HRT82MF Installation Guide Rev.B
2015-08-13
© 2015 ROGER sp.j. All rights reserved.
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Fig. 3 Connection to controller without 12VDC power supply output
3.2 Power supply
HRT82MF 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.
HRT82MF power supply can be provided by connection to buffer power supply unit (e.g. PS-15DR,
PS20) or connection to TML 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).
3.3 RACS CLK/DTA communication bus
RACS CLK/DTA is the addressable bidirectional communication standard developed and applied in
Roger controllers in order to enable their communication with peripheral devices. Addresses of all
devices connected to CLK and DTA lines must be properly configured in range of 00..15. Standard
unshielded signal cables (e.g. U/UTP cat. 5) with maximal length of 150m can be used for RACS
CLK/DTA communication.
3.4 Front panel
LED indicators
In the top part of HRT82MF reader there are located four icons and LED indicators. Their functions
are explained in table 3 and they depend on type of connected controller.
Table 3. LED indicators
Symbol Name
Colour
Function
HRC controller
PR821-CH controller
HOTEL
STAFF
Green
Programmable
Presence of hotel staff card in
card holder
MUR
Orange
Programmable
Activated ‘make up room’ flag
ASSIS-
TANCE
Blue
Programmable
Activated ‘assistance’ flag
DND
Red
Programmable
Activated ‘do not disturb’ flag’
