4 - 20
CZM-1B6 Connections and Ratings
NOTES
1. Power limited to
NFPA 70 per NEC 760.
2. Minimum wire size:
18 AWG.
3. Maximum resistance:
100 ohms total.
4. Maximum
capacitance:
0.4µF between + loop
and loop.
0.8µF between + loop
and chassis.
0.8µF between loop
and chassis.
5. Each detector or group
of detectors, requires a
two-wire circuit of
thermoplastic fixture
wire enclosed in
conduit or limited
energy shielded cable
without conduit, if
permitted by local
building codes.
6. No end of line device
required.
7. Operates in full
conformance with
Style 6.
8. Operates in full
conformance with
Style 4.
9. Either loop may be
wired Class A or B.
10. 60 devices maximum
per loop.
11. T-tapping is NOT
allowed on Class A
loops.
12. Both circuits are
supervised.
Analog Loop Wiring
optional ALD-2I module. The analog
loops may be wired Class A (Style 6) or
Class B (Style 4).
PB-1191 Installation
48 8
37 7
26 6
15 5
55
48 8
37 7
26 6
1
444
333
222
111
444
333
222
111
MOM-4
TB2
MOM-4
TB1
LOOP
1
LOOP
1
LOOP
1
LOOP
2
LOOP
2
LOOP
2
MMB
TB2
MMB
TB3
1
1
1
1
1
1
1
2
2
2
2
2
2
2
3
3
3
3
3
3
3
4
4
4
4
4
4
4
5
5
5
5
5
5
5
6
6
6
6
6
6
6
7
7
7
7
7
7
7
8
8
8
8
8
8
8
9
9
9
9
9
9
9
CZM-1B6
CZM-1B6
CZM-1B6
CZM-1B6
CZM-1B6
CZM-1B6
CZM-1B6
+
+
+
-
-
-
ALD-2I
CLASS A INSTALLATION - See notes 7 and 11.
CLASS B INSTALLATION - See note 8.
PB-1191
When the PBA-1191 is used, the
2-position plug from jumper J1
must be removed as follows:
Remove the screw from the center
of the CZM-1B6 plastic cover and
place it to one side.
Remove the circuit board and locate
jumper J1.
Remove the 2-position plug fom J1.
Reassemble the circuit board and
plastic cover using the screw that
was removed in the first step.
Be sure to use the correct end of
line device with the CZM-1B6 in this
configuration.
Analog Loops
The CZM-1B6 communicates with the
MXL via the MXLs analog loops,
which may be on the MMB-1/-2 or the
Technical Manuals Online! - http://www.tech-man.com
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