Advanced instructions
EN
VTS reserves the right to implement changes without prior notice
5
3.2. EAHU Start Control Signals
VTS-E-0006 module is equipped with three special terminals monitoring start-up of the EAHU.
Source of control
Control channel;
Connection place
Function
Remote control
ESP
– channel 4
X3:25
X3:26
External start permission – lack of the permission, blocks the control signals
coming from channel no 1 (
LOC
) and no 2 (
RC
).
Starting-up and output control of the EAHU is only accessible through the
CO
channel (the CO detection module input).
!
In case when connecting an external ESP control signal is not
intended, move both slider connectors S1, located on the VTS-E-0006
PWB, to the ON position.
ALARM
– channel 5
X3:11
X3:12
Fire sensor signal - the highest priority – interruption of sensor circuit blocks all
remaining control channels and stops the EAHU.
!
The input is equipped with memory module. Operation of the exhaust
unit after a fire alarm requires fixing the cause of the alarm by turning
off and switching on again the Q1 mains switch of the control gear.
FC ALARM
– channel 6
X3:27
X3:28
Failure signal of frequency converter. Priority of this channel is the same as the
input of fire sensor - interruption of FC ALARM circuit blocks all control channels
and stops the exhaust unit.
!
1.
List of events which triggers the alarm to stop the exhaust unit
depends on properties and configuration of the converter.
2.
The input is equipped with memory module. The exhaust unit start-
up after converter alarm event requires fixing the cause of the alarm
and turning off and switching on again the Q1 mains switch of the
control gear.
3.3. Order of Control Channels
AND
OR
LOC
RC
ESP
CO
ALARM
FC ALARM
2U1
OR
AND
AND
x
y
AND
z
OR
x
y
z
x
y
z
0
0
0
0
1
1
1
0
1
1
1
1
x
y
z
0
0
0
0
1
0
1
0
0
1
1
1
3.4. Damper Control
M2
damper opening request is set at the same time as the
2U1 to 2U4
converters start signal. Operating contact controlling the damper
provides the
X3:20
terminal with
24V AC
in relatiobn to the
X3:21
terminal.
3.5. EAHU Start Confirmation for Remote Equipment
Activation of a single voltage-free switching contact marked
START CONFIRMATION
is done in parallel with setting the
2U1 to 2U4
converters start signal. The contact is provided to the
X3:22 ÷ X3:24
terminals.
!
1. The EAHU operation confirmation signal indicates that the control system is working properly but it does not control and
guarantee the performance of the air exhaust system. The VS...CG-0-1 control gears do not control the air flow in the
exhaust system and do not detect e.g.: blockage of the air damper.
2. Rated parameters of the START CONFIRMATION contact: 24V AC/DC, current 2A
3.6. Filter Check
Terminals
X3:29
X3:32
are designed for connecting pressure control units:
2S1H
and
2S2H
. A contact shorting of any pressure control
unit activates the filter contamination warning LED located at the control gear front panel.
!
Contamination of filter does not influence controlling of the EAHU. The pressure control inputs are used exclusively for
indicating filter contamination status and prompting their replacement.
