Table of Contents
Advertisement
lrla
@
T LL
TY
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
Hide quick links:
Advertisement
Table of Contents
