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2. No end of line device is required for these
initiating loops.
3. Up to 60 detectors can be used per loop. See
the table at the right for a list of compatible
detectors. Use any combination of those
listed.
4. The compatibility identifiers for the compatible
devices are the model numbers listed at the
right.
5. Total circuit resistance must not exceed 100
ohms.
Maximum capacitance:
0.4μF, between loop+ and loop–
0.8μF, between loop+ and chassis
0.8μF, between loop– and chassis
6. T-tapping is not allowed on Class A loops.
For additional information on the MXL/MXLV
System, refer to the MXL/MXLV Manual, P/N 315-
092036.
For additional wiring information, refer to Wiring
Specification for MXL, MXL-IQ and MXLV
Systems, P/N 315-091772 revision 6 or higher.
NO T-TAPPING ALLOWED
INITIATING
DEVICE
+
MOM-4
TB 1
TB 2
Figure 3
ALD-2I Wiring Diagram
CLASS A WIRING *
CLASS B WIRING **
T-TAPPING ALLOWED
+
-
+
+
-
+
+
+
-
+
-
-
+
+
1
2
3
4
5
6
LOOP 1
LOOP 2
*
OPERATES IN FULL CONFORMANCE WITH STYLE 6
**
OPERATES IN FULL CONFORMANCE WITH STYLE 4
C
o
m
D
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v
C
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1 -
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F
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1 -
1
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6 -
0
6 / I
D I
6 -
0
A I
6 /
D I
6 -
0
B I
6 /
I L I
1 -
1 /
H
I L I
1 -
A
1 /
I L I
1 -
B
1 /
L I
P
1 -
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L I
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( 1
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2 -
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d (
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M
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M
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6
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6
B /
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B -
6
M
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NOT USED
-
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7
8
9
10 11 12
3
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R
L I
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D
B
3 -
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0
—
2 /
0
B
—
—
6
—
6
D
B /
6
R
—
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S
—
—
F /
P
T
1 -
1
s i
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EITHER LOOP MAY BE WIRED AS
CLASS A OR CLASS B
NO END OF LINE DEVICE REQUIRED
BOTH CIRCUITS SUPERVISED AND
POWER LIMITED PER NEC 760
POSITIVE AND NEGATIVE GROUND
+
FAULT DETECTED AT <40K OHMS
FOR TERMINALS 1-8
-
INITIATING DEVICE
13 14 15 16
P
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