Section III – Installation
Table 4. Wiring Checklist
Install Pulse Input Wiring (from Meters and Metered
Injectors)
Install Pulse Outputs Wiring
Install Analog Input Wiring (RTD and 4-20ma)
Install Communications Wiring
Install Digital Input Wiring (DC)
Install Digital Output Wiring (DC)
Install Digital Output Wiring (AC)
Install Earth Ground
Install Instrument Power Wiring
Cable entries must be in accordance to EN/IEC 60079-1
For wiring systems utilizing cable glands the gland
The cable end must be securely installed and depending
on the cable type be properly protected from mechanical
damage.
-
ing device must be used immediately at the entrance
of the enclosure. Any unused entry must be suitably
and IECEx applications. For North American Zone
applications, the plug must be listed 'metal close-up
type.
The maximum ambient temperature for the enclosure
Equipment bonding shall be provided at the external
grounding facility terminal, external connection is not
required when using metallic conduit or armoured
Cover to body fasteners must be either DIN 912 grade
or DIN 912-A2-70 (18-8 stainless steel).
Keypad is protected by an intrinsic safe barrier, the
enclosure must be grounded as per national electrical
code regulations, for example NEC/CEC etc.
Battery back-up option (if equipped) use only approved
AAA NiMH (1.2V/Cell Nominal) rechargeable batteries
meeting IEC 61951-2 requirements, IEC IEC Designa-
a 1 h discharge rate.
Warning: Contains internal battery-powered circuit.
To prevent ignition of hazardous atmospheres, do not open
enclosure unless area is known to be non-hazardous.
To reduce the risk of ignition of hazardous atmospheres,
within 18 inches of the enclosure. Substitution of com-
ponents may impair intrinsic safety. To prevent ignition of
hazardous atmospheres and to prevent electrical shock,
disconnect from supply circuits before opening, keep
tightly closed when circuits are in operation.
Start-Up
instrument power to the unit. The displays should light,
indicating that the microLoad.net is ready for Start-Up.
to match the inputs and outputs to which it has been
connected. The Reference Manual (MN06148) provides
of the inputs to the microLoad.net. Next, apply external
device power and check the operation of output devices.
The microLoad.net is now ready for use. The Operations
Manual (MN06149) describes the procedures used in
the day to day use of the instrument.
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