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•
Remove the cover of the DS7461i. Press in and up with your thumb and nail directly above the lip of the DS7461i (refer to Figure 1).
•
Remove the DS7461i circuit board from the base. Press the circuit board retainer tab and pull the circuit board up and out of the base
(refer to Figure 2).
Handle this and all circuit boards carefully. Hold the board by its edges.
•
Route the wiring through the wire entrance of the DS7461i base.
•
Mount the DS7461i base to the mounting surface using the supplied screws.
•
Return the DS7461i circuit board to the base.
5.0 Wiring
•
Connect wiring to the DS7461i as shown in Figure 3 and Figure 4.
•
Input zones are designed to monitor Normally Open or Normally Closed dry contacts. They are supervised using 47K ohm end-of-
line resistors.
The protection zone can be used as a magnetic contact by mounting a magnet iwith the reed switch and removing the EOL
resistor for the protection zone. The protection zone cannot be used as a magnetic contact and used to monitor other
contacts at the same time.
•
If the reed switch is not being used, cutting it from the DS7461i circuit board prevents possible tampering to override Zone 1
operation.
•
For fire installations, order Multiplex Fire Zone EOL P/N 28010 in the quantity needed.
The input zones are power limited and supervised.
When used in fire applications, Normally Open contacts must be used on the input zones.
Page 2
Figure 1: Removing the Cover
Tamper
Switch
Circuit Board
Retainer Tab
Wire
Entrance
Terminal Strip
Figure 2: Removing the PCB
DS7461i Terminals
Bus +
Positive Multiplex Input
Bus -
Negative Multiplex Input
1
Input Zone Positive Input
G
Input Zone Ground
Table 1: DS7461i Terminal Descriptions
© Bosch Security Systems B.V., 2020
Address
Switches
O
1 2 3 4 5 6 7 8
N
Reed Switch
Description
DS7461i Installation Guide
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