GLT-299-7-13 Rev.1
Jan 24, 2022
3
Wiring
All wiring must conform to applicable local codes, ordinances, and
regulations.
Install module wiring in accordance with the appropriate wiring
diagrams.
Note: All wiring is power-limited and supervised.
Class B (Short circuit detection is not available)
Detectors and EOL (10k ohm) are connected between A+ and A- in
VDOT-ZMU-SCI.
A+
A-
Lin+
Lin-
Lout+
Lout-
EOL
10kΩ
1
6
3
1
6
3
Loop
- +
TO NEXT
DEVICE
- +
Loop
FROM PANEL OR
PREVIOUS DEVICE
Figure 4
Class A (Short circuit detection is not available)
Detectors are connected between A+
（
B+
）
and A- (B-
）
in VDOT-ZMU-SCI.
B-
B+
A+
A-
Lin+
Lin-
Lout+
Lout-
1
6
3
1
6
3
Loop
- +
TO NEXT
DEVICE
- +
Loop
FROM PANEL OR
PREVIOUS DEVICE
Figure 5
Class B (Short circuit detection is available)
Detectors and EOL (10k ohm) are connected between A+ and A- in
VDOT-ZMU-SCI.
Refer to Figure 4.
Class A (Short circuit detection is available)
Detectors are connected between A+
（
B+
）
and A- (B-
）
in VDOT-ZMU-SCI.
Refer to Figure 5.
Maintenance
Routine inspection: Ensure the module is secure and undamaged.
Operation Test
The purpose of the Operational Test is to confirm the product’s correct
operation.
1) When carrying out site testing of the product, the control panel
shall be set to “one-man-walk test mode” prior to the test.
2) Take any necessary precautions to limit the sounding of the alarm
sounders/bells and any fire service summoning device.
3)
Operate a detector connected to IDC of the module and confirm
that the module is in alarm condition and the input LED (red)
illuminates. Confirm that an alarm signal is transmitted to the
control panel.
Note: If the test cannot be carried out by operating the detector, test the
area between terminal A+ and A-
（
or B+ and B-
）
with appr. 2.4kΩ
resistor to check the module.
4) After the detector has given the alarm condition, reset the detector
from the control panel. It may be necessary to allow a short time to
elapse before the detector is reset.
Note: For detector testing and cleaning information, refer to the
instruction manual of detector.
5) In any subtype setting, open between terminal A+ and A-
（
or B+ and
B-
）
, and confirm that the control panel detects the open circuit. If
subtype is set as 5-8, short between A+ and A-
（
or B+ and B-
）
, and
confirm that the control panel detects the short circuit.
6) Short between terminal Lin+ (Lout+) and Lin- (Lout-), and the SCI
LED (yellow) is illuminated. The short circuit isolator isolates the
devices connected after the short-circuited area, which makes these
devices have no response. Upon removal of the short condition, the
area is automatically connected to go back to the normal operating
status, and the SCI LED (yellow) turns off.
Do not connect cables in reverse polarity. Failure to connect the polarity
correctly could result in damage to the module and/or other equipment.
CAUTION
!
Use cable AWG12-22 for wiring. Do not connect different gauge cables
at one terminal in order to prevent loosening. Use a fork terminal for
crimping two cables.
CAUTION
!
