Flow-tronic Raven-Eye, Руководство по установке и эксплуатации, Страница: 25 / 34

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23 -
3.3 Electrical connections
DANGER
Electrocution hazard. Always disconnect power to the instrument when making any electrical
connections.
DANGER
Potential confined space hazards. If conduit is installed from the RAVEN-EYE
®
to the PLC or
controller, the conduit must be sealed to keep sewer gases out of the electronics of the PLC or
controller.
When making any wiring connections to the instrument, the following warnings and notes must be adhered to, as
well as any warnings and notes found throughout the individual installation sections. For more safety information
refer to section 2.1 on page - 5 -.
3.3.1 Electrostatic Discharge (ESD) considerations
Important Note: To minimize hazards and ESD risks, maintenance procedures not requiring power
to the analyzer should be performed with power disconnected.
Delicate internal electronic components can be damaged by static electricity, resulting in degraded instrument
performance or eventual failure.
The manufacturer recommends taking the following steps to prevent ESD damage to your instrument:
•
Before touching any instrument electronic components (such as printed circuit cards and the components
on them) discharge static electricity from your body. This can be accomplished by touching an earth-
grounded metal surface such as the chassis of an instrument or a metal conduit or pipe.
•
To reduce static build-up, avoid excessive movement. Transport static-sensitive components in anti-static
containers or packaging.
•
To discharge static electricity from your body and keep it discharged, wear a wrist strap connected by a
wire to earth ground.
•
Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor and work
bench pads.
3.3.2 Wiring
Connect the cable from the RAVEN-EYE
®
sensor to the PLC or controller. The following connections are used for
the RAVEN-EYE
®
sensor:
Colour Properties Description
White A+ RS485
Black B- RS485
Orange +24 VDC 4-20 mA
Violet mA Output (-) 4-20 mA
Red +4.1 to 24 VDC Power supply
Green Negative wire Power supply
Shield Shield
Table 1: RAVEN-EYE
®
connections
Green/Yellow