Installation Guide
MX1
Fire Alarm System (NZ)
LT0360 ISSUE 2.43
29 NOVEMBER 2017
PAGE 9
Mini-Gen
Mini-Gen is an alternative tone generator to
T-GEN 50, but with lower power and fewer
facilities.
The
MX1
Slimline cabinet gear plate has
mounting footprints for two Mini-Gens,
overlapped with the T-GEN 50 footprint. The
first Mini-Gen should be mounted in the lower
position, so that it is earthed by the metal
standoff. The second Mini-Gen is mounted
on plastic standoffs, and should be earthed
to the first Mini-Gen as shown in Figure 9.
On the 15U cabinet gear plate both Mini-
Gens are mounted on plastic stand-offs.
Earth the Mini-Gens using the spare earth
lead included in the panel.
Mini-Gens must be connected to the ANC3
relay output since this has sufficient current
rating. This relay can be configured for full
supervision of loudspeaker wiring, using the
27k
EOLRs provided with the
MX1
.
All Mini-Gens must have their 2W
supervision link fitted. If only one Mini-Gen is
used, the unused 27k
EOLRs must be
connected to its DC terminals so that there
are still three EOLRs in total.
The
MX1
must be configured to have “ANC3”
supervision enabled for the ANC3 relay.
Figure 9
– Wiring Ancillary Relay to Mini-Gen(s)
Multiple Branched Loads
Ancillary relay ANC3 can supervise wiring to
controlled loads on up to three branches. This
output can switch loads up to 5A resistive at
30V. Figure 10 shows the necessary wiring.
The loads must all be isolated with diodes as
shown in the figure. A suitable diode for loads
up to 1A each is 1N5404.
Inductive loads such as bells must have
suppression capacitors or diodes fitted as well.
For a single branch, the EOLR is 9.1k
. For
two branches, each EOLR is 18k
. For three
branches, each EOLR is 27k
.
Suitable EOLRs are supplied with the
MX1
.
The
MX1
must be configured to have “ANC3”
supervision enabled for the ANC3 relay.
+
-
+
-
+
-
+
-
+
-
+
-
EOLR
EOLR
EOLR
Diode
isolated
loads
M
X
1
C
O
N
T
R
O
L
L
E
R
A
N
C
R
E
L
A
Y
1
A
N
C
R
E
L
A
Y
2
A
N
C
R
E
L
A
Y
3
0V
SUP
NC
C
VBF+
NO
Figure 10
– Wiring for multiple branched loads with supervision
2 W link
fitted
Optional Control of Alert
2 W link
fitted
G
P
O
u
tp
u
t
MINI GEN
MK2
MINI GEN
MK2
+
-
LINE
OUT
+
-
LINE
OUT
27k EOLR on
100V line
27k EOLRs
on
100V line
Optionally link SYNC terminals if
tones must be synchronised
M
X
1
C
O
N
T
R
O
L
L
E
R
A
N
C
R
E
L
A
Y
1
A
N
C
R
E
L
A
Y
2
A
N
C
R
E
L
A
Y
3
0V
SUP
NC
C
VBF+
NO
DC
IN
+
VE
- VE
SUP
+
ALERT
-
SYNC -
Earth second Mini-Gen
to first Mini-Gen
DC
IN
+
VE
- VE
SUP
+
ALERT
-
SYNC -
Mount PCB with M3 crosshead
screw to metal standoff here for
earthing to gearplate
(all other pcb standoffs used are
plastic)