User manual
8
741.011 | 12.18
EN
5.3.1 Position of the connection terminals
L R1
N
PE PEPEPE
N
PWM
R1
R
S54321
RS
11
2
15
13
14
6
7
11
13
15
18
Fig. 3: Terminal clamps in the lower part of the controller (terminal cover removed)
Power connection terminal block:
L
1x phase conductor (mains input)
R1
1x output (TRIAC, for pump)
N
2x neutral conductor (common neutral conductors for mains power input
and output)
Note
Output R1 is protected by an electronic fuse.
Protective conductor terminal block:
PE
4x protective earth (common protective earth for power connection
terminal block)
Signals terminal block:
1 – 4 4x sensor input (Pt1000 temperature sensor)
5
1x sensor input (Pt1000 temperature sensor or pulse water meter input)
R
S
not used
PWM R1 1x control output (for PWM controlled high-efficiency pumps)
6x mass connection (common mass for sensor inputs and control out-
puts)
Pin strip, for internal use only
Cable openings on the rear side of the casing
Upper strain relief clamps (2 identical plastic links, each with 2 strain relief clamps,
supplied in the scope of delivery)
Lower strain relief clamps
Cable openings at the bottom of the casing