Johnson Controls tyco iSTAR Ultra, Installation And Configuration Manual

Page: 27 / 118

Pre-Installation Planning and Requirements
iSTAR Ultra Installation and Configuration Guide 2–3

All preliminary site work is complete.

System power needs to be 12 Vdc. Appropriate circuit breakers must be accessible. Power
supplies must be listed to UL-603 or UL-294.

T
he site is clean and free of dust or other contaminants.

Ensure that the mounting site is ready to accommodate the iSTAR dimensions.
Grounding Requirements
Grounding requirements are as follows:

Ensure that the iSTAR Ultra controller is properly connected to an earth ground at any of
the ground studs.

Ensure that the shield wires are grounded at one end of the cable to the nearest earth/
ground connection. Ground shields of both the GCM and ACMs.

When disconnecting wiring, disconnect ground wires last (to provide maximum
protection to the equipment and personnel.
Wiring Requirements
The iSTAR Ultra Ethernet connections are:

GCM Onboard Ethernet ports - support 1 Gbps each.
Table 2-2 on page 2-3 lists the general wiring requirements for the iSTAR Ultra and its
components.
Disconnect all sourced power before modifying the wiring.
NOTE

Ethernet cabling must be CAT-5E or better.

Use shielded Ethernet cabling in rack mount configurations.

The input terminals on the iSTAR Ultra accept conductor size up to
2mm
2
(12 AWG) .
Table 2-2: Equipment Wiring Specifications
Signal From To
Belden #
or equiv.
AWG
#
Prs
Shield
Max
Length Max. Wire
Resistance
RS-485 Comm,
Data Half-
duplex 2 wire iSTAR
Ultra RM & I/O
Modules 9841 24 1 Yes 4000 ft.
(1212 m) 103

RS-485 Comm,
Power iSTAR
Ultra RM & I/O
Modules 8442/8461 22/18 1 Yes Range of
600 ft. to
1500 ft.
depends on
AWG
See Note
b