SGB VLR 230, Документация, Страница: 12 / 45

VACUUM LEAK DETECTOR VLR ..
2020-06-29 9
4.6.2 Solenoid valve(s)
(1) Cable length should not be longer than 30 metres
10
(2) Recommended cable type: NYM 3 x 1.5 mm
2
, LiYY 3 x 0.75 mm
2
with wire-end sleeves
4.7. Electrical connection
(1) Voltage supply: see type plate.
(2) Firmly laid, i.e. no plug or switch connectors.
(3) Terminal assignment (see also SL-853 600 (VLR .. and SL-854 800 (VLR ../E):
1
230 V or “+” with 24 VDC power supply
2
230 V or “-“ with 24 VDC power supply
3/4 Occupied (leak detector pump)
5/6 External signal (voltage supply in case of alarm, is switched off using "mute" button.
7/8 VLR ../E ONLY connection of the solenoid valve(s)
11/12 Dry relay contacts, open in case of alarm and power failure
21/22 VLR ../E ONLY connection of the dry relay probe contacts (contacts have to be
open in case of alarm and power failure)
11
NOTE: When the device is delivered a bridge is used which must be removed when
the probe is connected
X/X Serial data transmission (no. 106 in the circuit diagrams)
4.8. Installation examples
Installation examples are given in the appendix.
The following notes must always be heeded:
Note: The connection of interstitial spaces is only permitted for battery tank plants and
pipework UNDER the following conditions.
1. Installation example P
– 01:
The low point(s) must not exceed the dimension H
max
. The pipe may also have further high-
est points and lowest points AS LONG AS the difference in height between high points and
lowest points is not above H
max
.
2. Installation example P
– 02:
The pipe here, as under No. 5, may also have highest and lowest points within the above-
mentioned limits.
3. Installation example P
– 03:
The dimensions H
max
is the limit between the "highest" highest point and the "lowest" lowest
point. The volumes of the pipes connected have to keep the following conditions:
4
•
V
ÜR 1
> V
ÜR 1
+ V
ÜR 2
+ V
ÜR 3
+ V
ÜR 4
and
4
•
V
ÜR 2
> V
ÜR 2
+ V
ÜR 3
+ V
ÜR 4
etc.
V
ÜR (number)
is the volume of the respective interstitial space.
4. Installation example Q
– 01:
The solenoid valve protects the leak detector from impermissibly high pressure. The solenoid
valve is monitored electronically, which means failure of the solenoid valve leads to triggering
of the alarm signal. The conditions listed under points 5 to 7 also apply here.
10
The length is limited for EMC-related reasons, longer lengths only after consultation and agreement
with the manufacturer.
11
9/10 ONLY for probes requiring a voltage supply. E.g. not for floating switches.