3
i
nStalling
and
p
owering
the
g306
MOUNTING INSTRUCTIONS
This operator interface is designed for through-panel mounting. A panel cut-
out diagram and a template are provided. Care should be taken to remove any
loose material from the mounting cut-out to prevent that material from falling
into the operator interface during installation. A gasket is provided to enable
sealing to NEMA 4X/IP66 specification. Install the ten kep nuts provided and
tighten evenly for uniform gasket compression.
Note: Tightening the kep nuts beyond a maximum of 17 inch-pounds (1.92
N-m) may cause damage to the front panel.
CONNECTING TO EARTH GROUND
Each G306 has a chassis ground terminal on the back of the unit. Your unit
should be connected to earth ground (protective earth).
The chassis ground is not connected to signal common of the unit.
Maintaining isolation between earth ground and signal common is not required
to operate your unit. But, other equipment connected to this unit may require
isolation between signal common and earth ground.
To maintain isolation
between signal common and earth ground care must be taken when connections
are made to the unit.
For example, a power supply with isolation between its
signal common and earth ground must be used. Also, plugging in a USB cable
may connect signal common and earth ground.
1
1.
USB’s shield may be connected to earth ground at the host. USB’s shield in
turn may also be connected to signal common.
POWER SUPPLY REQUIREMENTS
The 24 V G306M (G306M000 & G306MS00) require a 24 VDC power
supply rated at 7.5 W. The 12 V G306M (G306M010 & G306MS10) require a
10 to 16 VDC power supply rated at 8.5 W. Your unit may draw considerably
less than the maximum rated power depending upon the options being used. As
additional features are used your unit will draw increasing amounts of power.
Items that could cause increases in current are additional communications,
optional communications card, CompactFlash card, and other features
programmed through Crimson.
In any case, it is very important that the power supply is mounted correctly if
the unit is to operate reliably. Please take care to observe the following points:
–
The power supply must be mounted close to the unit, with usually not more
than 6 feet (1.8 m) of cable between the supply and the operator interface.
Ideally, the shortest length possible should be used.
–
The wire used to connect the operator interface’s power supply should be
at least 22-gage wire. If a longer cable run is used, a heavier gage wire
should be used. The routing of the cable should be kept away from large
contactors, inverters, and other devices which may generate significant
electrical noise.
–
A power supply with an NEC Class 2 or Limited Power Source (LPS) and
SELV rating is to be used. This type of power supply provides isolation to
accessible circuits from hazardous voltage levels generated by a mains
power supply due to single faults. SELV is an acronym for “safety extra-
low voltage.” Safety extra-low voltage circuits shall exhibit voltages safe
to touch both under normal operating conditions and after a single fault,
such as a breakdown of a layer of basic insulation or after the failure of a
single component has occurred.
2.75
(69.9)
7.63 (193.8)
8.25 (209.6)
5.88
(149.4)
6.50
(165.1)
10X Ø.188 (Ø4.8)
All tolerances ±0.010" (±0.25 mm).
The protective conductor terminal is bonded to conductive
parts of the equipment for safety purposes and must be
connected to an external protective earthing system.
ALL NONINCENDIVE CIRCUITS MUST BE WIRED USING
DIVISION 2 WIRING METHODS AS SPECIFIED IN THE NATIONAL
ELECTRICAL CODE, NFPA 70 FOR INSTALLATION WITHIN THE
UNITED STATES, OR AS SPECIFIED IN THE CANADIAN
ELECTRICAL CODE FOR INSTALLATION IN CANADA.
i
nStalling
a
n
o
ption
c
ard
Each option card comes with a cable for communications and three screws
for ataching the option card to the G306’s rear cover. To install the option card,
remove all power and I/O communications cables from the unit. Use the three
screws provided to mount the option card to the rear cover of the G306 as shown
in Figure 1.
Figure 1
Figure 2
Connect the cable from the option card to CN11 on the main board of the
G306 as shown in Figure 2. Be sure both ends of the cable are firmly seated into
their appropriate connector housing. Carefully replace the rear cover by
reversing the instructions for removing the rear cover.
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT
EQUIPMENT UNLESS POWER HAS BEEN DISCONNECTED
AND THE AREA IS KNOWN TO BE NON-HAZARDOUS.
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT
EQUIPMENT WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA
IS KNOWN TO BE FREE OF IGNITABLE CONCENTRATIONS.
