Bosch D9412GV2 Troubleshooting Manual page 38

D9412GV2/D7412GV2 | Troubleshooting Guide | 3.0
D
Refer to Figure 25 on page 46.
Are the D8125MUX data wires connected correctly to
the control panel ZONEX IN and OUT terminals?
Fix the faulty wiring.
1. Set your digital voltmeter (DVM) to VDC.
2. Connect the red lead to MUX BUS A/B +.
3. Connect the black lead to MUX BUS A/B -.
Does it show 7 VDC to 10 VDC with fluctuating voltage?
Does it show <7 VDC?
There is an open on the system's wiring. Refer
to TTP47 Open Wiring
Does it show <2 VDC?
There are too many devices, or excessive wire
length, for the wire gauge used. Perform
voltage drop calculations to determine an
acceptable combination of wire gauge and
length for the current draw of the devices
installed on the circuit.
There is a short on the MUX bus caused by either a
reversed diode (non-i devices only; refer to
on page 39), a defective device, or reversed or
shorted wiring. Refer to Section
Symptoms on page
Return to the start of this TTP, and answer
question "Are all points missing?"
3.2.1 Powering the D5060
Refer to Figure 23 and Figure 24
the D5060 on, press and hold the [1] key until the unit
beeps. To turn the unit off, press and hold the [#] and
[*] keys simultaneously until the unit beeps.
After 5 minutes of inactivity, the
programmer powers down automatically
to conserve power.
3.2.2 Programming Points
1. The D5060 shows the prompt Adr after it is
powered. This indicates that it is ready to begin
programming.
2. If the MUX device has no DIP switches, connect
the D5060 to the point to be programmed
(Figure 23). If the MUX device has DIP switches,
program the device using its DIP switches.
38
on page 100.
Figure 22
3.5 Ground Fault
95 to isolate the cause.
to the
on page 40. To turn
Troubleshooting
If the MUX device has no DIP switches,
connect the D8125MUX and the MUX
device to be programmed to the D5060
for simultaneous programming (refer to
Figure 23 on page 40). If the MUX device
has DIP switches, program the device
using its DIP switches, and program the
D8125MUX using the D5060 (
3. Enter the point's three-digit address. The address
must be between 1 and 255. Press [#]. The
programmer displays tyP.
4. Enter the number corresponding to the point type
you are programming (
press [#]. The programmer alternately displays the
address and the point type.
When you program for a MUX smoke
device by entering decimal value 4 or 5
(Table 20), an 18-second timer starts
counting. Do not disconnect the MUX
smoke device until the timer reaches zero.
5. Press [#] to program a point connected to the
D5060 and the D8125MUX (if connected), or
press [1] to program the D8125MUX only. If the
MUX device has DIP switches, program the
device using its DIP switches.
Press [*] at any time to return to a
previous step in the procedure.
6. If the point is programmed correctly, the unit
beeps once and displays Adr, indicating that it is
ready to program the next point. If the point was
not programmed correctly, the unit sounds a
three-beep error tone and one of the following
messages displays:
The point was not programmed correctly.
Err:
Communications with the D8125MUX
PnL:
failed.
7. Press [*] to clear the entry, or press [#] to
reprogram.
3.2.3 DS7460i Dual Input Multiplex Module
The DS7460i reserves two points on the MUX bus.
When programming dual points, they must occupy
first an odd point number, then an even point
number. For example, you must program DS7460i
modules to occupy Points 9 and 10, not 10 and 11.
When programming the odd point number,
the following even point number is
automatically programmed.
Bosch Security Systems, Inc. | 11/05 | F01U011024B
Figure 23 ).
Table 19 on page 39 ), then