Problems With Points; Table 9: 9000 Series To D8125 Popex Point Problems Troubleshooting - Bosch D8125 Operation And Installation Manual

D8125
Troubleshooting
5. During the Service Walk Test you may want to see the points that remain untested. When point text is
displayed, press [ESC]. The display shows ### PTS TO TEST. Press [ESC].
VIEW UNTESTED ? is displayed. Press [ENT]. ### PTS UNTESTED is displayed. Press [NEXT] to see
a list of the points that have not yet been tested. Move through this list by pressing [NEXT]. To resume the
Service Walk Test, press [ESC]. ### PTS UNTESTED is displayed. Press [ESC]. ### PTS TO TEST is
displayed. Resume testing points. To end the Service Walk Test, press [ESC] until the Command Center
displays idle text.
6. After testing the last point, 0 PTS TO TEST displays. Press [ESC]. The display momentarily shows ALL
PTS TESTED before returning to idle text.
Note: Automatic time-out returns the system to idle text: If there is no point or Command Center activity for twenty
minutes, the walk test ends automatically. The Command Center returns to idle text.
4. 1 .2

Problems with Points

If you incorrectly set the switches on a POPIT you may create both a missing and extra point. When you find a missing
point, perform a Service Walk Test to search for extra points.
System
Point appears as
missing at command
centers and in reports
to the receiver.
Points intermittently
appear as missing.
Points are erratic.
One or more points
remain in trouble or
alarm with all devices
connected to the
sensor loops normal.

Table 9: 9000 Series to D8125 POPEX Point Problems Troubleshooting

74-04247-000-N
Diagnosis
POPIT is not connected or
incorrectly connected to the data
expansion loop.
D8128C OctoPOPIT is installed at
the last address on the ZONEX
bus.
Sensor loop switch (1 to 8) is
turned off on OctoPOPIT.
POPIT is not programmed
correctly.
Problem with data expansion loop.
Debounce Count parameter set at
1. If an off-board point is in
transition between normal and
faulted conditions as the panel
scans it, it appears as missing.
The sensor loop is open, shorted,
or grounded.
Opens, shorts, or grounds cause
troubles or alarms depending on
point programming.
D8125 Operation and Installation Guide
Remedy
Verify that a POPIT module programmed for the missing point
number is connected to the data expansion loop of the correct
ZONEX module. Points 9 to 127 connect to ZONEX module 1.
Points 129 to 247 connect to ZONEX module 2.
Meter each POPIT to verify the polarity of the data expansion
loop. Voltage should be 9 to 13 VDC at each POPIT.
Install a D8125 POPEX and D9127 POPITs for Points 121-127 on
ZONEX 1 and for Points 241-247 on ZONEX 2.
If the sensor loop switch on an OctoPOPIT is turned off for a
programmed point, the point reports as missing.
Verify that the switches on the POPIT are set for the missing
POPIT number. Switches set incorrectly can cause both missing
and extra POPITs.
Performing a Service Walk Test to search for extra points may
help diagnose the problem.
See Section 15.7 Problems with D8125 POPEX Data Expansion
Loops in the D9412G/D7412G Operation and Installation Guide
(P/N: 43448).
It is recommended that the Debounce Count be left at the default
of 2, with the exception of Interior Follower Points, where the
Debounce Count should be set to 3.
Decreasing the Debounce Count to 1 may cause points to appear
as missing. Increasing the Debounce may cause missed alarms.
Remove the sensor loop from the D9412/D9112 or POPIT and
meter it for continuity. There should be no more than 100 Ω
resistance, plus the value of the end of line resistor on the wires. If
you meter less resistance than the value of the end of line resistor,
check the wiring for shorts.
With the wires for the loop removed, meter them for continuity to
ground. A ground before the end of line resistor on an on-board
point's sensor loop is interpreted as a short. A ground on a sensor
loop for a POPIT point is interpreted as an open.
Page 40 © 2004 Bosch Security Systems, Inc.