RDU Mk2 Installation & Programming Manual
Document No: LT0499
System Specifications
Page 3-8
8 April 2015
Issue 1.02
Ancillary 3 Supervision
Input Termination
Output terminals BELLS +, -
Form
Reverse polarity
Requires series diode at each device
Resistor EOL
1, 2 or 3 circuits
End of Line
No. of
Circuits
Type
1
3k3, 5%, 250mW resistor
2
6k8, 5%, 250mW resistor
3
10k, 5%, 250mW resistor
Supervision Current
0mA @ +5V
1.5mA @ 0V
+ve to BELLS- terminal
Circuit Resistance
100 Ohm max.
3.4.1.2
CONTROLLER/DISPLAY INPUTS
Spare DC Input/Output
24Vdc nom
4 Way demountable screw terminal, J5
Spare Input
22V, 10k Ohm pull up resistor
Provision for supervision (up to 5 band)
Serial I/O
RDU Comms & Power Termination to TX, RX, 0V, +24V demountable
screw terminal connector J11.
3.4.1.3
NZ MODE DISPLAY EXTENDER BOARD INPUTS
The Display Extender Board is used with New Zealand operation only. The inputs it
provides are : Silence Alarms, Trial Evac, Building Services Restore, Lamp Test and
External Defect. All inputs have closure to zero volts to assert the input. An input may be
left open or unconnected if not used. Refer to section 8.4 for wiring.
All Inputs
Closure below 1.5V @ 0.35mA required to activate.
Open voltage = 5V
3.4.2
FP0559, FP0772, FP0787, FP0788 NON-MAF RDU INPUTS
3.4.2.1
REMOTE TERMINATION BOARD INPUTS
Key switch Input
-
Termination via 4 Way .156" male molex (J7) Routes via J6
FRC header to 5V, 15K Ohm pull up.
RDU Comms
-
Termination to TX, RX, 0V, +24V screw terminals
6 Way connector (J1).