Electrical Connection - Reflex variomat 1 Assembly, Operating, And Maintenance Instructions

Electrical connection

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'
I/O circuit board - single-pump system
Designation Terminal
Supply X0 / 1
(230 V) X0 / 2
X0 / 3
Supply X0 / 1
(400 V) X0 / 2
X0 / 3
X0 / 4
X0 / 5
Make-up (4)
(230 V)
Dry-running
protection message
(fl oating)
Common message
(fl oating)
Level gauge
(pressure cell)
(8)
Contact water meter
(optional)
Pressure
transducer (4)
Pump 1 (2)
(230 V)
Signal
L
Wiring at the terminal block next to the fuses, pre-wired
N
with a shock-proof plug
PE
L1
L2
Wiring at the terminal block next to the contactors -
L3
wire 'variomat 2' on site
N
PE
4 Y1
5 N Wire on site, optional
6 PE
13
14 Wire on site, optional
23 NC
24 COM Wire on site, optional
25 NO
35 +18 V
36 GND
Is connected in the control box, put the plug on the
pressure cell on site and screw on tightly
37 AE
38 PE (screen)
43 +24 V DC Wire on site, additionally connect the pins 7/8 on the
44 E1 jumper block J2 (see above figure)
39 +18 V
40 GND
Is connected
41 AE
42 PE (screen)
15 M1
16 N Is connected
17 PE
reflex 'variomat'
I/O circuit board - dual-pump system
Remarks
Assembly
13
J2 7/8 (fourth from
left) occupied
→ Contact water
meter can be
evaluated