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Please keep in mind that the total length of conductors is twice more than the cable length. The table below
explains how to select cross-section of cable cores and length of cables for valves of various types:
Cross-section of cable
cores [mm
2
]
Cross-section of a cable
(parallel connection of
cores) [mm
2
]
Maximum length of the cable
for valve with power ≤ 72 W
[m]
Maximum length of the cable
for valve with power ≤ 36 W
[m]
1.5
2x1.0
not recommended
20
2.5
2x1.5
10
30
4
2x2.5
20
50
6
2x4
30
-
Table 13: Selection of cables for connection between valves with control voltage of 12 V and a control
unit
8.3
Start up
Upon making sure that all connections within the system are correct operator is allowed to supply the
power voltage from the 230 V mains.
All LED indicator should go on one for 1s. (see Section 8.5.1) and then the unit starts regular operation,
which is indicated in the following way:
OPERATION indicator is on for all communication channels of detectors,
OPERATION indicator is on (indicating the status of the control unit)
indicator designated as ‘ ’ is on.
For control units provided with the functionality of power backup (see Table 2) it is also necessary to check
reliability of the backup voltage tripping – the battery
icon should blink after disconnection of power
voltage.
Verification of the installation reliability is possible by initiation of a simple test that demonstrates correct
operation of the system. The test is triggered by manual activation of an alarm reported by any gas detector
connected to the control unit with the alarm signal duration not less than 30 seconds (the procedure of
manual activation of gas alarms is described in manuals for specific gas detectors incorporated into the
system). Upon alarm activation the control unit should indicate that gas concentration is exceeded for the
specific channel, sound and light alarm devices should be activated, relays responsible for indication that
detection threshold are exceeded should be closed and finally the shutoff valve should isolate supply of gas.
After passing result of the test it is necessary to erase historical events from the module memory (see
Section 5.6.1) and open the valve (see Section 8.5.2).
8.4
Configuration of the device / system
8.4.1
Number of detection channels
The number of detection channels (number of gas detectors) is adjusted by execution of the following
procedure:
simultaneously depress and hold the both buttons
CONF.
and
for 3s. – the indicator of
CONF.
button starts blinking,
release the buttons and depress the indicator
CONF.
,
use the
TEST
button to select the number of channels (activation of a specific channel is confirmed
by simultaneous illumination of all LED indicators for that channel),
s. 21|25
User Manual: POD-057-ENG R01
Содержание EcoAlpa5
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