Iomega EP510 User Manual
Page 5
ELECTRICAL CONNECTIONS
PRECAUTIONS TO BE OBSERVED DURING INSTALLATION
These Transducers were tested at the EMC Test Centre, Dunfermline, Fife, KY11 5LB to the Electromagnetic
Compatibility Directive effective January 1, 1996. The relevant EMC specifications tested were the following:
EN 50081-1 (1992) and EN 50082-2 (1992). A Technical Construction File, Serial #107 was written and
Certificate of Conformity issued by a Competent Body.
EN 50081-1 (1992): Test results confirmed that no precautions need to be observed during installation regarding electro-
magnetic emissions from the 510 or 511 Series Transducers.
EN 50082-2 (1992): The following precautions should be taken during installation to maintain the advertised accuracy speci-
fications. The input wiring to the transducer should be isolated from other high voltage transient wiring. The momentary
switching on and off of nearby relays, motors, or other high capacitive or inductive loads can have a minor effect on the
accuracy specification (0.25% of Span). Any change in output pressure is minimal and momentarily, and is considered to be
within the performance capabilities. Use of a ferrite bead collar on the input wires entering the transducer is recommended
should installation next to high electromagnetic interference be necessary.
WARNING: In explosive atmospheres, electrical power must be removed from the transducer before attempting to
remove the cover and until the cover is fully reinstalled. Failure to do so may result in electrical spark or explosion.
CAUTION: Care must be used when inserting wires into the NPT port. Wires must not enter below the circuit board
due to sensitive mechanical components.
DIRECTIONS
1.
Remove the cover (see WARNING above).
2.
Bring wiring to the terminal block, located on the circuit board, through 1/2 NPT electrical conduit connection. 18
A.W.G. is recommended; 14 A.W.G. is the maximum wire size. Connect wires to the terminal block per TABLE 2. Care
must be exercised to prevent damage to delicate internal parts when inserting wiring through the 1/2” NPT conduit
opening.
3.
An internal grounding screw is provided on all units to facilitate separate ground when required. An external grounding
lug is also provided on NEMA 4X enclosures.
4.
Reinstall the cover tightly using all o-rings and locking devices to insure compliance with Agency Approvals.
CALIBRATION
M-4109/1104 IP510, EP510, IP511, EP511 SERIES
A
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TABLE 2: ELECTRICAL CONNECTIONS
TERMINAL BLOCK
I / P TRANSDUCER MODELS
E / P TRANSDUCER MODELS
POSITION # 1
( -- ) NEGATIVE SIGNAL
( + ) POSITIVE SIGNAL
POSITION # 2
NOT USED
COMMON GND FOR SIGNAL
AND SUPPLY
POSITION # 3
( + ) POSITIVE SIGNAL
( + ) POSITIVE SUPPLY
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