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Installation
Brief description of switching function:
The T function sensor 1 > sensor 2
switches the pump to relay R1.
The thermostat function via sensor 3
switches the pump to relay R2.
D.19. - Universal ΔT controller
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 (control)
S2 Sensor 2 (reference)
S3 Sensor 3 (thermostat)
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 e.g. pump L
N e.g. pump N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Brief description of switching function:
The T function sensor 1 > sensor 2 switches the pump to
relay R1.
The T function 2 > sensor 3 switches the pump to relay
R2.
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 (control)
S2 Sensor 2 (ref.+contr.)
S3 Sensor 3 (reference)
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 e.g. pump L
N e.g. pump N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.20. - Universal 2x T-controller
21


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