Electrical wiring and connection must be performed by a qualified electrician according to the applicable local
(electricity board) regulations and VDE regulations.
The system must be de-energised before any work
is carried out on electrical components.
Comprehensive electrical connection diagrams are enclosed with
these instructions and must be adhered to.
The following information applies only to standard systems and is largely restricted to the connections required
on site.
– Loosen the 2 recessed head screws on the control box (13).
– Open the cover.
– Pass all the cables to be installed through the cable conduit fitting.
Important: Use only cable conduit fittings suitable for the respective cable.
– Connect all cables (refer to the following and electrical circuit diagram).
– Note the connected loads on p. 29 for on-site fuse protection.
Overview of the wiring diagram on the circuit board - ’variomat 2’
J2 7/8
(fourth
from
left) occupied
→
Contact water
meter can be
evaluated
reflex ’variomat’
Assembly
13
Designation
Terminal
Signal
Remarks
Supply
X0 / 1
L
Wiring at the terminal block next to the fuses, pre-wired
with a shock-proof plug
(230 V)
X0 / 2
N
X0 / 3
PE
Supply
X0 / 1
L1
Wiring at the terminal block next to the contactors -
wire ’variomat 2’ on site
(400 V)
X0 / 2
L2
X0 / 3
L3
X0 / 4
N
X0 / 5
PE
Make-up (4)
4
Y1
Wire on site, optional
(230 V)
5
N
6
PE
Dry-running
protection message
13
Wire on site, optional
14
(fl oating)
Common message
23
NC
(fl oating)
24
COM
Wire on site, optional
25
NO
Level gauge
35
+18 V
Is connected in the control box, put the plug on the
pressure cell on site and screw on tightly
(pressure cell)
36
GND
(8)
37
AE
38
PE (screen)
Contact water meter
(optional)
43
+24 V DC
Wire on site, additionally connect the pins 7/8 on the
jumper block J2 (see above figure)
44
E1
Pressure
transducer (4)
39
+18 V
Is connected
40
GND
41
AE
42
PE (screen)
Pump 1 (2)
15
M1
(230 V)
16
N
Is connected
17
PE
Electrical connection
I/O circuit board - single-pump system
I/O circuit board - dual-pump system
