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D1255/D1255B | Installation Instructions |
Bosch Security Systems | 8/04 | 74-06819-000-F 5
13. Press each key on the keypad toward the top of the
keypad to ensure proper alignment and operation
of each key through the mating keypad faceplate
openings.
Table 3: Wiring Connections
Four-Wire Flying Leads
from control panel
D1255/D1255B Flying
Leads
DATA BUS B (30) To Data Out (Green)
DATA BUS A (31) To Data In (Yellow)
POWER + (32*) To 12 VDC (Red)
COMMON – (29*) To Common (Black)
* = only on the D9412G Control Panel
3.3 DIP Switch Settings and Associated
Functions
Select the address of each keypad and silence the
keypad encoding tone by setting the six-position DIP
Switch (refer to Item 7 in Figure 2) located under the
D1255/D1255B Keypad cover.
3.3.1 Setting the DIP Switches
Switches 1 through 3 assign the address for the specific
keypad. Leave Switches 4 and 6 in the ON position.
For supervised keypads, assign only one
keypad to each address. Switch 5 toggles
the encoding tone ON and OFF. With the
encoding tone turned ON, the keypad
sounds a beep every time a key is
pressed.
Table 4: Switch Settings
Switch
Address #
1 2 3 4 5* 6
1 ON ON ON ON ON
2 OFF ON ON ON ON
3 ON OFF ON ON ON
4 OFF OFF ON ON ON
5 ON ON OFF ON ON
6 OFF ON OFF ON ON
7 ON OFF OFF ON ON
8 OFF OFF OFF ON ON
*Encoding Tone ON/OFF.
4.0 Specifications
Table 5: D1255/D1255B Specifications
Power Nominal 12 VDC supplied by the control panel
Idle: 104 mA, armed or disarmed. Current Required
Maximum: 206 mA, with keypad lighted and warning tone ON.
Wiring Four-wire expansion cable supplies Data In, Data Out, +12 VDC, and Common.
Maximum resistance on the conductors connected to SDI BUS A and SDI BUS B is 25 Ω.
Dimensions
H x W x D
4.6 in. x 8.1 in. x 0.8 in.
(11.6 cm x 20.7 cm x 20.7 cm)
D1255 PMS Warm Gray Color
D1255B White and PMS 429 Gray
Display 16-character vacuum fluorescent display. Each character is a 14-segment unit. Soft blue color.
Operating Temperature +32°F to +122°F (0°C to +50°C)
Relative Humidity 5% to 85% @ +86°F (+30°C)