DSC HS2128 Reference Manual page 15

Do not use shielded wire for Corbus wiring.
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Note: Any module can be connected anywhere along the Corbus. Separate wire runs for keypads, zone expanders etc. are
not necessary.
Note: No module can be more than 1,000'/305m (in wire length) from the panel. Do not use shielded wire for Corbus wiring.
Figure 2-3 Corbus Wiring
Module (A) is wired correctly as it is within 1,000'/305m of the panel, in wire distance. Module (B) is wired correctly as it is
within 1,000'/305m of the panel, in wire distance. Module (C) is NOT wired correctly as it is farther than 1,000'/305m from the
panel.
Current Ratings
In order for the system to operate properly, the power output of the alarm controller and power supply modules cannot be
exceeded. Use the following data to ensure that the available current is not exceeded.
Table 2-1 System Output Ratings
Device Output
AUX:
HS2016-4
HS2016
HS2032
HS2064 BELL:
HS2064 E
HS2128
HS2128 E
HSM2208 AUX:
HSM2108 AUX:
Section 2: Installation
Rating (12V )
DC
700mA. Subtract the listed rating for each keypad, expansion module and accessory connected to
AUX or Corbus. At least 100mA must be reserved for the Corbus.
700mA. Continuous rating.
2.0A. short term. Available only with standby battery connected. Not for UL/ULC or EN certified
applications.
250mA. Continuous rating. Subtract for each device connected. Subtract the total load on this
terminal from the alarm panel AUX/Corbus output.
100mA. Subtract for each device connected. Subtract the total load on this terminal from the panel
AUX/Corbus output.
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