HRT82TS Installation Guide Rev.C.doc
2016-10-10
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Table 2. HRT82TS terminals
Term. Description
Term. Description
12V
12VDC power supply
TMP
Tamper
GND
Ground
CLK
RACS CLK/DTA bus
TMP
Tamper
DTA
RACS CLK/DTA bus
Fig. 2 Connection to controller with 12VDC power supply output
Fig. 3 Connection to controller without 12VDC power supply output
3.2 Power supply
HRT82TS requires 12VDC nominal power supply. The power must be connected to 12V and GND
terminals. Additionally, the GND terminal is used as reference potential for the RACS CLK/DTA bus.
HRT82TS power supply can be provided by connection to buffer power supply unit (e.g. PS-15DR,
PS20) or connection to AUX output of HRC402DR controller (see fig. 2). Backup battery connected
to power supply unit or directly to HRC402DR controller can be used in order to ensure operation in
case of 230VAC power failure.
Note: All devices connected to the same RACS CLK/DTA bus must be connected to common
reference potential (GND).
