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 22 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
OEARTH GROUND
The protective conductor terminal is bonded to conductive
parts of the equipment for safety purposes and must
e
connected to an external protective earthing system.
Each G315C 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
15.425 (391.8)
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
10.283 (261.2)
22X .188
(4.8)
5.142 (130.6)
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.
7.455
The G315C requires a 24 VDC power supply. 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 a Class 2 or SELV rating is to be used. A Class 2
or SELV 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.
(189.4)
11.720
(297.7)
2.485
(63.1)
12.425
(315.6)
14.720 (373.9)
All tolerances ±0.010" (±0.25 mm).
BLOCK DIAGRAM
+
-
24VDC
3
A disconnect device must be provided by the end-user.
POWER
SUPPLY
A
A
A
A
ISOLATED
G
AUXILIARY
ETHERNET
ISOLATED
F
ETHERNET
HOST B
ISOLATED
E
RS232
PORT B
ISOLATED
D
RS485
PORT B
HOST A
ISOLATED
C
RS232
PORT A
PGM PORT
ISOLATED
B
RS485
PORT A
USB DEVICE
PROGRAMMING
ALL NONINCENDIVE CIRCUITS MUST BE WIRED USING
DIVISION 2 WIRING METHODS AS SPECIFIED IN ARTICLE 501-4
(b), 502-4 (b), AND 503-3 (b) OF THE NATIONAL ELECTRICAL
CODE, NFPA 70 FOR INSTALLATION WITHIN THE UNITED
STATES, OR AS SPECIFIED IN SECTION 19-152 OF CANADIAN
ELECTRICAL CODE FOR INSTALLATION IN CANADA.
INSTALLING AND POWERING THE G315C
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