatic discharge can lead to damage to electronic compo-
nents!
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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!
The device is supplied with power via a mains cable. The power supply must be
100 … 240 V~ (50 … 60 Hz).
Attach flexible cables to the housing with the enclosed strain relief and the cor-
responding screws.
The device is equipped with five relays to which loads can be connected with cor-
rect polarity (Rx/N):
17 … 21 = Ground conductor terminal
⌯
15 … 16 = Potential-free relay
N, 23 = Relay 4
N, 25 = Relay 3
N, 27 = Relay 2
N, 29 = Relay 1
N
= Neutral conductor
Connect the temperature sensors (S1 to S6) to the corresponding terminals
with either polarity:
1/2 = Sensor 1
3/4 = Sensor 2
5/6 = Sensor 3
7/8 = Sensor 4
9/10 = Sensor 5
11/12 = Sensor 6
The RTA remote control can optionally be connected to the terminals 9/10.
Connect the controller to the HKM3 via the RESOL VBus
®
. Connect the RESOL
VBus
®
to the terminals marked “VBus” with either polarity:
13 = VBus
®
terminal
14 = VBus
®
terminal
Connect the mains cable to the following terminals:
30 = Neutral conductor N
31 = Conductor L
17 = Ground conductor terminal
⌯
sensor terminals
VBus terminals
ground conductor common
terminal block
load terminals
mains terminals