Reflex Servitec 35, Operating Manual

Page: 10 / 22

Installation
10 — English Vacuum spray degassing — 18.12.2019 – Rev. A
6.5.1 T erminal diagram
1 Main fuse 9 Digital inputs:
Water meter; Insufficient water
2 Fuse for motorized ball valve 10 Ball control valve (supply)
3 CD degassing control valve 11 Pressure analogue input
4 Group message 12 External make-up demand (Levelcontrol only)
5 Optional for conductivity 13 WV make-up valve
6 Ball control valve
(correcting variable (25) / Return value (46)) 14 Pump
7 RS-485 interface 15 Mains supply
8
---
T erminal
number
S ignal F unction Wiring
1 PE
230 V power supply via mains
cable and plug.
Pre-wired 2 N
3 L
4 PE
"PU" pump Pre-wired 5N N
6 M1 M 1
7 Y2
CD degassing control valve Pre-wired 8 N
9 PE
10 Y 1
WV make-up valve Pre-wired 11 N
12 PE
13 COM
Group message (floating).
User,
optional
14 NC
15 NO
16 Not assigned
External make-up demand from
a pressurisation station;
controller must be set to
"Levelcontrol"!
User,
optional
17
Make-up (230
V)
18
Make-up (230
V)
19 PE shield
Level analogue input, not used
by the device.
--- 20 - Level (signal)
21 + Level (+ 18 V)
22 PE (shield)
Pressure analogue input Pre-wired
23
- Pressure
(signal)
24
+ Pressure (+
18 V)
25
0 – 10 V
(correcting
variable)
Ball control valve Pre-wired
26
0 – 10 V
(feedback)
27 GND
28 + 24 V (supply)
29 A + RS-485 interface.
User,
T erminal
number
S ignal F unction Wiring
30 B -
optional
31 GND
32
+ 24 V
Insufficient water switch - dry-
running protection
Pre-wired
33 E1
Contact water meter, for
evaluation of the make-up,
terminal 32/33 closed = meter
pulse.
User,
optional
34 E2
Insufficient water switch, contact
32/34. Lead the cable of the
insufficient water switch through
the cable gland and connect at
the terminals
Pre-wired
6.5.2 RS -485 interface
6.5.2.1 Connecting the RS-485 interface
Connect the interface as follows:
1. For connecting the interface use only a cable with these properties:
– LJYCY (TP), 4 × 2 × 0.8, maximum overall bus length 1000 m.
2. Use a shielded cable to connect the interface to terminals 29, 30, 31 of the
main board in the control cabinet.
– For connecting the interface, see chapter 6.5 "Electrical connection"
on page 9 .
3. When using the device with a control centre not supporting an RS-485
interface (RS-232, for example), you must use a corresponding adapter.