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T9, 12, 23 30
FUNCTION
This controller
ensures the efficient
cleaning
of
the
filter
mattress
on initiation of a cleaning
rycle
after
each
dutycycle of
the
Unimaster dust control
unit.
To
protect
the Unimaster filter fabric, the
controller
is interlocked so.that the fan motor
cannot
be
restarted during the operation of the cleaner
motor.
SPECIFICATION
The equipment is housed
in
a
rigid
H/C box
designed
to
lP65
protection,
with
cable entries
at top
and
bottom.
Functioning
as a dual direct-on-line
starter,
it
comprises
(1)
a double-wound transformer
with
a
selection of input tappings for the
incoming supply,
gMng
an
output of 24Y AC;
(2)two
contactors
labelled
K1 and K2
(electrically
interlocked to
prevent
simultaneous operation) to control the
fan and cleaner
motors;
(3)
a thermal overload
relay with
single
phase protection
for the fan motor
(no
protection
being
supplied for
the cleaner
motor except
where
required
by national
regulations,
as
in France);
(4)
a
pre-set
electronic
timer
module controlling
the
'fan
rundown' and'cleaning'
periods.
These components
are all
mounted
on a baseplate
within the box.
Timer
ambient temperature
range is
-5"C
to
+40'C.
For temperatures
outside these
limits
please
refer
to DCE.
!NSTALI.ATION
Mount
the controller
independently of the Unimaster
dust control unit on a vertical surface
free of
vibration.
Bring
the
incoming
mains
via
a
switch-fuse
unit
(preferably
'on-load'
typelto the terminal
block,
{see
Table
1
for the fuse rating). Seal all
joints
at conduit
entry
holes
to
prevent
dust entering
the box.
Publication
16244
(GB)
OVERLOAD
SETIING
IMPORTANT
Before start-up,
the overload
relay
calibration
lever must be set
at the value
given
by
motor
full load current
in Table
2.
OPERANNG
RANGE
The controlldr
is.suitable
for use on a
range of
3-phase,
50
-
60
Hz operating
voltages,
with fan
motors
rated up to and
including some
at 11 kW.
A
stardelta
(Y/A)
controller,
type
ECT SD, is available
for other
11 kW fans. S6e
Table
2.
A variance
of t10o/o is
allowable on transformer
input tappings.
OPERATION
1. START
(average
operating
period
for fan, 4 hours)
Press
'START'
button:
o Fan
contactor K1
is
energized;
timer
module
sets
and
fan motor runs.
2. CLEAN
Press'CLEAN' button:
o Fan
contactor
K1 is de+nergized
and the
timer
energized.
O After
approximately 90
seconds
cleaner
motor
contactor
K2 is energized;
cleaner motor
now
runs
for approximately
45 seconds.
o Cleaner
motor
contactor
is
decnergized
and
the
timer
resumes inactive state.
Before
a cleaning
cycle can be
initiated
by
pressing
the
'CLEAN'
button,
thefan
contactor
K1 must
have
remained
energized
for at least
30 seconds.
A
'fail-safe'feature ensures that
if the
power
supply
fails
while the timer
is
performing
a cycle,
then
re-
applying
the
power
will not cause
the cycle
to be
completed.
I nstead, the controller
will
automatically
re-set
ready for the fan to
be restarted.
KW
0.18
0.50
0.55
0.75
1.10
1,50
2.20
3.00
4.00
5.50
7.50
11.00
1.28
1.65
2.30
3.22
4.32
5.70
7.40
9.80
13.80
19.30
'1.26
1.60
2.20
3.15
4.20
5.40
7.00
9.20
13.00
18.20
Single Phase
110v
220v
240v
4.4
7.4
9.7
14.0
20.0
Table2-MotorCurtents
Three
Phase
200v
220v 380v
415v 440v
1.40 1.20 0.75 0.69
0.65
2.2 2.2
3.3
3.3
4.t 4.7
6.5 6.5
,r_
r:
2.50
2.40 1.40
3.30 3.10
1.80
4.60 4.30
2.50
6.47 6.05
3.50
8.70 8.13
4.70
11.7810.72 6.20
15.4014.00
8.10
20.3018.5010.70
28.50 25.90
15.00
39.90 36.30
21.00
Figwes
in-amps lor
motds
o,
otlrcrSrlcY-
Spaces
marted
le, not suitablo
to.
application
FLC
Amps
0.00
-
0.45
-
0.95
-
1.51
-
4.00
-
Tablel-FuseRadng
HRC'Amp
Rating
Fuse Wire
Amp Rating
6
8
'12
16
30
o.M
0.94
1.50
3.90
6.25
2
4
6
10
16
20
25
32
40
50
63
6.26
7.76
10.01
12.21
17.2'.1
21.61
7.75
10.00
12.20
17.20
21.60
29.00
T
Fuse
\Nire
not
recommended
'HRC.
High rupturing capacity.
HRC Fusas: BS
88
Pan 2 1975
Class
0l l.E.C. 21 69:2
Fuse
wiro
sire basod
upon
sir
times
full load
curent
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