Specifications

Professional Automation Control System Crestron PAC2
10 • Professional Automation Control System: PAC2 Operations Guide – Doc. 5941A
Connectors, Controls & Indicators (Continued)
# CONNECTORS
1
,
CONTROLS &
INDICATORS
DESCRIPTION
17 NET
(24 VDC 50W)
24 Y
Z G
24VDC 50W
(1) 4-pin 5 mm detachable terminal block;
Cresnet port, Master/Slave selectable’
Expandable via C2N-NPA8 Network Poll
Accelerator (sold separately)
24: Power (24 Vdc)
Y: Data
Z: Data
G: Ground
18 Line Power (1) Attached input power cable, ~1 foot (~305
mm) long, with inline IEC320 socket;
Connects to ac power source using
grounded pigtail cable and DIN rail terminal
block (both included)
19 S1, S2 (2) Y-Bus expansion slots;
Accept all Y-Bus control cards
1. Interface connectors for NET, LEFT/RIGHT, POWER, I/O, OVERRIDE, BACKUP NET
INPUT, FAULT, RELAY OUTPUT and NET (24VDC 50W) ports are provided with the unit.
2. LAN LEDs are active only if a single port or dual port Ethernet card (which is field installed)
occupies the Z-Bus slot.
Built-In Cresnet Hub/Repeater
The built-in Cresnet Hub/Repeater serves as a repeater, splitter and wiring block.
The hub allows for 256 or more devices; 32 per segment (A-H) and distribution up to
3000 feet (~914 meters) per segment.
There are eight independent segments, each with four Cresnet connectors wired in
parallel. Each segment has a dedicated driver/receiver for Cresnet communication. In
addition, there is a master NET port on the front panel. The eight NET (A-H)
activity LEDs illuminate when a device on the respective segment transmits data.
Segments that are not in use or have devices that are not polled by a Crestron
Studio™ (or SIMPL Windows) program are logically “disconnected” from the other
segments in operation. The LEDs for these segments are not illuminated.
CAUTION: Use only Crestron power supplies for Crestron equipment. Failure to
do so could cause equipment damage or void the Crestron warranty.
Power for the hub is supplied through POWER ports 1, 2, 3, and 4, to segment pairs,
as shown in the illustration on the following page. When power is applied, the LED
adjacent to the port is illuminated.