PR102DR Installation Guide Rev.E.doc
2017-09-18
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lines are not required. In most cases communication works with any cable type (standard telephone
cable, shielded or unshielded twisted pair etc.) but the recommended cable is unshielded twisted
pair (U/UTP cat.5). Shielded cables should be limited to installations subject to strong
electromagnetic interferences. The RS485 communication standard used in the RACS 4 system
guarantees proper communication in a distance of up to 1200 meters as well as high resistance to
interferences.
3.6 Communication of controller with peripheral devices
The communication of controller and peripheral devices can be established by means of RACS
CLK/DTA bus. RACS CLK/DTA is the addressable bidirectional communication standard developed
by Roger company. Addresses of all devices connected to CLK and DTA lines must be properly
configured in range of 0..15. Factory default address of peripheral devices can be changed
according to procedures specified in their manuals but in majority of cases it is not necessary to
modify the addresses at all. Standard unshielded signal cables (e.g. U/UTP cat. 5) with maximal
length of 150m can be used for RACS CLK/DTA communication. Practically, devices communicating
on RACS CLK/DTA bus can be connected to the controller in distance up to 500m, but such
conditions are not guaranteed by the manufacturer.
PR102DR controller can operate with two PRT series readers, XM-2 I/O expander, up to four XM-8
expanders dedicated to access control in elevators and HRT82FK function key panel. Addresses of
PRT readers must be ID=0 and ID=1, the address of XM-2 expander must be ID=5, addresses of
XM-8 expanders must be in range of ID=8..11 and the address of HRT82FK must be ID=12. All
mentioned devices must be connected to CLK and DTA lines of the controller.
3.7 Input and output lines
Functions are assigned to inputs and outputs by means of PR Master software. Default function for
REL1 relay output is door unlocking.
3.7.1 Inputs
All inputs (IN1, IN2) of controllers have identical electric structure and can be configured as NO or
NC lines using PR Master software. The NO input is triggered by shorting it to supply minus (GND)
while the NC input must be normally shorted to supply minus (GND) and it becomes triggered when
connection with GND is interrupted. Every input is internally connected (pulled up) to the power
supply plus (+12V) through a 15kΩ resistor.
3.7.2 Relay output
Controllers offer one relay output (REL1) with single switching contact. Maximum load for REL1
equals to 30V/1.5A. In the normal state (relay is off) the NC-COM contacts are shorted. In the
triggering state (relay is on) the NO-COM contacts are shorted. In case of power outage both relays
remain in the off state.
3.7.3 General purpose output
Controllers offer single transistor output (OUT1). The output is open collector type i.e. in normal
(off) state is pulled to supply plus via 15kΩ resistor and when in trigger (on) state it shorts to
supply minus. Maximum load for the output equals to 15VDC/1A. In case of overcurrent outputs are
automatically switched off and controller automatically restarts.
3.8 Installation guidelines
Install devices in such way as to ensure easy access to screw terminals, addressing jumpers,
RST button and FDM jumper of the controller.
Prior to controller installation it is recommended to configure its address (ID number) – see 4.1
Controller address
The controller is delivered with MASTER proximity card, however any proximity card in EM
125kHz (UNIQUE) standard can be programmed as MASTER card.
All electric connections must be made with power supply switched off.
All devices connected to the same communication bus (RS485 and RACS CLK/DTA) should be
connected to the same negative potential (GND). Therefore all GND terminals from various
power supply units used in the system should be connected with each other.
