Wiring Requirements - Software House iSTAR Ultra Hardware Installation

Wiring Requirements

NOTE
Signal
RS-485 Comm, Data
Half-duplex 2 wire
RS-485 Power
RJ45-Ethernet
Supervised Input
Request-to-exit
(REX or RTE)
Door State Monitor
(DSM)
Supervised Input (UL)
a
Note
Reader Data (Direct
Wiegand Connection)
a. To comply with UL requirements, use shielded, minimum 22 AWG stranded, twisted pair cable for monitor
points, DSMs, and REXs. Use Belden 9462 or equivalent.
b. Check wire lengths to verify that voltage drops are acceptable.
Calculations are based on a single RM-4 reader with keypad and LCD (250 mA):
Using 22 AWG, distance = 600 ft. (.0165 ohms /ft.)
Using 18 AWG, distance = 1500 ft. (.0065 ohms /ft.)
The iSTAR Ultra Ethernet connections are:
Two GCM Onboard Ethernet ports – support 1 Gbps each

Use shielded Ethernet cabling. CAT5 or better.

The Power Input terminals on the iSTAR Ultra accept conductor size up

to 2mm 2 (12 AWG).
Table 4 on page 11 lists the general wiring requirements for an iSTAR Ultra and
its components.
Table 4. Equipment Wiring Specifications
From To
iSTAR Ultra RM & I/O
Modules
iSTAR Ultra RM & I/O
Modules
iSTAR Ultra Hub, Host
iSTAR Ultra Input
or I8
iSTAR Ultra Switch
or RM-4/4E
module
iSTAR Ultra Contact
or RM-4/4E
module
iSTAR Ultra Input
or I8
iSTAR Proximity/
Ultra or Wiegand
RM-4/4E signaling
module read head
AWG Shield
22 Yes
22/18 Yes
Cat 5 or better Yes
22/18 Yes
22/18 Yes
22/18 Yes
22 Yes
22 Yes
20
18
Max Length
4000 ft.(1212 m)
Range of 600 ft. to 1500 ft.
b
depends on AWG
328 ft. (100 m)
2000 ft. (606 m)
2000 ft.(606 m)
2000 ft.(606 m)
2000 ft.(606 m)
200 ft.(60.96 m)
300 ft. (91.4 m)
500 ft. (152.4 m)
Power
11